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Tytuł:
Influence of starch content on selected properties of hardboard
Autorzy:
Wronka, Anita
Rdest, Adam
Kowaluk, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2200220.pdf
Data publikacji:
2020
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
potato starch
fiberboard
mechanical properties
physical properties
Opis:
Influence of starch content on selected properties of hardboard. The aim of the research was to examine the possibility of producing wet-formed fiberboard using a different content of potato starch. The scope of works included the production of plates in laboratory conditions with 0, 1, 5, 10 and 20% mass content of potato starch and subjecting them to selected physical and mechanical tests. Thanks to the research, it was possible to produce a hard fiberboard hardboard using a mass fraction of starch. The results of the tests confirmed that as the starch content in the panel increases, the value of mechanical properties increases also.
Wpływ udziału skrobi na wybrane właściwości płyt pilśniowych mokroformowanych. Celem badań było określenie możliwości produkcji płyt pilśniowych twardych (mokroformowanych) z wykorzystaniem różnego udziału skrobi ziemniaczanej, jako środka wzmacniającego. Zakres prac obejmował wytworzenie płyt w warunkach laboratoryjnych przy: 0, 1, 5, 10, 20% udziale masowym skrobi ziemniaczanej oraz poddanie ich wybranym próbom fizycznym i mechanicznym. Potwierdzono możliwość wytwarzania płyt pilśniowych twardych z wykorzystaniem skrobi.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2020, 109; 48--52
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Internal Scrap on Mechanical Properties of Selected Cobalt Alloys
Autorzy:
Dęsoł, B.
Zapała, R.
Pałka, P.
Powiązania:
https://bibliotekanauki.pl/articles/106965.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
cobalt alloy
mechanical properties
fracture
scrap
Opis:
This paper presents the results of mechanical tests carried out on two different commercially available cobalt alloys applied in dental prosthetics for the production of frame dentures. The test samples were obtained by the method of investment casting using as a charge pure primary materials and pure primary materials mixed with various additions of process scrap (25, 50, and 75%). The tests showed that the alloys could not reach the mechanical properties reported by the manufacturer in either case. In the case of the alloy without the addition of tantalum, the general conclusion was that both the plastic and strength properties decreased with increasing amounts of the introduced process scrap. The mechanical properties (mainly elongation) of the alloy containing Ta reached the highest values in the samples containing 75% of the process scrap. Examinations of fractures carried out by SEM have revealed their varied character – ductile or transcrystalline. All of the samples tested showed the presence of dendrites and solidification areas, with shrinkage porosity occurring in the internal sample zones.
Źródło:
Journal of Casting & Materials Engineering; 2017, 1, 3; 59-63
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of hardness on mechanical properties of elastomers
Autorzy:
Ochelski, S.
Bogusz, P.
Kiczko, A.
Powiązania:
https://bibliotekanauki.pl/articles/246003.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
experimental research
elastomers
mechanical properties
relative damping coefficient
mechanical loss angle
Opis:
In this paper, elastomers with different hardness factors were examined to evaluate the influence of the hardness on their mechanical properties. The following hardness numbers, measured in Shore A hardness scale, were investigated: 40; 60; 70 and 90°. Basic mechanical tests i.e. axial tension and axial compression have been performed in order to calculate elastic properties and stress values corresponding to the fixed strains: epsilon = 0.2; 0.3 and 0.5. The sigma (epsilon) dependences from the tension and compression tests are nonlinear and have different shapes. The tension plot can be described by a convex parabola, while the compression curve can be approximated by a concave one. dynamic load tests with loading freąuencies 0.01; 0.1; 1.0 and 3,OHz were performed in order to determine the hysteresis loop and to obtain force and displacement dependences in time. From those results the following factors were calculated: relative damping coefficient and mechanical loss angle, as well as their dependence on load frequencies. The influence of hardness on both in-phase and out-of-phase components of normal modulus were investigated. The sensitivity of the examined elastomers to the loading rate was also investigated.
Źródło:
Journal of KONES; 2010, 17, 1; 317-325
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Cu Addition and Austempering Treatment on Mechanical Properties and Microstructure of GGG 50
Autorzy:
Kilinc, B.
Kirtay, S.
Powiązania:
https://bibliotekanauki.pl/articles/1031936.pdf
Data publikacji:
2017-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
austempering
cast iron
mechanical properties
microstructure
Opis:
An investigation was carried out to examine the effect of austempering on the microstructure and mechanical properties of nodular cast iron GGG 50 (DIN EN 1563) alloyed with different amount of copper. Optical, scanning electron microscopy and energy dispersive spectroscopy analyses were performed for microstructural characterization. In addition, hardness and tensile tests were carried out for mechanical properties determination. Specimens were austenitized at 900°C for an hour, then austempered for an hour at 330°C in salt bath and cooled at a room temperature in air. The results indicated that the addition of Cu to GGG 50 encouraged pearlite formation in the matrix structure. In addition, with the austempering heat treatment, the structure was transformed from ferrite + pearlite into ausferrite and retain austenite. Furthermore, for the alloy with 2 wt% Cu addition, it was noted that the graphite nodules diverged from sphericity and Cu was concentrated around the graphite. After austempering, mechanical properties were significantly improved and the highest mechanical properties were found at 1.5 wt% Cu.
Źródło:
Acta Physica Polonica A; 2017, 132, 3; 461-465
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of joining method for mechanical properties of 7020 aluminium alloy joints
Autorzy:
Dudzik, K.
Powiązania:
https://bibliotekanauki.pl/articles/245189.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
friction stir welding (FSW)
aluminium alloys
joints
welding
mechanical properties
shipbuilding
Opis:
The article presents the research results on the mechanical properties of aluminum alloy 7020 and its FSW and MIG welded joints. Welding parameters used for the connection of the sheets made of 7020 alloy were presented. Metallographic analysis showed the correct construction of structural bonded joints. Friction Stir Welding (FSW) – a new technology can be successfully used for butt welding of different types of aluminum alloy sheets. FSW method can be an alternative to traditional arc welding methods, especially MIG, which is the most common method of joining aluminum alloys used in shipbuilding. The research was carried out using a static tensile test in accordance with the requirements of the Polish Standards PN-EN ISO 4136:2011 and PN-EN ISO 6892-1:2010. Flat samples cut perpendicular to the direction of rolling were used. The research was conducted at the temperature of + 20ºC. Friction stir welded joints of 7020 alloy have higher strength properties compared to MIG welded joints. The yield stress of FSW joint is higher by 14.2% compared to MIG welded joint, and at the same level as the native material. Plastic properties of FSW joint are much higher than MIG joint (over 40%). Confirmation of high strength properties of FSW joint is the place of crack - beyond the weld in the native material.
Źródło:
Journal of KONES; 2013, 20, 1; 71-76
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Structural Characteristics on the Mechanical Properties of FDM Printed PLA Material
Autorzy:
Szczepanik, Stefan
Nikiel, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/106997.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
additive manufacturing
polymer and plastics
polylactide
mechanical properties
Opis:
The present study reports on the influence of printing process parameters, architecture, raster, infill orientation and filling on the density, macrostructure, and mechanical properties, including impact resistance, of biodegradable polymer parts fabricated in polylactide (PLA) on a desktop printer. It complements and considers phenomenologically the results of recently published similar studies, including the use of recycled filament. In our study, complex mechanical properties for the samples printed at the same time on a Replicator 2 printer were investigated. Three samples were printed for each test. Full mechanical characteristics (tensile, compression and bend strengths and impact resistance) of the printed PLA material are reported. This is the novelty in comparison to other studies, where the samples test were printed individually or in a series for each test. The shape and thickness of the layered macrostructure, the presence of holes inside the layers, the number of shell perimeters and the fill density all influenced the tensile properties of the printed materials. These results show the possibility of printing with a 0.3, i.e. shorter printing time than 0.1, 0.15 and 0.18 mm layer thicknesses also reported, without significant decrease in mechanical properties. It is interesting to note that the compressive strengths, the yield of 70–80 MPa and a UTS 113–120 MPa for the printed material with a fill density of 94–96% are comparable with those of aluminum.
