Long-period stacking ordered phase kinking, twinning behavior and dynamic recrystallization of Mg-Gd-Y-Zn-Zr alloy under severe shear deformation

doi:10.1016/j.jallcom.2023.173239

IMR OpenIR

	Long-period stacking ordered phase kinking, twinning behavior and dynamic recrystallization of Mg-Gd-Y-Zn-Zr alloy under severe shear deformation
	Zheng, Ce; Chen, Shuaifeng; Cheng, Ming; Zhang, Shihong; Li, Yingju; Yang, Yuansheng
通讯作者	Chen, Shuaifeng(chensf@imr.ac.cn) ; Cheng, Ming(mcheng@imr.ac.cn)
	2024-03-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	976 页码:16
摘要	A novel severe shear specimen with a maximum shear strain of 3 was designed to further clarify kinking and fragment behavior of long period stacking ordered (LPSO) phases, as well as their interaction with twinning behavior and dynamic recrystallization (DRX) behavior under severe shear deformation (SSD). The results indicate that promoted kinking and fragment behavior for LPSO phases is obseved for hihger activation of basal dislocations induced by shear deformation. Besides the known crack causd by LPSO kinking, a new fragment process without kink bands formation is found for block-shaped LPSO phases under SSD, which follows three stages of micro-crack at the interface of LPSO/alpha-Mg matrix, crack and crush. Moreover, the actvition of tension twinning detected at kinked boundaries is reveled to be controlled by the combined effect of LPSO kinking and shear stress state. Specifically, crystal rotation related to LPSO kinking reorient grains to be possbile for twinning, and then high effective Schmid factor (ESF) under shear stress furter prioritise the twining acivaiton. Additionally, orientation dependence of DRX behaviors was weakened due to the particle-stimulated nucleation (PSN) mechanism caused by interdendritic block-shaped LPSO phases, which can accelerate the formation of low angle grain boundaries and DRX grains by activated pyramidal slip systems even at basal grains.
关键词	Mg-Gd-Y-Zn-Zr LPSO kinking Dynamic recrystallization Twinning Severe shear deformation
资助者	National Natural Science Foundation of China ; National Key Research and Devel-opment Program of China ; Applied Basic Research Program Project of Liaoning Province of China ; Key Research and Development Plan of Shanxi Province
DOI	10.1016/j.jallcom.2023.173239
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52105412] ; National Key Research and Devel-opment Program of China[2021YFB3701100] ; Applied Basic Research Program Project of Liaoning Province of China[2023020253-JH2/1016] ; Key Research and Development Plan of Shanxi Province[202102050201005]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001166101000001
出版者	ELSEVIER SCIENCE SA
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/184267
专题	中国科学院金属研究所
通讯作者	Chen, Shuaifeng; Cheng, Ming
作者单位	Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Ce,Chen, Shuaifeng,Cheng, Ming,et al. Long-period stacking ordered phase kinking, twinning behavior and dynamic recrystallization of Mg-Gd-Y-Zn-Zr alloy under severe shear deformation[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2024,976:16.
APA	Zheng, Ce,Chen, Shuaifeng,Cheng, Ming,Zhang, Shihong,Li, Yingju,&Yang, Yuansheng.(2024).Long-period stacking ordered phase kinking, twinning behavior and dynamic recrystallization of Mg-Gd-Y-Zn-Zr alloy under severe shear deformation.JOURNAL OF ALLOYS AND COMPOUNDS,976,16.
MLA	Zheng, Ce,et al."Long-period stacking ordered phase kinking, twinning behavior and dynamic recrystallization of Mg-Gd-Y-Zn-Zr alloy under severe shear deformation".JOURNAL OF ALLOYS AND COMPOUNDS 976(2024):16.