Microstructure evolution, tensile properties and deformation mechanism of Fe-6.5 wt.% Si steel doped with yttrium

doi:10.1016/j.msea.2022.144216

IMR OpenIR

	Microstructure evolution, tensile properties and deformation mechanism of Fe-6.5 wt.% Si steel doped with yttrium
	Li, Haoze 1; Li, Min 2; Cai, Zhihui 1; Ma, Lifeng 1; Ma, Yingche 3
通讯作者	Li, Haoze(lhzqq83@163.com) ; Ma, Yingche(ycma@imr.ac.cn)
	2022-11-24
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	859 页码:14
摘要	Fe-6.5 wt.% Si steels doped with different contents of yttrium were fabricated by vacuum induction melting (VIM), forging, hot rolling and annealing. The microstructure evolution, ordered degree, tensile properties and deformation mechanism were investigated. The results showed that the amount of high-melting precipitates enriched in yttrium increased with the content of yttrium increasing. The solidification, hot rolling and annealing microstructures were refined due to the elevated nucleation rate and the effect of microstructure heredity. The steel containing the highest content of yttrium exhibited the highest tensile ductility and the most developed dimple patterns. Deformation bands appeared in the tensile microstructures at 400 degrees C. Most of the deformation bands in the steels without yttrium and doped with the intermediate content of yttrium possessed the special {112}<111> twinning mis-orientation with the matrix, implying the cooperation of the deformation twinning mechanism. Nevertheless, the smooth stress-strain curves and the absence of the deformation bands indicate the predominance of the dislocation sliding mechanism during the tensile test at 500 degrees C. The present work man-ifested that the doping of yttrium in Fe-6.5 wt.% Si steel could be utilized to raise the intermediate-temperature tensile ductility through purifying the matrix, refining the microstructure and reducing the ordered degree.
关键词	Yttrium Microstructure Ordered phase Tensile property Deformation mechanism
资助者	National Natural Science Foundation of China
DOI	10.1016/j.msea.2022.144216
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China ; [51801221]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000879375900001
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/176606
专题	中国科学院金属研究所
通讯作者	Li, Haoze; Ma, Yingche
作者单位	1.Taiyuan Univ Sci & Technol, Sch Mech Engn, Taiyuan 030024, Peoples R China 2.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Liaoning, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Haoze,Li, Min,Cai, Zhihui,et al. Microstructure evolution, tensile properties and deformation mechanism of Fe-6.5 wt.% Si steel doped with yttrium[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,859:14.
APA	Li, Haoze,Li, Min,Cai, Zhihui,Ma, Lifeng,&Ma, Yingche.(2022).Microstructure evolution, tensile properties and deformation mechanism of Fe-6.5 wt.% Si steel doped with yttrium.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,859,14.
MLA	Li, Haoze,et al."Microstructure evolution, tensile properties and deformation mechanism of Fe-6.5 wt.% Si steel doped with yttrium".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 859(2022):14.