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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
ISSN1044-5803
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
DOI10.1016/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
被引频次:9[WOS]   [WOS记录]     [WOS相关记录]
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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