Źródło:
Journal of Casting & Materials Engineering; 2020, 4, 1; 1-8
2543-9901
Pojawia się w:
Journal of Casting & Materials Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of particleboard resination on their internal bond strength
Autorzy:
Rzyska-Pruchnik, Stella
Kowaluk, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/2154065.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
particleboard
particle
resination
mechanical properties
IB
płyta wiórowa
wió
stopień zaklejenia
właściwości mechaniczne
Opis:
The influence of particleboard resination on their internal bond strength. The aim of the project was to investigate the main mechanical and physical properties of particleboards, especially focused on internal bond, in terms of their resination. For the tests, the particleboards have been produced in laboratory conditions with the following glue content: 7, 10, 15, 30 and 50%. Particular attention was paid for examining the mechanical property – tensile strength perpendicular to surfaces (Internal Bond – IB). In addition, there were investigated modulus of elasticity (MOE), modulus of rupture (MOR) density and density profile. In the light of above mentioned tests, there is no positive effect of improvement of tested parameters when raise resination over 30% when producing particleboards. With the resination increase from 7 to 50% a significant change (densification) of panels’ structure, as well as differences between face and core layers density have been found.
Wpływ stopnia zaklejenia płyt wiórowych na ich wytrzymałość na rozciąganie prostopadłe. Celem badań było określenie związku pomiędzy wybranymi właściwościami mechanicznymi i fizycznymi płyt wiórowych, ze szczególnym uwzględnieniem wytrzymałości na rozciąganie prostopadłe, a ich stopniem zaklejenia. Do badań zostały wytworzone w warunkach laboratoryjnych płyty wiórowe o następujących stopniach zaklejenia: 7, 10, 15, 30 i 50%. Szczególną uwagę zwrócono na zbadanie właściwości mechanicznych – wytrzymałości na rozciąganie prostopadle do powierzchni (Internal Bond – IB). Ponadto zbadano moduł sprężystości (MOE), wytrzymałość na zginanie (MOR) gęstość oraz profil gęstości. W świetle powyższych badań stwierdzono, że nie ma pozytywnego efektu poprawy badanych parametrów przy podniesieniu stopnia zaklejenia wiórów powyżej 30% przy produkcji płyt wiórowych. Wraz ze wzrostem stopnia zaklejenia z 7 do 50% zauważono istotną zmianę (zagęszczenie) struktury płyt, jak również stwierdzono rosnące różnice pomiędzy gęstością warstw zewnętrznych i wewnętrznych badanych płyt.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2021, 115; 55--62
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Flame Retardant and Processing Conditions on Selected Properties of Mouldings Made of ABS
Autorzy:
Trzaskalska, Milena
Powiązania:
https://bibliotekanauki.pl/articles/2174593.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
injection moulding
ABS
PS
TiO2
flame retardant
mechanical properties
Opis:
Thanks to dyeing of polymers, the possibilities of their use are constantly increasing. It is equally important to use additives that will have several functions. A perfect example is titanium dioxide used as an optical brightener and a flame retardant at the same time. Mostly it is used in the form of a powder. However, there are no studies where TiO2 is used as a colourbatch based on the different polymer matrix. The aim of the work was to investigate the effect of titanium white in the form of colourbatch on the flammability and selected properties of mouldings produced in various processing conditions. Colourbatch based on PS matrix, was used in the research. The variable processing parameters were: injection temperature Tw, volume flow rate Vw, residence time and the addition of a colourbatch. On the basis of the measurements, it was found that the processing conditions and the addition of the colourbatch have low effect on the hardness of the mouldings, which was in the range from 75.59° Sh D (Shore type D) to 81.95° Sh D. It was also noted that the addition of colourbatch with TiO2 and increasing injection temperature reduces impact strength even by several dozen percent. Moreover, it was found that use of TiO2 causes a delay in the ignitability of the samples in selected cases. It is difficult to determine whether the variable processing conditions or the addition of TiO2 on the PS matrix have a greater impact on the ignitability of the moulded parts.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 4; 1381-1386
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of expanded graphite coming from the electrochemical oxidation of phenol on cement-polymer matrix
Autorzy:
Ślosarczyk, A.
Krawczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/778970.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
cement-polymer matrix
expanded graphite
surface treatment
adhesion
mechanical properties
Opis:
In presented article the polymer-modified cement mortars with expanded graphite covered by the oligomer film, being a by-product of phenol electro-oxidation, were investigated. The changes in the morphology of EG and EG/oligomer as well as in the microstructure of cement-polymer composites modified with EG/oligomer were verified using the scanning electron microscopy (SEM). The evaluation of adhesion between EG/oligomer and cement-polymer mortar based on the mechanical tests, especially their flexural behavior. It was shown that the oligomer film formed on EG surface made graphite flakes more durable and resistant to bending. Moreover, the oligomer due to the interaction with polymer network in cement-polymer mortar led to the improvement of flexural toughness of composite.
Źródło:
Polish Journal of Chemical Technology; 2016, 18, 4; 5-8
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on the influence of blowing agent on selected properties of extruded cellular products
Autorzy:
Garbacz, T.
Jachowicz, T.
Gajdoš, I.
Kijewski, G
Powiązania:
https://bibliotekanauki.pl/articles/102154.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
thermoplastics polymers
cellular extrusion
blowing agents
mechanical properties
Opis:
As a part of a more comprehensive research project, the present study was undertaken to investigate the effect of the type and content of blowing agents in the polymeric materials being processed on the structure and selected physical and mechanical properties of the obtained extrusion parts. In the experiment, the content of the blowing agent (0–2.0% by mass), fed into the processed polymer were adopted as a variable factor. In the studies presented in the article, the blowing agents of endothermic decomposition characteristics (Hydrocerol BIH 70, Hydrocerol BM 70) and the exothermic decomposition characteristics (PLC 751) occurring in the granulated form with a diameter of 1.2 to 1.8 mm were used. Based on the results of investigating porosity, porous structure image analysis as well as microscopic examination of the structure, it has been found that the favorable content of the blowing agent in the polymeric material should be of up to 0.8% by mass. With such a content of the blowing agent in the polymeric material, favorable strength properties are retained in porous parts, the pore distribution is uniform and the pores have similar sizes.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 81-88
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of apple wood waste from the annual care cut on the mechanical properties of particleboards
Autorzy:
Auriga, Radosław
Borysiuk, Piotr
Smulski, Piotr
Gumowska, Aneta
Powiązania:
https://bibliotekanauki.pl/articles/2200567.pdf
Data publikacji:
2019
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
particleboard
apple wood
waste wood
mechanical properties
Opis:
Influence of apple wood waste from the annual care cut on the mechanical properties of particleboards. As part of the work, the influence of the share of apple wood waste from the annual care cut on the mechanical properties of 3-layer particle boards was examined. Particleboards were prepared using two variants of the specific maximum pressing pressure of 1.5 MPa and 2.5 MPa and mass share of particles from apple wood waste at the level of 0%, 25%, 50% and 75%. The results of the tests show a decrease in the value of the modulus of rapture and modulus of elasticity with the increase of the share of the additive in particleboard. In spite of the decrease of the value of the modulus of rapture and modulus of elasticity, all produced particleboards with the application of specific pressing pressure at the level of 2.5 MPa, met the requirements for P2 type particle board included in the PN 312: 2011 standard.
Wpływ udziału odpadowego drewna jabłoni z rocznego cięcia pielęgnacyjnego na właściwości mechaniczne płyt wiórowych. W ramach pracy zbadano wpływ udziału odpadowego drewna jabłoni pochodzącego z rocznego cięcia pielęgnacyjnego na właściwości mechaniczne 3-warstwowych płyt wiórowych. Wytworzono płyty przy zastosowaniu dwóch wariantów jednostkowego maksymalnego ciśnienia prasowania 1,5 MPa i 2,5MPa i udziale masowym wiórów z odpadowego drewna jabłoni na poziomie 0%, 25%, 50% i 75%. Wyniki przeprowadzonych badań wykazują spadek wartości wytrzymałości na zginanie statyczne oraz modułu sprężystości przy zginaniu statycznym wraz ze wzrostem udziału w płycie odpadowego drewna jabłoni. Mimo spadku wartości wytrzymałości na zginanie statyczne oraz modułu sprężystości przy zginaniu statycznym wszystkie wytworzone płyty wiórowe przy zastosowani jednostkowego ciśnienia prasowania na poziomie 2,5MPa, spełniały wymagania dla płyt wiórowych typu P2 zawarte w normie PN 312:2011.
