| Dynamic precipitation and strengthening in a Mg-Zn-Gd alloy during hot deformation | |
| Wang, Weizhen1,2; Zhang, Mengmeng1,2; Yang, Zhuoqun3; Hu, Weiwei1 | |
| Corresponding Author | Wang, Weizhen(wzwang14s@imr.ac.cn) |
| 2022-06-05 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 905Pages:12 |
| Abstract | Dynamic precipitation and microstructural evolution during hot deformation in a Mg-Zn-Gd alloy were investigated through systematic microstructural characterizations. Fast dynamic precipitation of beta'-Mg7Gd rods was activated along dislocations during plastic deformation in Mg97Zn1Gd2 samples annealed at 773 K for 10 h. Transformation of Mg3GdZn to 14H long-period stacking ordered (LPSO) phase increased solute concentration in Mg matrix by ~50% after annealing, which perhaps play an important role in activating dynamic precipitation during subsequent hot deformation, besides assistance of heterogeneous nucleation along dislocations. However, dislocations in cold deformed samples would dissociate upon subsequent annealing at 573 K, producing stacking faults with Suzuki segregation of both Zn and Gd, instead of activating fast precipitation of beta'-Mg7Gd rods. Moving dislocations may attract Gd atoms near their slip planes during hot deformation, which is critical for producing local compositional fluctuation high enough to facilitate dynamic precipitation of beta'-Mg7Gd. Both the formation of H-14 LPSO and dynamic precipitation of beta'-Mg7Gd should play a role in strengthening the Mg97Zn1Gd2 alloy. (C)& nbsp;2022 Elsevier B.V. All rights reserved. |
| Keyword | Dynamic precipitation Dislocation Heterogeneous nucleation Strengthening Mg alloys |
| Funding Organization | National Natural Science Foundation of China ; Basic and Applied Basic Research Major Programme of Guangdong Province, China |
| DOI | 10.1016/j.jallcom.2022.164219 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Natural Science Foundation of China[51971225] ; National Natural Science Foundation of China[52001225] ; National Natural Science Foundation of China[X210141TL210] ; Basic and Applied Basic Research Major Programme of Guangdong Province, China[2021B03010300 03] |
| WOS Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000779143800002 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/172855 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Wang, Weizhen |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Ji Hua Lab, Foshan 528200, Peoples R China 3.Rosedale Acad, Markham, ON L3R 6G2, Canada |
| Recommended Citation GB/T 7714 | Wang, Weizhen,Zhang, Mengmeng,Yang, Zhuoqun,et al. Dynamic precipitation and strengthening in a Mg-Zn-Gd alloy during hot deformation[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,905:12. |
| APA | Wang, Weizhen,Zhang, Mengmeng,Yang, Zhuoqun,&Hu, Weiwei.(2022).Dynamic precipitation and strengthening in a Mg-Zn-Gd alloy during hot deformation.JOURNAL OF ALLOYS AND COMPOUNDS,905,12. |
| MLA | Wang, Weizhen,et al."Dynamic precipitation and strengthening in a Mg-Zn-Gd alloy during hot deformation".JOURNAL OF ALLOYS AND COMPOUNDS 905(2022):12. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment