Temat: high resistance steel - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The analysis of properties of platers used for the structural - ballistic safety shields in marine vessels
Autorzy:: Załęska-Fornal, A.
Kyzioł, L.
Powiązania:: https://bibliotekanauki.pl/articles/246690.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ballistics shield
high resistance steel
platters
penetration
perforation
Opis:: Some selected parameters of steel for structural-ballistic shields (OKB) used in the Navy vessels have been presented. The standards for steel to be used for ballistic shields are established by safety standards institutions and committees. There has been made an analysis of steel used for OKB of the vessels. The bullet-proof of the platters has been carried out on the appropriate position. The results of bullet-proof test of selected platters have been presented. The analysis made allowed to select the platters used for the structural-ballistic safety shields in marine vessels and give the direction for further research determined by contemporary threats of both military and terroristic nature. To produce the platters there have been used two types of armoured metal sheet which had been milled to flats made of the basic steel and which can be applied in shipbuilding. The structural-ballistic platters have had the form of flats with the total thickness of 8.5-9.2 mm. The prepared structural-ballistic platters have been technological processed in order to increase the degree of their strength. There have been also presented mechanical and technological properties of platters after heat treatment. The results of the bullet-proof have been presented in graphs form defining the dependence between the hit force and time. The effects of fire of specimen made of platters, by 7.62 mm cal. bullets with the proper speed have been seen on photographs.
Źródło:: Journal of KONES; 2012, 19, 2; 577-583
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The analysis of the parameters of the materials used for antiterrorist safety shields in marine vessels
Autorzy:: Kyzioł, L.
Czapczyk, K.
Powiązania:: https://bibliotekanauki.pl/articles/245513.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: ballistic shields
high resistance steel
dynamic characteristics
analysis
penetration
perforation
Opis:: Selected parameters of steel for constructional ballistic shields used in the Navy vessels have been presented. The standards for steel to be used for ballistic shields are established by safety standards institutions and committees. The analysis has been made upon currently available national and international steel types. The analysis made allowed to select the types of steel with the best parameters to be used for ballistic safety shields in marine vessels and give the direction for further research determined by contemporary threats of both military and terroristic nature. The paper presents inter alia: macroscopic images of a crater filled with the remains of grinded and eroded rifle missile with traces of adiabatic shear in the cut of steel disc, the diagram of a vessel of special purpose equipped with shields made of metal plates the Polish Register of Marine Vessels requirements for mechanical parameters of mild-alloy steel and welded joints of high resistance, the stress - strain diagram for steel 10GHMBA-E620T in speed of movement function, chemical constitution and resistance properties of representative steels used for ballistic shields on American and Japanese naval ships, chemical constitution of selected Swedish steels of high resistance applied for ballistic shields.
Źródło:: Journal of KONES; 2011, 18, 3; 185-192
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Investigations of microstructure of resistance spot-welded joints made of HSLA340 and DP600 steels
Badanie mikrostruktury złączy zgrzewanych punktowo ze stali HSLA340 I DP600
Autorzy:: Ignasiak, A.
Korzeniowski, M.
Ambroziak, A.
Powiązania:: https://bibliotekanauki.pl/articles/356179.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: resistance spot welding
high-strength steel
metallographic examination
Opis:: The paper presents results of metallographic investigations of spot welds made of high-strength steel HSLA340 and dual-phase DP600 steel. Low-carbon martensite microstructure was found in the weld nugget of HSLA steel. The DP600 steel shows martensite and bainite microstructure. For both steels, no carbides of microadditives were found because they dissolved in liquid nugget and could not precipitate again because of rapid heat abstraction. Moreover, no transcrystallisation was found in both steels, which proves good mixing of the materials within the weld.
W artykule opisano wyniki badań metalograficznych zgrzein punktowych wykonanych ze stali o podwyższonej wytrzymałości HSLA340 i dwufazowej stali DP600. Badania wykazały, ze jądro zgrzeiny dla stali HSLA ma mikrostrukture martenzytu niskowęglowego, a dla stali DP600 martenzytu i bainitu. Dla obu gatunków stali w zgrzeinie nie obserwowano węglików mikrododatków stopowych, gdyż w czasie tworzenia ciekłego jądra zostały one rozpuszczone, a w wyniku szybkiego odprowadzania ciepła do elektrod nie zdołały sie ponownie wydzielić. Ponadto dla obu gatunków stali zaobserwowano brak transkrystalizacji, co świadczy o dobrym wymieszaniu sie materiałów w obrebie zgrzeiny.
Źródło:: Archives of Metallurgy and Materials; 2012, 57, 4; 1081-1086
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Microstructure Evolution and Wear Resistance of Boron-Bearing High Speed Steel Roll
Autorzy:: Cheng, Xiaole
Hou, Jianqiang
Fu, Hanguang
Powiązania:: https://bibliotekanauki.pl/articles/2048775.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: boron-bearing high speed steel rolls
microstructure evolution
modification treatment
wear resistance
Opis:: The microstructure evolution of boron-bearing high speed steel roll materials after casting and tempering was investigated. The results indicate that as-cast boron-bearing high speed steel consists of martensitic matrix, retained austenite and different borocarbides. The as-cast alloy has a hardness above 64 HRC, and the borocarbides distribute along the grain boundaries. After RE-Mg-Ti compound modification treatment, obvious necking and broken network appear in the grain boundaries. The hardness of boron-bearing high speed steel roll materials reduces gradually with the increase of tempering temperature. Under the same conditions, the toughness of the modified roll material is higher than that of the unmodified roll material. Wear tests show that the wear resistance of boron-bearing high-speed steel modified by RE-Mg-Ti compound modification treatment is better.
Źródło:: Archives of Metallurgy and Materials; 2022, 67, 1; 113-119
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Development of wear-resistant coatings for automotive parts after processing in SHS conditions
Autorzy:: Sereda, Borys
Kruglyak, Irina
Sereda, Dmytro
Gaydaenko, Alex
Kruglyak, Dmytro
Powiązania:: https://bibliotekanauki.pl/articles/2141006.pdf
Data publikacji:: 2019
Wydawca:: Fundacja Centrum Badań Socjologicznych
Tematy:: automotive parts
transport
protective coatings
wear resistance
self propagating high-temperature synthesis
steel
Opis:: Methods of obtaining chromium-coated coatings are considered and technology for the formation of boron, silicon and titanium protected layers on steels under conditions of self-propagating high-temperature synthesis is presented. Using the methods of mathematical modeling, when obtaining wear-resistant coatings on machine parts in conditions of self-propagating high-temperature synthesis, optimal compositions of SHS mixtures have been developed. When tested in sliding friction conditions, the best abrasion resistance, among the coatings under consideration, are chromoaluminium-coated coatings. Their wear resistance is 4.8-5 times higher than in uncoated samples, chromoaluminosilicated and chromoalumotated in 2.1-3.5. The gas-transport method of coating with the help of SHS makes it possible to obtain steel 50 and U8A with increased physical and mechanical properties, without requiring high energy costs and time.
Źródło:: Journal of Sustainable Development of Transport and Logistics; 2019, 4, 1; 25-30
2520-2979
Pojawia się w:: Journal of Sustainable Development of Transport and Logistics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Evaluation of Microstructure and Tribological Properties of GX120Mn13 and GX120MnCr18-2 Cast Steels
Autorzy:: Kalandyk, B.
Zapała, R.
Kasińska, J.
Madej, M.
Powiązania:: https://bibliotekanauki.pl/articles/2079812.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: high manganese cast steel
microstructure
hardness
wear resistance
staliwo wysokomanganowe
mikrostruktura
twardość
odporność na zużycie
Opis:: The results of microstructure examinations and hardness measurements carried out on two selected grades of high-manganese cast steel with an austenitic matrix, i.e. GX120Mn13 and GX120MnCr18-2, are presented. The examinations of the cast steel microstructure have revealed that the matrix of the GX120MnCr18-2 cast steel contains the precipitates of complex carbides enriched in Cr and Mn with two different morphologies. The presence of these precipitates leads to an increase in hardness by approx. 30 HB compared to the GX120Mn13 cast steel. Samples cut out from the tested materials were loaded (10 strokes) with an energy of 53 J, and then a ball-on-disc tribological test was performed. The test was carried out in reciprocating motion under technically dry friction conditions. While analyzing the obtained results of the microstructure, hardness, and abrasion tests, it was found that the presence of the hard carbide precipitates in the plastic matrix of the tested GX120MnCr18-2 cast steel promoted an increase in hardness, but also led to chipping of these particles from the alloy matrix, thus contributing to micro-cutting during friction.