Źródło:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2019, 105; 47--53
1898-5912
Pojawia się w:
Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Recrystallization Annealing on the Properties and Structure of Low-Carbon Ferritic Steel IF
Autorzy:
Kowalczyk, K.
Jabłońska, M.
Rusz, S.
Junak, G.
Powiązania:
https://bibliotekanauki.pl/articles/355122.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
low-carbon IF steel
annealing
mechanical properties
microstructure
Opis:
This paper shows results of researches of a structure and mechanical properties of metal sheets of IF steels subjected to recrystallization annealing. The annealing was held in the scope of the temperature of 600-900°C over 25 min time. The impact of heat treatment on changes of properties and structure of the researches steel has been analysed. During annealing typical processes of rebuilding of the structure deformed as a result of cold deformation in the form of forming new recrystallized grains and their growth were observed. As the temperature of annealing increases the hardness of the material gradually decreases.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 4; 1957-1961
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of cocamidopropyl betaine on the mechanical and thermal properties of polymer films
Autorzy:
Stachowiak, Natalia
Kowalonek, Jolanta
Kozłowska, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/1844961.pdf
Data publikacji:
2020
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Polskie Towarzystwo Biominerałów
Tematy:
polymers
mechanical properties
thermal properties
polimery
właściwości mechaniczne
właściwości cieplne
Źródło:
Engineering of Biomaterials; 2020, 23, 158 spec. iss.; 56
1429-7248
Pojawia się w:
Engineering of Biomaterials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of the notch for mechanical properties of 7020 aluminium alloy jointed by FSW
Autorzy:
Dudzik, K.
Czechowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/247552.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
aluminium alloys
friction stir welding (FSW)
mechanical properties
slow-strain-rate-testing
Opis:
The article presents the results of the mechanical properties of aluminum alloy AW 7020 [AlZn5Mgl] welded by friction s tir welding FSW. Friction Stir Welding (FSW) - a new technology can be successfully used for butt welding of different types of aluminum alloy sheets. In the article the parameters for friction stir welding of sheets made of AlZn5Mgl [7020] alloy were presented. Analysis of bonds showed a proper structural construction of the FSW welded 7020 aluminum alloy. The test was examined via the slow-strain-rate-testing (SSRT) according to ENISO 7539-7. The following parameters were measured: time-to-failure - T [min], obtained max. load - F [N]; strain energy (the diagram surface under the stress-elongation curve) - E [MJ/m3]; relative elongation of the specimen - A10 [%]; max. tensile stress - R [MPa] and contraction - Z [%]. The tests were carried out on cylindrical notch-free specimens and on specimens with "U"- notch in the air. Despite the use of "U" - notch cut in the joint, the specimens cracked in the native material. On the basis of test results were high strength properties of aluminum alloy 7020joints welded by FSW. Original values are received results of the mechanical properties of new method friction stir welded AW- 7020 [AlZn5Mgl] alloy.
Źródło:
Journal of KONES; 2010, 17, 4; 131-135
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Solution Heat Treatment on Structure and Mechanical Properties of ZnAl22Cu3 Alloy
Autorzy:
Michalik, R.
Chmiela, B.
Powiązania:
https://bibliotekanauki.pl/articles/351554.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heat treatment
mechanical properties
structure
ZnAl22Cu3 alloy
Opis:
The influence of solution heat treatment at 385°C over 10 h with cooling in water on the structure, hardness and strength of the ZnAl22Cu3 eutectoid alloy is presented in the paper. The eutectoid ZnAl22Cu3 alloy is characterized by a dendritic structure. Dendrites are composed of a supersaturated solid solution of Al in Zn. In the interdendritic spaces a eutectoid mixture is present, with an absence of the ε (CuZn4) phase. Solution heat treatment of the ZnAl22Cu3 alloy causes the occurrence of precipitates rich in Zn and Cu, possibly ε phase. Solution heat treatment at 385°C initially causes a significant decrease of the alloy hardness, although longer solution heat treatment causes a significant increase of the hardness as compared to the as-cast alloy.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 3; 1581-1586
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 153

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