Effect of Annealing Temperature and Strain Rate on Mechanical Property of a Selective Laser Melted 316L Stainless Steel

doi:10.1007/s40195-021-01342-x

	Effect of Annealing Temperature and Strain Rate on Mechanical Property of a Selective Laser Melted 316L Stainless Steel
	Jiang HZ(蒋华臻)2,3; Li ZY(李正阳)2,3; Feng T 1; Wu PY 1; Chen QS(陈启生)2,3; Yao SK(姚少科)2,3; Hou JY(候静宇)2,3
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2021-11-05
页码	17
关键词	Selective laser melting 316L stainless steel Heat treatment Strain hardening behaviors Mechanical property
ISSN号	1006-7191
DOI	10.1007/s40195-021-01342-x
通讯作者	Li, Zheng-Yang(zyli@imech.ac.cn) ; Chen, Qi-Sheng(qschen@imech.ac.cn)
英文摘要	In the present work, 316L stainless steel specimens are fabricated by selective laser melting (SLM) via optimized laser process parameters. The effects of two extrinsic factors, i.e., strain rate and annealing temperature, on the mechanical performance of SLM-processed parts are studied. The two intrinsic factors, namely strain rate sensitivity m and work hardening exponent n, which control the tensile properties of the as-built samples, are quantified. Microstructure characterizations show that cellular structure and crystalline grain exhibit apparently different thermal stability at 873 K. Tensile testing reveals that the yield strength decreases from 584 +/- 16 MPa to 323 +/- 2 MPa, while the elongation to failure increases from (46 +/- 1)% to (65 +/- 2)% when annealing temperature varies from 298 K to 1328 K. The n value increases from 0.13 to 0.33 with the increase in annealing temperature. Due to the presence of fine cellular structures and high relative density achieved in as-printed 316L samples, a strong dependence between tensile yield strength and strain rate is observed. In addition, the strain rate sensitivity of the SLM-produced 316L part (m = 0.017) is much larger than that of conventional coarse-grained part (m = 0.006), whereas the n value increases slightly from 0.097 to 0.14 with increasing strain rate.
分类号	二类/Q1
资助项目	National Natural Science Foundation of China[11772344] ; National Key R&D Program of China[2016YFB1100700]
WOS关键词	RATE SENSITIVITY ; PROCESS PARAMETERS ; HEAT-TREATMENT ; CORROSION BEHAVIOR ; HIGH-STRENGTH ; MICROSTRUCTURE ; DUCTILITY ; POROSITY ; NETWORK ; PARTS
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000714874800002
资助机构	National Natural Science Foundation of China ; National Key R&D Program of China
其他责任者	Li, Zheng-Yang ; Chen, Qi-Sheng
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87963]
专题	力学研究所_国家微重力实验室宽域飞行工程科学与应用中心
作者单位	1.Beijing E Plus 3D Technol Co LTD, Beijing 102299, Peoples R China 2.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China;
推荐引用方式 GB/T 7714	Jiang HZ,Li ZY,Feng T,et al. Effect of Annealing Temperature and Strain Rate on Mechanical Property of a Selective Laser Melted 316L Stainless Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:17.
APA	蒋华臻.,李正阳.,Feng T.,Wu PY.,陈启生.,...&候静宇.(2021).Effect of Annealing Temperature and Strain Rate on Mechanical Property of a Selective Laser Melted 316L Stainless Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,17.
MLA	蒋华臻,et al."Effect of Annealing Temperature and Strain Rate on Mechanical Property of a Selective Laser Melted 316L Stainless Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):17.