Źródło:: Archives of Foundry Engineering; 2021, 21, 4; 67-76
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Badania zużycia ściernego nanostrukturalnej stali bainitycznej
Investigation of wear resistance of nanostructured bainitic steel
Autorzy:: Walnik, B.
Marcisz, J.
Iwaniak, A.
Wieczorek, J.
Powiązania:: https://bibliotekanauki.pl/articles/181600.pdf
Data publikacji:: 2017
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Metalurgii Żelaza im. Stanisława Staszica
Tematy:: odporność na zużycie ścierne
nanostrukturalna stal bainityczna
testy tribologiczne
stal wysokowytrzymała
stal trudnościeralna
wear resistance
nanostructured bainitic steel
tribological tests
high-strength steel
wear-resistant steel
Opis:: W artykule przedstawiono wyniki badań porównawczych odporności na zużycie ścierne nanostrukturalnej stali bainitycznej NANOS-BA® i komercyjnej stali trudnościeralnej. Opracowano metodykę przygotowania próbek z wysokowytrzymałej stali do testów w warunkach suchego tarcia posuwistego. Dla wytypowanego wariantu obróbki cieplnej stali nanostrukturalnej uzyskano istotnie wyższą odporność na zużycie ścierne w porównaniu do stali komercyjnej. Wyniki pomiarów wykazały ok. 3-krotnie wyższą odporność na zużycie ścierne stali NANOS BA® w porównaniu do stali trudnościeralnej o twardości 600 HB i ok. 15-krotnie wyższą w porównaniu do stali trudnościeralnej o twardości 500 HB.
The article presents the results of a comparative examination of abrasive wear resistance of nanostructured bainitic steel (NANOS-BA®) and commercial wear resistant steel. A method of sample preparation for high-strength NANOSBA ® steel was developed for dry sliding friction tests. Examination results for the newly developed variant of heat treatment of nanostructured bainitic steel show a higher abrasive resistance than in the case of commercial wearresistant steels. Measurement results show an approx. 3 times higher resistance for the NANOS-BA® steel than the 600 HB wear-resistant steel and approx. 15 times higher than the 500 HB steel.
Źródło:: Prace Instytutu Metalurgii Żelaza; 2017, T. 69, nr 3, 3; 55-60
0137-9941
Pojawia się w:: Prace Instytutu Metalurgii Żelaza
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Stop na bazie Fe-Al - aspekt technologiczny
Technological aspects of alloys based on the Fe-Al system
Autorzy:: Jaśkowiec, K.
Uhl, W.
Powiązania:: https://bibliotekanauki.pl/articles/391686.pdf
Data publikacji:: 2012
Wydawca:: Sieć Badawcza Łukasiewicz - Instytut Odlewnictwa
Tematy:: FAP
staliwo wysokoaluminiowe
Fe-Al
straty aluminium
twardość
udarność
high-aluminium cast steel
aluminium loss
hardness
impact resistance
Opis:: W artykule opisano wytop staliwa na bazie Fe-Al. Poruszono zagadnienia technologiczne realizacji wytopu, zaczynając od symulacji komputerowej, kończąc na obróbce odlewu. Efektem pracy było uzyskanie odlewów pracujących w wysokiej temperaturze. Oprócz praktycznych uwag skupiono się na opisie sposobów minimalizacji strat Al oraz na metodach uzyskania odlewów pozbawionych wad typowych dla tego typu staliwa lub żeliwa. Zwrócono szczególną uwagę na twardość i udarność stopów na bazie Fe-Al.
Melting of cast steel based on Fe-Al system was described. Problems of technological nature related with the melting process performance, starting with computer simulation and in the casting treatment ending, were discussed. The outcome of the study was designing and making of castings for high temperature operation. In addition to practical observations, attention was focussed on the development of methods to reduce to minimum the loss of Al and on the methods to make castings without the defects typical for this type of cast iron or cast steel. Another object of discussion was hardness and impact resistance of alloys based on Fe-Al.
