Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatment
Effects of rare-earth (RE) and precipitates on twin evolution in cast Mg-10Gd-3Y-0.5Zr (wt.%) (GW103) alloys of solid solution (T4) and aged (T6) states are investigated performing quasi-static room temperature compression tests and microstructural characterization. It is found that both {10–12} and...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2023-07-01
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| Series: | Journal of Magnesium and Alloys |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956721002899 |
| _version_ | 1797693875032162304 |
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| author | Jingli Li Zhaohui Dong Xin Yi Di Wu Rongshi Chen |
| author_facet | Jingli Li Zhaohui Dong Xin Yi Di Wu Rongshi Chen |
| author_sort | Jingli Li |
| collection | DOAJ |
| description | Effects of rare-earth (RE) and precipitates on twin evolution in cast Mg-10Gd-3Y-0.5Zr (wt.%) (GW103) alloys of solid solution (T4) and aged (T6) states are investigated performing quasi-static room temperature compression tests and microstructural characterization. It is found that both {10–12} and {11–21} extension twins (ET1 and ET2) can appear in the T4 and T6 states but with different emergence sequences. As the aging heat treatment leads to consumption of RE solutes which could inhibit atomic shuffling required for nucleation of ET1 but not ET2, ET2 occurs prior to ET1 in the T4 state, and ET1 emerges before ET2 in the T6 state. The extension twins here mainly coordinate the plastic deformation through the non-Schmid effect. Our results shed light on the influence of RE elements on twin evolution in magnesium alloys and have implications in developing high-performance Mg-RE alloys. |
| first_indexed | 2024-03-12T02:49:54Z |
| format | Article |
| id | doaj.art-14602e7946d543b0be4454c553e59a3a |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-03-12T02:49:54Z |
| publishDate | 2023-07-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-14602e7946d543b0be4454c553e59a3a2023-09-04T04:10:16ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672023-07-0111722852298Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatmentJingli Li0Zhaohui Dong1Xin Yi2Di Wu3Rongshi Chen4Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, ChinaDepartment of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, ChinaDepartment of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, China; Corresponding authors.Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, ChinaShi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China; Corresponding authors.Effects of rare-earth (RE) and precipitates on twin evolution in cast Mg-10Gd-3Y-0.5Zr (wt.%) (GW103) alloys of solid solution (T4) and aged (T6) states are investigated performing quasi-static room temperature compression tests and microstructural characterization. It is found that both {10–12} and {11–21} extension twins (ET1 and ET2) can appear in the T4 and T6 states but with different emergence sequences. As the aging heat treatment leads to consumption of RE solutes which could inhibit atomic shuffling required for nucleation of ET1 but not ET2, ET2 occurs prior to ET1 in the T4 state, and ET1 emerges before ET2 in the T6 state. The extension twins here mainly coordinate the plastic deformation through the non-Schmid effect. Our results shed light on the influence of RE elements on twin evolution in magnesium alloys and have implications in developing high-performance Mg-RE alloys.http://www.sciencedirect.com/science/article/pii/S2213956721002899Mg-Gd-Y-Zr alloysRare-earthPrecipitatesTwinningCompression |
| spellingShingle | Jingli Li Zhaohui Dong Xin Yi Di Wu Rongshi Chen Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatment Journal of Magnesium and Alloys Mg-Gd-Y-Zr alloys Rare-earth Precipitates Twinning Compression |
| title | Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatment |
| title_full | Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatment |
| title_fullStr | Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatment |
| title_full_unstemmed | Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatment |
| title_short | Twin evolution in cast Mg-Gd-Y alloys and its dependence on aging heat treatment |
| title_sort | twin evolution in cast mg gd y alloys and its dependence on aging heat treatment |
| topic | Mg-Gd-Y-Zr alloys Rare-earth Precipitates Twinning Compression |
| url | http://www.sciencedirect.com/science/article/pii/S2213956721002899 |
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