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Tytuł:
Analysis of the Fracture Surfaces of New Development Insulated Iron Powder Compounds
Autorzy:
Bidulský, R.
Bidulská, J.
Kvačkaj, T.
Actis Grande, M.
Powiązania:
https://bibliotekanauki.pl/articles/1201089.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.-y
81.20.Ev
81.40.Np
Opis:
Goal of the present paper is the analysis of the fracture surfaces of an Insulated Iron Powder Compound (IIPC) with different additions of aluminium alloy (0.25, 0.5 and 0.75 wt.%), in order to improve the mechanical properties, evaluated as the transverse rupture strength (TRS) with sufficient magnetic properties (mainly represented by the iron loss and coercivity force). Investigation of microstructure and porosity development concluded that improvements in bending strength and impact values require the reduction of surface oxides during the heat treatment, in order to get a proper load bearing area between the adjacent particles.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 154-155
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of workability test to SPD processing
Zastosowanie testu obrabialności do intensywnego odkształcenia plastycznego
Autorzy:
Kvačkaj, T.
Kočiško, R.
Tiža, J
Bidulská, J.
Kováčová, A
Bidulský, R
Bascó, J
Vlado, M.
Powiązania:
https://bibliotekanauki.pl/articles/351817.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
compression test
powder metallurgy
fracture criteria
ECAR
Deform 3D
próba ściskania
metalurgia proszków
kryteria pękania
Opis:
The aluminium alloy with chemical conception AlMgSi prepared by PM (powder metallurgy) technology was used. The experiments such as a ring and compression test, ECAR (equal channel angular rolling) for determination of friction coefficient, stress-strain curves and material workability based on analytical methods (Freudenthal, Cockcroft-Latham and normalized Cockcroft-Latham criteria) were performed. Numerical simulations of sample processed by ECAR was carried out by a software Deform 3D with focus on the description of stress, strain fields and workability criteria (Cockcroft-Latham and normalized Cockcroft-Latham). The prediction of fracture formations in a real ECAR sample during processing conditions was also done.
Stop aluminium o składzie chemicznym AlMgSi przygotowano metodą proszkową. Wykonano badania takie jak próba ściskania swobodnego pierścieni i walcowatych, ECAR (wyciskanie w kanale kątowym z walcowaniem) w celu wyznaczenia współczynnika tarcia, krzywych naprężenie-odkształcenie oraz podatności materiału na odkształcenie z użyciem metod analitycznych (kryterium Freudenthal, Cockcroft-Latham i znormalizowane Cockcroft-Latham). Symulacje numeryczne dla próbki poddawanej procesowi ECAR przeprowadzono przy pomocy oprogramowania Deform 3D z naciskiem na opis pól sił i naprężeń oraz kryteriów obrabialności (Cockcroft-Latham i znormalizowane Cockcroft-Latham). Przeprowadzono również symulacje mozliwości tworzenia się pęknięć w rzeczywistej próbce poddanej procesowi ECAR.
Źródło:
Archives of Metallurgy and Materials; 2013, 58, 2; 407-412
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characterization of Microstructural and Mechanical Properties after Cold Rolling of an Electro-Sinter-Forged Cu-Sn Alloy
Autorzy:
Gobber, F. S.
Bidulská, J.
Fais, A.
Franchini, F.
Bidulský, R.
Kvačkaj, T.
Actis Grande, M.
Powiązania:
https://bibliotekanauki.pl/articles/352541.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Electro-Sinter-Forging
powder metallurgy
CuSn15
rolling
Opis:
Traditional press and sinter processes have gained in the last decades more and more importance in the manufacturing of high volume and precise mechanical components especially in the field of iron based powders. In recent years, the reductions of processing times and temperatures were spotted as critical targets to increase productivity and reduce energy consumption. Electric current assisted sintering (ECAS) technologies have always been seen as an alternative to traditional furnace based sintering techniques and have been the target of different researches with the specific purpose of reducing both operational times and costs. The aim of the present study is to investigate the effect of an innovative process called Electro Sinter Forging (ESF) applied to CuSn15 powders. Thanks to a very short processing time (less than 1 second to densify loose powders), this process is able to retain a very small grain size, thus enhancing mechanical properties of the processed materials. Furthermore, to the authors knowledge, cold – rolled electro – sinter – forged alloys has never been investigated before. First of all, bars were electro – sinter – forged and subsequently characterized in the as sinter – forged condition. The observation of microstructure evidenced an extremely fine microstructure and a reduced degree of porosity. Afterwards, bars were cold rolled after different reduction ratios; macrostructural integrity of the rolled bars was assessed before evaluating the effects of cold rolling on the sinter – forged microstructure.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 2; 787-792
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formability Evaluation of Aluminium Alloys by FLD Diagrams
Autorzy:
Petroušek, P.