Źródło:: Prace Instytutu Odlewnictwa; 2012, 52, 4; 113-126
1899-2439
Pojawia się w:: Prace Instytutu Odlewnictwa
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Effect of High-Frequency Electric Resistance Welding (HF-ERW) Parameters on Metallurgical Transformations and Tensile Properties of API X52 Microalloy Steel Welding Joint
Autorzy:: Sabzi, M.
Kianpour-Barjoie, A.
Ghobeiti-Hasab, M.
Dezfuli, S. M.
Powiązania:: https://bibliotekanauki.pl/articles/353144.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: High Frequency Electric Resistance Welding
HF-ERW
frequency
compression force
Vee angle
mechanical behavior
API X52 microalloyed steel
Opis:: This study investigates the effects of frequency, compression force and Vee angle parameters of High-Frequency Electric Resistance Welding (HF-ERW) process on mechanical properties of API X52 microalloy steel welding joint. Therefore, API X52 microalloy steel sheets having thickness of 8 mm was provided to manufacture pipes with the diameter of 16”. with direct weld seams using the HF-ERW method. During the manufacturing process, frequency values of 150, 200 and 250 kHz, compression forces of 2, 4 and 6 mark and Vee angles of 3°, 5°, and 7° were adopted. After changing the welding parameters, from the welded pipes, tensile and Charpy impact test samples prepared to macroscopically evaluate the weld metal flow and examine the effects of these parameters on mechanical properties of the welded joints. According to the results, it was concluded that frequency of 150 kHz, the compression force of 4 mark and Vee angle of 5° yields best mechanical properties in the HF-ERW joint of API X52 microalloy steel.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 4; 1693-1699
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: The influence of electrolytic-plasma nitriding on the structure and tribological properties of high-speed steels
Wpływ azotowania elektrolityczno-plazmowego na strukturę i własności tribologiczne stali szybkotnących
Autorzy:: Rakhadilov, B.
Kurbanbekov, S.
Miniyazov, A.
Powiązania:: https://bibliotekanauki.pl/articles/188325.pdf
Data publikacji:: 2015
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: electrolytic-plasma nitriding
high-speed steel
phase composition
wear resistance
azotowanie elektrolityczno-plazmowe
stal szybkotnąca
skład fazowy
odporność na zużywanie
Opis:: The effect of the electrolytic-plasma nitriding on a structure and tribological properties of the R9, R6M5 and R18 type high-speed steels (HSS) has been investigated. It is shown that, after this treatment at the temperature of 550°C, a nitrided layer containing the Fe4N monophase nitride (γ'-phase) is formed. This nitrided layer has a high wear resistance with wear intensity reduded to 1/6th of the figure for non-treated samples.
Zbadano wpływ azotowania elektrolityczno-plazmowego na strukturę i własności tribologiczne stali szybkotnących (HSS) typu R9, R6M6 i R18. Wykazano, że po takiej obróbce w temperaturze 550°C tworzona jest warstwa azotowana zawierająca monofazowy azotek Fe4N (faza γ'). Taka warstwa azotków ma wysoką odporność na zużywanie z jego intensywnością zredukowaną do 1/6 wartości dla próbek niepoddanych obróbce.
Źródło:: Tribologia; 2015, 6; 93-104
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Cast High-Manganese Steel – the Effect of Microstructure on Abrasive Wear Behaviour in Miller Test
Autorzy:: Kalandyk, B.
Tęcza, G.
Zapała, R.
Sobula, S.
Powiązania:: https://bibliotekanauki.pl/articles/383241.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: austenite
high-manganese steel
microstructure
abrasive wear resistance
Miller slurry machine test
austenit
stal wysokomanganowa
mikrostruktura
odporność na ścieranie
test Millera
Opis:: The results of the modification of austenitic matrix in cast high-manganese steel containing 11÷19% Mn with additions of Cr, Ni and Ti were discussed. The introduction of carbide-forming alloying elements to this cast steel leads to the formation in matrix of stable complex carbide phases, which effectively increase the abrasive wear resistance in a mixture of SiC and water. The starting material used in tests was a cast Hadfield steel containing 11% Mn and 1.34% C. The results presented in the article show significant improvement in abrasive wear resistance and hardness owing to the structure modification with additions of Cr and Ti.
Źródło:: Archives of Foundry Engineering; 2015, 15, 2; 35-38
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Resistance to Abrasive Wear and Volume Fraction of Carbides in Cast High-manganese Austenitic Steel with Composite Structure
Autorzy:: Tęcza, G.
