Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy

doi:10.1016/j.msea.2019.138361

	Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy
	Gao, Yubi; Ding, Yutian; Chen, Jianjun; Xu, Jiayu; Ma, Yuanjun; Wang, Xingmao
	2019-11-08
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	767
摘要	The study investigated the effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy during hot/cold deformation and subsequent heat treatment. And further the mechanisms of twin formation and strengthening were discussed. The results show that coarse deformed grains had both a strong Brass orientation {110} < 112 > and a high dislocation density as a result of deformation twinning, while fine recrystallized grains had both a weak Cube orientation {001} < 100 > and a low dislocation density which was attributed to recrystallization. Meanwhile, the deformation twins were formed by the motion of partial dislocation during hot or cold plastic deformation, while annealing twins were formed by growth accidents on a migrating grain boundary during dynamic or static recrystallization. The yield strength (ay) and elongation (epsilon(f)) of the as-cast sample (247 MPa and 41.00%) were significantly increased (366 MPa and 60.00%, 361 MPa and 52.88%) via hot/cold deformation and subsequent heat treated. This result indicates that tailoring the twin boundaries via thermo-mechanical processing can significantly improve strength and ductility of Inconel 625 alloy.
关键词	Inconel 625 alloy Deformation twins Annealing twins Twin boundaries strengthening Eelectron backscatter diffraction (EBSD)
DOI	10.1016/j.msea.2019.138361
URL	查看原文
收录类别	SCI ; SCIE
语种	英语
资助项目	National Key Research and Development Program of China[2017YFA0700703] ; National Natural Science Foundation of China[51661019] ; program for Major Projects of Science and Technology in Gansu Province[145RTSA004]
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:000494052200048
出版者	ELSEVIER SCIENCE SA
EI入藏号	20193807456679
EI主题词	Mechanical properties
EI分类号	531.1 Metallurgy - 933.1.2 Crystal Growth - 951 Materials Science
引用统计	被引频次：66[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/56497
专题	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Ding, Yutian
作者单位	Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	省部共建有色金属先进加工与再利用国家重点实验室
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
第一作者的第一单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Gao, Yubi,Ding, Yutian,Chen, Jianjun,et al. Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2019,767.
APA	Gao, Yubi,Ding, Yutian,Chen, Jianjun,Xu, Jiayu,Ma, Yuanjun,&Wang, Xingmao.(2019).Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,767.
MLA	Gao, Yubi,et al."Effect of twin boundaries on the microstructure and mechanical properties of Inconel 625 alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 767(2019).