Kočiško, R.
Kvačkaj, T.
Bidulský, R.
Bidulská, J.
Fedoriková, A.
Sabol, P.
Powiązania:
https://bibliotekanauki.pl/articles/1032922.pdf
Data publikacji:
2017-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.20.Hy
62.10.+s
62.20.M-
81.05.-t
82.80.-d
Opis:
The goal of the present work is evaluated mechanical properties and forming limit diagrams of ambient rolled aluminium alloy based on AlMgSi. Forming limit diagrams are convenient and often used as a tool for the classification of the formability and the evaluation of the forming process of sheet materials. Forming limits of sheet metal are represented in the forming limit diagrams occurring by various deformation states. The most widely used type is the Keeler-Goodwin diagram. Input data got from static tensile test are important for formability evaluating of the thin sheet by mathematical simulations, such as tensile strength, yield strength, elongation, and the strain hardening exponent. The result is a consideration of the suitability of the material for stamping technology.
Źródło:
Acta Physica Polonica A; 2017, 131, 5; 1344-1346
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hot Compression Test of Heat Resistant Steel
Autorzy:
Fedoriková, A.
Kvačkaj, T.
Kočiško, R.
Bidulský, R.
Petroušek, P.
Powiązania:
https://bibliotekanauki.pl/articles/1032933.pdf
Data publikacji:
2017-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.40.Gh
81.40.Np
02.70.Dh
Opis:
This article deals with the analysis of formability of heat resistant steel type 9Cr-1Mo by physical laboratory simulation - hot compression test. The 9Cr-1Mo steel belongs to modern 9%Cr tempered martensitic steel for high-temperature applications in advanced thermal power plants. The shape of the sample was defined based on numerical simulations. The laboratory simulation of forming process called physical simulation - specifically hot compression test was realized in the temperature range from 500 to 950°C and total deformation in the range from 39 to 52%. Cracks formed during hot compression test in the notches are assessed. Subsequently, the relation between the compression temperature, strain, and crack length was defined. The suitable workability corresponds to the temperature range 650-900°C, it agrees with results of numerical simulations. At a temperature of 900°C there is marginal relative deformation without rupture ε =39.9%, which corresponds to the value according to simulations NCL criteria 0.501.
Źródło:
Acta Physica Polonica A; 2017, 131, 5; 1340-1343
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of the critical pore sizes in sintered and ecaped aluminium 6XXX alloy
Przewidywanie powstawania porowatości podczas wyciskania w kanale kątowym stopu aluminium otrzymanego metodą proszkową
Autorzy:
Bidulská, J.
Kvačkaj, T.
Pokorný, I.
Bidulský, R
Actis Grande, M.
Powiązania:
https://bibliotekanauki.pl/articles/353976.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
aluminium alloy
ECAP
porosity
critical pore sizes
microstructure
fracture
stop aluminium
wyciskanie w kanale kątowym
porowatość
mikrostruktura
pękanie
Opis:
The main aim of this paper is to investigate, by means of comparison of experimental studies and mathematical models, the evolution of porosity as consequence of pressing, sintering and ECAPping an aluminium based powder (6xxx). After applying the compacting pressure, specimens were dewaxed in a ventilated furnace at 400º for 60 min. Sintering was carried out in a vacuum furnace at 610ºC for 30 min. The specimens were then ECAPed for 1 pass. The 2-dimensional quantitative image analysis was carried out by means of SEM and OM for the evaluation of the aforementioned characteristics. Results show the effect of processing parameters on the fracture/microstructure behaviour of the studied aluminium PM alloy. Quantitative image analysis, as well as fractographic interpretation and microstructure identification of weak sites in the studied aluminium PM alloy, provide a reliable and reproducible statistical procedure for the identification of the critical pore sizes.
