Lanzhou University of Technology Institutional Repository (LUT_IR)
Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression | |
Peng, Z. Z.1; Jin, Q. Q.1; Shao, X. H.1; Zhou, Y. T.1; Zheng, S. J.1; Zhang, B.1; Ma, X. L.1,2 | |
2019-05 | |
发表期刊 | MATERIALS CHARACTERIZATION |
ISSN | 1044-5803 |
卷号 | 151页码:553-562 |
摘要 | The deformation mechanisms and microstructure evolution of Mg88Co5Y7 (at.%) alloy with long period stacking ordered (LPSO) phase during compression at 373-673 K have been studied using transmission electron microscopy. The alloy consists of alpha-Mg matrix, interdendritic LPSO phase, and other Mg-Co-Y intermetallic compounds. Increasing temperature leads to a general decrease in strength of the Mg88Co5Y7 alloy. A large number of {10 (1) over bar2} tension twins and deformation bands are activated in the matrix, whereas basal slip and deformation kink dominate in the LPSO structures during compression at 373 and 473 K. Non-basal slip in matrix and almost no dynamic recrystallization are responsible for high strength and the good ductility of sample deformed at 573 K. Recrystallization of Mg matrix occurs upon deformation at 673 K, dramatically lowering the corresponding strength. Further, the grain boundary pinning effect from LPSO phase, MgYCo4 phase, and broken Mg-3(Co, Y) segments is supposed to account for the relatively high strength of Mg88Co5Y7 alloy at high temperatures. |
关键词 | Magnesium alloy LPSO structure Deformation twin Recrystallization Intermetallics |
DOI | 10.1016/j.matchar.2019.03.049 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | SYNL[2015FP18] ; SYNL[2017FP16] |
WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
WOS类目 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing |
WOS记录号 | WOS:000467668600059 |
出版者 | ELSEVIER SCIENCE INC |
EI入藏号 | 20191406736912 |
EI主题词 | Magnesium alloys |
EI分类号 | 531.1 Metallurgy - 531.2 Metallography - 549.2 Alkaline Earth Metals - 549.3 Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals - 641.1 Thermodynamics - 741.3 Optical Devices and Systems - 802.3 Chemical Operations - 933.1.2 Crystal Growth |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/31909 |
专题 | 兰州理工大学 材料科学与工程学院 |
通讯作者 | Shao, X. H.; Ma, X. L. |
作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China; 2.Lanzhou Univ Technol, Sch Mat Sci & Engn, 287 Langongping Rd, Lanzhou 730050, Gansu, Peoples R China |
通讯作者单位 | 材料科学与工程学院 |
推荐引用方式 GB/T 7714 | Peng, Z. Z.,Jin, Q. Q.,Shao, X. H.,et al. Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression[J]. MATERIALS CHARACTERIZATION,2019,151:553-562. |
APA | Peng, Z. Z..,Jin, Q. Q..,Shao, X. H..,Zhou, Y. T..,Zheng, S. J..,...&Ma, X. L..(2019).Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression.MATERIALS CHARACTERIZATION,151,553-562. |
MLA | Peng, Z. Z.,et al."Effect of temperature on deformation mechanisms of the Mg88Co5Y7 alloy during hot compression".MATERIALS CHARACTERIZATION 151(2019):553-562. |
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