南方科技大学知识苑(SUSTech KC): Microstructural Evolution and Mechanical Behavior of Additively Manufactured 316 L Subjected to Varied Deformation Directions

题名	Microstructural Evolution and Mechanical Behavior of Additively Manufactured 316 L Subjected to Varied Deformation Directions
作者	He, X.; He, B. B.
通讯作者	He, X.; He, B. B.
发表日期	2023-06-01
DOI	10.1007/s12540-023-01478-8
发表期刊	METALS AND MATERIALS INTERNATIONAL 影响因子和分区
ISSN	1598-9623
EISSN	2005-4149
卷号	30 期号:1页码:25-38
摘要	The present work investigates the effect of deformation directions on the microstructure and mechanical properties of 316 L stainless steel processed by additive manufacturing (AM). It is found that crossly rolled AM 316 L after thickness reduction of 10% demonstrates an enhanced density of deformation twins along the different directions and a substantial hardness increment (108.6 HV, similar to 48.5%). The cross rolling process effectively raises the twinning Schmid factors, the fraction of grains in high twinning Schmid factor regions and activates the generation of multiple twinning systems. The deformation twins with multiple twinning systems have a better capacity in storing the dislocations than that with single twinning system during deformation. Thus, the large increment of hardness after small deformation using cross rolling can be ascribed to increased dislocation and twin densities while the elevated dislocation density is also assisted by the presence of multiple deformation twins. The present work suggests that the multiple deformation twinning of austenitic steel with hierarchically heterogeneous microstructure processed by AM can be effectively activated under small deformation of cross rolling, which may be also applicable for other face centered cubic metallic materials with low stacking fault energy.
关键词	Multiple deformation twins Dislocations Cross rolling Additive manufacturing 316L stainless steel
相关链接	[来源记录]
收录类别	SCI ; EI
语种	英语
学校署名	第一 ; 通讯
资助项目	National Natural Science Foundation of China[U52071173] ; Science and Technology Innovation Commission of Shenzhen["JCYJ20210324120209026","KQTD2019092917250571"] ; Major Talent Programs of Guangdong Province[2019QN01C435]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001014120700003
出版者	KOREAN INST METALS MATERIALS
ESI学科分类	MATERIALS SCIENCE
Scopus记录号	2-s2.0-85161973138
来源库	Web of Science
引用统计	被引频次[WOS]：5
成果类型	期刊论文
条目标识符	http://sustech.caswiz.com/handle/2SGJ60CL/549404
专题	工学院_机械与能源工程系
作者单位	Southern Univ Sci & Technol, Dept Mech & Energy Engn, Shenzhen 518055, Peoples R China
第一作者单位	机械与能源工程系
通讯作者单位	机械与能源工程系
第一作者的第一单位	机械与能源工程系
推荐引用方式 GB/T 7714	He, X.,He, B. B.. Microstructural Evolution and Mechanical Behavior of Additively Manufactured 316 L Subjected to Varied Deformation Directions[J]. METALS AND MATERIALS INTERNATIONAL,2023,30(1):25-38.
APA	He, X.,&He, B. B..(2023).Microstructural Evolution and Mechanical Behavior of Additively Manufactured 316 L Subjected to Varied Deformation Directions.METALS AND MATERIALS INTERNATIONAL,30(1),25-38.
MLA	He, X.,et al."Microstructural Evolution and Mechanical Behavior of Additively Manufactured 316 L Subjected to Varied Deformation Directions".METALS AND MATERIALS INTERNATIONAL 30.1(2023):25-38.