Głównym celem pracy jest badanie zmian porowatości podczas prasowania, spiekania i wyciskania przez kanał katowy proszku na bazie aluminium (Ai-Mg-Si-Cu-Fe) za pomocą eksperymentu i symulacji numerycznych. Po przyłożeniu ciśnienia podczas zagęszczania usuwano lepiszcze z próbek w piecu w temperaturze 400ºC przez 60 minut. Spiekanie prowadzono w piecu próżniowym w temperaturze 610ºC przez 30 min. Próbki następnie były wyciskane przez kanał kątowy w jednym przejściu. Dwuwymiarowa ilościową analizę obrazu przeprowadzono za pomocą skaningowej mikroskopii elektronowej i mikroskopii optycznej w celu oceny wyżej wymienionych właściwości. Wyniki opisują wpływ parametrów procesu na pękanie/ mikrostrukturę badanego proszku stopu aluminium. Ilościowa analiza obrazu, jak równiez mikrostruktury w badanym stopie proszku aluminium zapewniają wiarygodne i statystycznie powtarzalne procedury dla identyfikacji miejsc inicjacji pękania.
Źródło:
Archives of Metallurgy and Materials; 2013, 58, 2; 371-375
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Annealing Conditions on Structural Development of Cryo Rolled FeSi Steel
Autorzy:
Kvackaj, T.
Bidulska, J.
Bidulsky, R.
Kovacova, A.
Kocisko, R.
Bella, P.
Luptak, M.
Bacso, J.
Powiązania:
https://bibliotekanauki.pl/articles/1367991.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Bb
81.05.Bx
81.40.Rs
81.40.Ef
Opis:
Non grain oriented isotropic electrical steels, commercially called NGOES, were investigated in cryogenic temperature conditions. At cryogenic temperatures plastic deformations form strong structural heterogeneities in the sample thickness. Samples processed by cryo rolling show a bigger storage energy. To achieve abnormal grain growth through the process of static recrystallization, the annealing conditions were applied to the deformed samples. Moreover, minimal magnetic losses were reached when mean grain size diameter was approximately 150 μm.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 184-185
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of ECAP-Back Pressure on the Porosity Distribution
Autorzy:
Bidulská, J.
Kvačkaj, T.
Kočiško, R.
Bidulský, R.
Actis Grande, M.
Donič, T.
Martikán, M.
Powiązania:
https://bibliotekanauki.pl/articles/1538174.pdf
Data publikacji:
2010-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.20.Ev
81.40.-z
81.70.Fy
Opis:
The main aim of this paper is to show how back pressure equal channel angular pressing (ECAP-BP) influences the porosity distribution in powder metallurgy (PM) aluminium alloys. When back pressure is applied, the accumulation of damage in deformed samples decreases due to the fact that the shear strain takes place under predominantly compressive stresses. Consequently, ECAP-BP influences the porosity distribution in terms of the severe shear deformation involved. According to the obtained results, interesting applications for this new progressive method in physical and metallurgical research fields are shown.
Źródło:
Acta Physica Polonica A; 2010, 117, 5; 864-868
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Fracture Surfaces of Soft Magnetic Materials
Autorzy:
Bidulská, J.
Kvačkaj, T.
Bidulský, R.
Actis Grande, M.
Ferraris, L.
Powiązania:
https://bibliotekanauki.pl/articles/1533971.pdf
Data publikacji:
2010-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.-y
81.20.Ev
81.40.Np
Opis:
The present paper focused on the analysis of the fracture surfaces of a new development insulated iron powder compound with the addition of the aluminium alloy in order to improve the mechanical properties. Results show that in the pressed state, mainly pores act as crack initiators and due to their presence the distribution of stress is inhomogeneous across the cross-section and leads to the reduction of the effective load bearing area. Investigation of fracture surfaces concluded that improvements in bonding during the pressing process and heat treatment can be helpful in the development of soft magnetic materials to give a suitable combination between pressing pressure, annealing temperature and time as well as magnetic properties.
Źródło:
Acta Physica Polonica A; 2010, 118, 5; 800-801
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Ultrafine-Grained Structure Formation Under Different Strain Rates
Autorzy:
Kováčová, A.
Kvačkaj, T.
Bidulský, R.
Bidulská, J.
Kočiško, R.
Dutkiewicz, J.
Lityńska-Dobrzyńska, L.
