Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperature
Hot deformation behaviors of WE71 (Mg–7Y-1Nd-0.5Zr) alloy was investigated by plain strain compression tests conducted at temperatures ranging from 350 °C to 500 °C and strain rates varying from 0.01 s-1 to 10 s-1. Results show that the hot deformation of WE71 was accompanied by the precipitation of...
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doaj-c538bc55879841c0b9a6d3c084bbad542020-11-25T03:43:51ZengElsevierProgress in Natural Science: Materials International1002-00712020-08-01304526532Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperatureBangqi Yin0Xiangyi Xue1Bin Tang2Yi Wang3Hongchao Kou4Jinshan Li5State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaCorresponding author. No. 127, Youyi Xilu, Xi'an, Shaanxi, 710072, China.; State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaState Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an, 710072, ChinaHot deformation behaviors of WE71 (Mg–7Y-1Nd-0.5Zr) alloy was investigated by plain strain compression tests conducted at temperatures ranging from 350 °C to 500 °C and strain rates varying from 0.01 s-1 to 10 s-1. Results show that the hot deformation of WE71 was accompanied by the precipitation of rich Zr phase with granular shape and block-shaped phase rich in element Y. When deformed at low temperature and high strain rate, the softening behavior of the alloy was synergically determined by shear bands propagation, adiabatic heating, twinning formation and dynamic recrystallization (DRX). For the conditions of high temperature and high strain rate, DRX was the major softening mechanism while the formation and annihilation of extension twinning resulted in a special flow curve characteristic at the strain of around 0.3. According to the microstructural observations, it can be concluded that the irregular flow curves of WE71 alloy during plain strain compression process are mainly ascribed to shear bands propagation, adiabatic heating, twinning formation and DRX.http://www.sciencedirect.com/science/article/pii/S1002007120304779WE71 alloyHot deformation behaviorDynamic recrystallizationShear bandPlain strain compression |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bangqi Yin Xiangyi Xue Bin Tang Yi Wang Hongchao Kou Jinshan Li |
spellingShingle |
Bangqi Yin Xiangyi Xue Bin Tang Yi Wang Hongchao Kou Jinshan Li Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperature Progress in Natural Science: Materials International WE71 alloy Hot deformation behavior Dynamic recrystallization Shear band Plain strain compression |
author_facet |
Bangqi Yin Xiangyi Xue Bin Tang Yi Wang Hongchao Kou Jinshan Li |
author_sort |
Bangqi Yin |
title |
Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperature |
title_short |
Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperature |
title_full |
Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperature |
title_fullStr |
Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperature |
title_full_unstemmed |
Hot deformation behaviors of WE71 alloy under plain strain compression at elevated temperature |
title_sort |
hot deformation behaviors of we71 alloy under plain strain compression at elevated temperature |
publisher |
Elsevier |
series |
Progress in Natural Science: Materials International |
issn |
1002-0071 |
publishDate |
2020-08-01 |
description |
Hot deformation behaviors of WE71 (Mg–7Y-1Nd-0.5Zr) alloy was investigated by plain strain compression tests conducted at temperatures ranging from 350 °C to 500 °C and strain rates varying from 0.01 s-1 to 10 s-1. Results show that the hot deformation of WE71 was accompanied by the precipitation of rich Zr phase with granular shape and block-shaped phase rich in element Y. When deformed at low temperature and high strain rate, the softening behavior of the alloy was synergically determined by shear bands propagation, adiabatic heating, twinning formation and dynamic recrystallization (DRX). For the conditions of high temperature and high strain rate, DRX was the major softening mechanism while the formation and annihilation of extension twinning resulted in a special flow curve characteristic at the strain of around 0.3. According to the microstructural observations, it can be concluded that the irregular flow curves of WE71 alloy during plain strain compression process are mainly ascribed to shear bands propagation, adiabatic heating, twinning formation and DRX. |
topic |
WE71 alloy Hot deformation behavior Dynamic recrystallization Shear band Plain strain compression |
url |
http://www.sciencedirect.com/science/article/pii/S1002007120304779 |
work_keys_str_mv |
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