Głownia, J.
Powiązania:: https://bibliotekanauki.pl/articles/381502.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: resistance to abrasive wear
high-manganese steel
solution treatment
microstructure
vanadium carbide
odporność na zużycie ścierne
stal wysokomanganowa
mikrostruktura
węglik wanadu
Opis:: Cast Hadfield steel is characterised by high abrasion resistance, provided, however, that it is exposed to the effect of dynamic loads. During abrasion without loading, e.g. under the impact of loose sand jet, its wear resistance drops very drastically. To increase the abrasion resistance of this alloy under the conditions where no pressure is acting, primary vanadium carbides are formed in the metallurgical process, to obtain a composite structure after the melt solidification. The primary, very hard, carbides uniformly distributed in the austenitic matrix are reported to double the wear resistance of samples subjected to the effect of a silicon carbide-water mixture.
Źródło:: Archives of Foundry Engineering; 2015, 15, 4; 129-133
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Influence of Pre-Hardened Gx120mn13 Cast Steel on the Tribological Properties under Technically Dry Friction
Wpływ wstępnego utwardzenia staliwa Gx120mn13 na jego właściwości tribologiczne w warunkach tarcia technicznie suchego
Autorzy:: Kalandyk, Barbara
Zapała, Renata
Madej, Monika
Kasińska, Justyna
Piotrowska, Katarzyna
Powiązania:: https://bibliotekanauki.pl/articles/2171805.pdf
Data publikacji:: 2022
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: high manganese cast steel
hardness
wear resistance
ball-on-disc test
staliwo wysokomanganowe
twardość
odporność na zużycie
test ball-on-disc
Opis:: This paper presents the results of tribological tests on high manganese GX120Mn13 cast steel under technically dry friction conditions. The tests were carried out using a TRB3 ball-on-disc tribometer using a 6mm-diameter SiC ball as a counter-sample for a specimen made of GX120Mn13 cast steel containing a localised prehardening area on the test surface with a hardness of approximately 597 HV10 (the non-hardened area had a hardness of approximately 325–364 HV10). During the test, the ball travelled in a 16.68 mm diameter circle and passed through both hardening and non-hardened areas. The resulting erosion marks were assessed using an optical profilometer and scanning microscope tests, which showed that the maximum depth of erosion in the previously hardening area was 0.77 µm and was more than twice as deep as in the non-hardened areas surveyed. In contrast, the area of attrition was twice as small as in the non-hardened area located in the axis of the previously applied load and more than three times smaller, but in the area located on the side of the axis and 8.34 mm away from it. Thus, from the point of view of the abrasion resistance of GX120Mn13 cast steel, the validity of its prior hardening before the operation was confirmed.
W artykule przedstawiono wyniki badań tribologicznych wysokomanganowego staliwa GX120Mn13 w warunkach tarcia technicznie suchego. Badania przeprowadzono przy użyciu tribometru TRB3 typu ball–on– disc stosując jako przeciwpróbkę kulkę z SiC o średnicy 6mm dla próbki wykonanej ze staliwa GX120Mn13 zawierającej na powierzchni badanej lokalny obszar wcześniej umocniony o twardości ok. 597 HV10 (obszar nieumocniony posiadał twardość ok 325–364 HV10). Kulka w czasie testu poruszała się po okręgu o średnicy 16.68 mm i przechodziła zarówno przez obszar umocniony, jak i nieumocniony. Otrzymane ślady wytarcia oceniano za pomocą badań wykonanych na profilometrze optycznym i mikroskopie skaningowym. Na podstawie przeprowadzonych badań wykazano, że w obszarze wcześniej umocnionym maksymalna głębokość wytarcia wynosiła 0.77 µm i była ponad dwukrotnie mniejsza niż w badanych obszarach nieumocnionych. Z kolei pole wytarcia było dwukrotnie mniejsze niż w obszarze nieumocnionym, znajdującym się w osi przyłożonego wcześniej obciążenia i ponad trzykrotnie mniejsze w porównaniu z obszarem znajdującym się z boku osi i oddalonym od niej o 8.34 mm. Tym samym, z punktu widzenia odporności na zużycie ścierne staliwa GX120Mn13, potwierdzono słuszność jego wcześniejszego umocnienia przed eksploatacją.