Powiązania:
https://bibliotekanauki.pl/articles/353994.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electron microscopy
EBSD
nanostructured materials
equal channel angular processing
grain refinement
Opis:
The present paper deals with a study on formation of specific substructural features in OFHC copper processed by equalchannel angular pressing (ECAP) considering different strain rate conditions. Since two mechanical tensile testing equipments were being used, strain rate response could be studied in a wide range (both in static and dynamic regimes). Moreover, the copper before tensile testing was subjected to drawing and ECAP, separately, which allows to study the influence of both structural and substructural features (CG vs. UFG structure). Considering the static regime, it was found that UFG materials have advanced properties, showing higher strength and ductility in comparison to their CG counterparts. However, this is valid only to the critical value of the strain rate. In the dynamic regime, mathematical linearized results imply that ultimate tensile strength in samples processed by ECAP increases twice every 10 s-1 rising, however, they lost approximately the same plastic properties than samples after drawing. Differences in the progress of mechanical properties are related to specific structural and substructural features evolved in the material during ECAP processing. Above mentioned features were studied in detail by methods of transmission and scanning electron microscopy (TEM, SEM).
Źródło:
Archives of Metallurgy and Materials; 2017, 62, 2A; 851-856
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Material Recovery of OFHC Cu and FeSi Steel after Processing by Plastic Deformations
Autorzy:
Kvackaj, T.
Kocisko, R.
Bidulska, J.
Luptak, M.
Kovacova, A.
Powiązania:
https://bibliotekanauki.pl/articles/1032938.pdf
Data publikacji:
2017-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.82.Bg
07.20.Mc
81.20.Wk
62.20.F-
81.40.Ef
Opis:
The influence of thermoplastic processes through severe plastic deformations carried out at ambient temperature and through rolling carried out at cryogenic temperature on the recovery for two types of materials was investigated. As experimental materials, there were used oxygen free high conductivity copper and FeSi steel presenting materials with middle and high stacking fault energy, respectively. Both materials have been previously investigated, however mainly considering their material properties. In this study, oxygen free high conductivity Cu was processed by 13 passes through equal channel angular rolling which belongs to the severe plastic deformations group of methods. The rolling of FeSi steel at ambient and cryogenic temperatures was performed using a laboratory duo rolling mill, samples were rolled only by one pass. The aim of this study was to insert the strain to the materials with different stacking fault energy (middle and high) under ambient and cryogenic thermal conditions, respectively, and subsequently to observe the influence of stored energy on structural recovery of materials through differential scanning calorimetry method. This study implies that the recovery process characterized by the mobility of structural defects begins earlier for FeSi steel compared to oxygen free high conductivity Cu.
Źródło:
Acta Physica Polonica A; 2017, 131, 5; 1315-1318
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical and Structural Properties of High Purity Al Processed by ECAP
Autorzy:
Kvačkaj, T.
Kočiško, R.
Pokorný, I.
Bidulská, J.
Kvačkaj, M.
Kováčová, A.
Bidulský, R.
Lityńska-Dobrzyńska, L.
Dutkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1418957.pdf
Data publikacji:
2012-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.07.-b
81.20.Hy
81.40.-z
Opis:
The mechanical properties and substructure formation of high purity aluminium (99.999%) processed by severe plastic deformation method (equal channel angular pressing) were studied. The equal channel angular pressing process was carried out at room temperature by route C (sample rotation around the axis about 180° after each pass) in a die with two channels intersecting at an angle of Φp = 90. The softening mechanism through dynamic recovery was recognized up to 6th equal channel angular pressing pass, however, after that the mechanical strengthening was revealed. The samples after equal channel angular pressing processing were annealed in different temperature and time conditions. The influence of annealing temperature and time on microhardness as well as diameter of grain size were investigated in samples processed by the 4th equal channel angular pressing pass.
Źródło:
Acta Physica Polonica A; 2012, 122, 3; 557-560
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Approach In The Properties Evaluation Of Ultrafine-Grained OFHC Copper
Nowe podejście do oceny właściwości ultra drobnoziarnistej miedzi OFHC
Autorzy:
Kvačkaj, T.
Kováčová, A.
Bidulská, J.
Bidulský, R.
Kočičko, R.
Powiązania:
https://bibliotekanauki.pl/articles/958234.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
OFHC copper
UFG
ECAP
strain rate
fractography
wear resistance
miedź OFHC
szybkość odkształcenia
fraktografia
odporność na zużycie
Opis:
In this study, static, dynamic and tribological properties of ultrafine-grained (UFG) oxygen-free high thermal conductivity (OFHC) copper were investigated in detail. In order to evaluate the mechanical behaviour at different strain rates, OFHC copper was tested using two devices resulting in static and dynamic regimes. Moreover, the copper was subjected to two different processing methods, which made possible to study the influence of structure. The study of strain rate and microstructure was focused on progress in the mechanical properties after tensile tests. It was found that the strain rate is an important parameter affecting mechanical properties of copper. The ultimate tensile strength increased with the strain rate increasing and this effect was more visible at high strain rates (έ~102s−1) . However, the reduction of area had a different progress depending on microstructural features of materials (coarse-grained vs. ultrafine-grained structure) and introduced strain rate conditions during plastic deformation (static vs. dynamic regime). The wear behaviour of copper was investigated through pin-on-disk tests. The wear tracks examination showed that the delamination and the mild oxidational wears are the main wear mechanisms.
