Effect of Build Direction on Fatigue Performance of L-PBF 316L Stainless Steel

doi:10.1007/s40195-019-00983-3

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	Effect of Build Direction on Fatigue Performance of L-PBF 316L Stainless Steel
	Yu, Chenfan 2; Zhong, Yuan 1; Zhang, Peng 3; Zhang, Zhenjun 3; Zhao, Congcong 2; Zhang, Zhefeng 3; Shen, Zhijian 1,2; Liu, Wei 2
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2020-01-17
卷号	33 期号:4 页码:12
关键词	Austenitic stainless steel Laser powder bed fusion Tensile properties Fatigue strength
ISSN号	1006-7191
DOI	10.1007/s40195-019-00983-3
通讯作者	Liu, Wei(Liuw_tsinghua@163.com)
英文摘要	The microstructure and fatigue and tensile properties of 316L stainless steel fabricated via laser powder bed fusion (L-PBF) were investigated. Two 316L stainless steel specimens with different loading directions which are either perpendicular to or parallel to building direction were prepared by L-PBF process. The results of X-ray diffraction tomography showed that there was no significant difference in morphology and size/distribution of the defects in the HB and VB samples. Since long axis of columnar grains is generally parallel to the build direction, the fatigue crack encounters more grain boundaries in VB samples under cyclic loading, which led to enhanced fatigue resistance of VB samples compared with HB sample. In contrast to HB sample, the VB sample has a higher fatigue strength due to a higher resistance to localized plastic deformation under cyclic loading. The differences in fatigue properties of L-PBF 316L SS with different build directions were predominantly controlled by solidification microstructures.
资助项目	National Magnetic Confinement Fusion Science Program of China[2014GB117000] ; National Natural Science Foundation of China[U1605243]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000507788400002
资助机构	National Magnetic Confinement Fusion Science Program of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/136776]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Wei
作者单位	1.Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, S-10691 Stockholm, Sweden 2.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Yu, Chenfan,Zhong, Yuan,Zhang, Peng,et al. Effect of Build Direction on Fatigue Performance of L-PBF 316L Stainless Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020,33(4):12.
APA	Yu, Chenfan.,Zhong, Yuan.,Zhang, Peng.,Zhang, Zhenjun.,Zhao, Congcong.,...&Liu, Wei.(2020).Effect of Build Direction on Fatigue Performance of L-PBF 316L Stainless Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,33(4),12.
MLA	Yu, Chenfan,et al."Effect of Build Direction on Fatigue Performance of L-PBF 316L Stainless Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS 33.4(2020):12.