Effect of texture on deformation mode in magnesium and AZ61 alloy

• Autorzy: Sułkowski B.

Identyfikatory

DOI

10.7494/mafe.2018.44.2.91

Warianty tytułu

PL

Wpływ tekstury na mechanizmy deformacji magnezu i stopu AZ61

• Języki publikacji: EN

Abstrakty

EN

The effect of the initial texture on the deformation mode and mechanical properties was studied in magnesium and its AZ61 alloy. Both materials had a very similar initial texture. Two cases were investigated: samples with a texture where the basal slip system was blocked, and samples having a texture where the basal slip system was allowed to activate. The samples were deformed by compression at room temperature at a strain rate of 10−3 s−1. It was found that the initial texture had a very strong impact on the deformation mode in magnesium; however, there was no effect of the initial texture on the deformation mode in the case of AZ61. The investigations were compared to simulations of texture evolution using the Taylor model. From the simulations, the Taylor factor and slip system activity were obtained. It was found that, in the case of magnesium, twinning or slip (both basal and non-basal) are the two main deformation modes, while in the case of AZ61, slip is the only main deformation mechanism despite the initial texture. The impact of the initial texture is discussed in more detail in the present study.

PL

W pracy badano wpływ początkowej tekstury na mechanizmy deformacji i właściwości mechaniczne magnezu i stopu magnezu AZ61. Zbadano dwa przypadki: próbki, w których bazalny system poślizgu został zablokowany, oraz próbki, w których bazalny system poślizgu mógł być aktywowany. Próbki odkształcano przez ściskanie w temperaturze pokojowej z prędkością odkształcania 10-3 s-1. Stwierdzono, że początkowa tekstura miała bardzo silny wpływ na sposób deformacji magnezu; jednak w przypadku AZ61 nie zauważono podobnego efektu wpływu początkowej tekstury na właściwości mechaniczne. Badania porównano z symulacjami ewolucji tekstury za pomocą modelu Taylora. Z symulacji uzyskano współczynnik Taylora i aktywności systemów poślizgu. Stwierdzono, że w przypadku magnezu, w zależności od początkowej tekstury, poślizg (zarówno w bazalnym systemie, jak i niebazalnych systemach poślizgu) oraz bliźniakowanie są dwoma głównymi mechanizmami deformacji, natomiast w przypadku AZ61 głównym mechanizmem deformacji, pomimo początkowej tekstury, jest tylko poślizg.

Słowa kluczowe

EN

magnesium; AZ61; deformation; twinning; texture simulation; Taylor factor

PL

magnez; AZ61; deformacja; bliźniakowanie; modelowanie ewolucji tekstury; współczynnik Taylora

• Wydawca: AGH University of Science and Technology Press
• Czasopismo: Metallurgy and Foundry Engineering
• Rocznik: 2018
• Tom: Vol. 44, no. 2
• Strony: 91--100
• Opis fizyczny: Bibliogr. 23 poz., rys., tab., wykr.

Twórcy

autor

Sułkowski B.

• AGH University of Science and Technology, Faculty of Non-Ferrous Metals, Department of Non-Ferrous Metals Engineering, Krakow, Poland

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).