W pracy zbadano szczegółowo statyczne, dynamiczne i tribologiczne właściwości ultra drobnoziarnistej (UFG) beztlenowej miedzi o wysokiej przewodności cieplnej (OFHC). W celu oceny właściwości mechanicznych przy różnych szybkościach odkształcenia, miedź OFHC badano za pomocą dwóch urządzeń w warunkach statycznych i dynamicznych. Ponadto miedź poddano dwóm różnym sposobom przetwarzania, co umożliwiło badanie wpływu struktury. Badanie szybkości odkształcenia i mikrostruktury koncentrowało się na zmianie właściwości mechanicznych po próbie rozciągania. Stwierdzono, że szybkość odkształcania jest ważnym parametrem wpływającym na właściwości mechaniczne miedzi. Wytrzymałość na rozciąganie wzrosła ze wzrostem szybkości odkształcenia i ten efekt był bardziej widoczny przy dużej szybkości odkształcania (ε~102s−1) . Jednak zmniejszenie obrazu przebiegało inaczej w zależności od cech mikrostruktury materiałów (struktura gruboziarnista a struktura ultra drobnoziarnista) i zadanych warunków szybkości odkształcenia podczas odkształcenia plastycznego (warunki statyczne a warunki dynamiczne). Zużycie miedzi badano za pomocą testów zarysowania. Badanie ścieżek zużycia wykazało, że delaminacja i umiarkowane utlenienie to główne mechanizmy zużycia.
Źródło:
Archives of Metallurgy and Materials; 2015, 60, 2A; 605-614
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Post SPD Materials Recovery in Thermal Exposition
Autorzy:
Kvačkaj, T.
Kováčová, A.
Kočiško, R.
Powiązania:
https://bibliotekanauki.pl/articles/1402127.pdf
Data publikacji:
2015-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.07.-b
81.20.Hy
81.40.Cd
Opis:
The mechanical and thermo-physical properties of Cu-Cr-Zr alloys in dependence on processing conditions were studied. The processing conditions consisted of solution annealing at temperature of 1020°C for 60 min followed by water quenching. This was followed by one equal channel angular pressing pass carried out at ambient temperature, ageing treatment ($T_{AT}$∈ (20;480⟩°C, $t_{AT}$∈ ⟨30;150⟩ min) and cooling in water. The maximal strengthening effect coming from dislocations & grain size refinement & precipitation strengthening of ΔHV0.1=130 was achieved at $T_{AT}$=480°C and for $t_{AT}$=120 min. From differential scanning calorimetry analysis, two partial exothermal peaks were recognized and classified as major and minor, these peaks are used to determination the stored energy coming from recrystallization and precipitation ($\Delta H_R$ and $\Delta H_P$). The maximal value in stored energy of $H_{1 \times \text{ECAP}} = 2.923 J//g$ was obtained after 1st ECAP pass.
Źródło:
Acta Physica Polonica A; 2015, 128, 4; 689-692
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research of fatigue and mechanical properties AlMg1SiCu aluminium alloys
Autorzy:
Mihaliková, M
Lišková, A
Vojtko, M.
Kvačkaj, T.
Powiązania:
https://bibliotekanauki.pl/articles/957961.pdf
Data publikacji:
2015
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
aluminum alloys
mechanical properties
fractography
hardness
equal channel angular pressing (ECAP)
fatigue testing
Opis:
The paper is concerned with an analysis of utility and fatigue properties of industrially produced aluminium alloy, specifically EN AW 6061 (AlMg1SiCu), reinforced with the particles of SiC. The following properties were subject to evaluation: microstructure and sub-structure, mechanical characteristics. All of these mechanical properties in pre- and post- equal channel angular pressed (ECAP) state have been studied. The hardness was evaluated by Vickers hardness test at the load of HV10. The significant part the thesis was devoted to the fatigue properties at cyclic load in torsion. The presented results demonstrate well that the combination of fractography and microscopy can give a significant contribution to the knowledge of initiation and propagation crack in the aluminium alloy.
Źródło:
Advances in Science and Technology. Research Journal; 2015, 9, 28; 56-60
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 20

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