Źródło:: Tribologia; 2022, 3; 17--24
0208-7774
Pojawia się w:: Tribologia
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Wear resistance of hydrogenated high nitrogen steel at dry and solid state lubricants assistant friction
Autorzy:: Balitskii, O. A.
Kolesnikov, V. O.
Balitskii, A. I.
Powiązania:: https://bibliotekanauki.pl/articles/379381.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:: dry friction
hydrogenated high nitrogen steel
wear resistance
embrittlement
suche tarcie
uwodorniona stal o wysokiej zawartości azotu
odporność na zużycie
kruchość
Opis:: Purpose: This paper is devoted the investigation hydrogen influence on of wear resistance of high nitrogen steel (HNS) at dry and solid state lubricants assistant friction. It has been established that after hydrogenation at 250 N loading the wear rate increased by 2.9 ... 4.1 times. Microhardness of hydrogenated layer was 7.6 ... 8.2 GPa, that is increased after hydrogenation in two times. After adding the (GaSe)xIn1-x compounds to the tribo conjugates by X-ray diffraction analysis it has been established the appearance of new phases which formed during the friction process and detected on the friction surface. Design/methodology/approach: This work presents research results concerning the comparative tests of high nitrogen steels in the circumstances of dry rolling friction. It was conducted the experiments to determine the tribological properties of high-nitrogen steels under rolling friction. The test pieces were manufactured in the form of rollers, and rotated with a linear velocity 2.27 m/s (upper roller), 3.08 m/s (bottom roller). Upper roller is made from HNS was subjected for hydrogenation. Analysis of friction surfaces indicates the complex mechanism of fracture surfaces. The results of the local X-ray analysis and X-ray diffraction analysis has been established the appearance of new phases and elements on the friction surface. Findings: It has been found that the level of wear resistance of the investigated materials under hydrogenation. Compounds realize chemisorption, tribochemical mechanisms of the formation of thin protective (anti-wear, antifriction) layers on metal surfaces. Research limitations/implications: An essential problem is the verification of the results obtained using the standard mechanical tests, computer-based image analysis and other methods. Practical implications: The observed phenomena can be regarded as the basic explanation of reduces the plasticity characteristics after hydrogenation. Applying the (GaSe)xIn1-x compounds as a lubricant will allow the formation of films on friction surfaces that can minimize surface wear, which will contribute to the transition to a wear-free friction mode. The protective film is a barrier to high shear and normal loads, preserving the base metal of the part and providing reduced wear and friction. Originality/value: The value of this work is that conducted experiments permit to determine the tribological properties of high nitrogen steels under rolling friction after hydrogenation. After adding (GaSe)_xIn_1-x compounds to the tribo conjugates after due to X-ray diffraction analysis it has been established the appearance of new phases which formed during the friction process and detected on the friction surface.
Źródło:: Archives of Materials Science and Engineering; 2019, 98, 2; 57-67
1897-2764
Pojawia się w:: Archives of Materials Science and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Effect of high-manganese cast steel strain hardening on the abrasion wear resistance in a mixture of SiC and water
Autorzy:: Kalandyk, B.
Zapała, R.
Powiązania:: https://bibliotekanauki.pl/articles/382258.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: austenite
high-manganese steel
microstructure
abrasive wear resistance
Miller slurry machine test
austenit
stal wysokomanganowa
mikrostruktura
odporność na zużycie ścierne
test Millera
Opis:: The study attempts to determine the impact of the high-manganese cast steel strain hardening on its abrasion wear resistance in a mixture of SiC and water prepared in accordance with ASTM G75. For tests, the high-manganese cast steel containing 10.7, 17.9 and 20.02% Mn was selected. The results of microstructure examinations and abrasion wear resistance tests carried out on the material in non-hardened condition and after strain hardening with a force of 539.55kN were disclosed. Additionally, the surface of samples after a 16-hour cycle of abrasion tests was examined. Moreover, based on the obtained results, the effect of different contents of Mn in cast steel was studied, mainly in terms of its impact on the abrasion wear resistance. The results obtained on the tested materials were compared with the results obtained on the low-alloyed abrasion wear-resistant cast steel L35GSM.
Źródło:: Archives of Foundry Engineering; 2013, 13, 4; 63-66
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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