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Effect of Build Direction on Fatigue Performance of L-PBF 316L Stainless Steel
Yu, Chenfan1; Zhong, Yuan2; Zhang, Peng3; Zhang, Zhenjun3; Zhao, Congcong1; Zhang, Zhefeng3; Shen, Zhijian1,2; Liu, Wei1
Corresponding AuthorLiu, Wei(Liuw_tsinghua@163.com)
2020-01-17
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume33Issue:4Pages:12
AbstractThe 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.
KeywordAustenitic stainless steel Laser powder bed fusion Tensile properties Fatigue strength
Funding OrganizationNational Magnetic Confinement Fusion Science Program of China ; National Natural Science Foundation of China
DOI10.1007/s40195-019-00983-3
Indexed BySCI
Language英语
Funding ProjectNational Magnetic Confinement Fusion Science Program of China[2014GB117000] ; National Natural Science Foundation of China[U1605243]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000507788400002
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/136777
Collection中国科学院金属研究所
Corresponding AuthorLiu, Wei
Affiliation1.Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
2.Stockholm Univ, Dept Mat & Environm Chem, Arrhenius Lab, S-10691 Stockholm, Sweden
3.Chinese Acad Sci, Inst Met Res, Lab Fatigue & Fracture Mat, Shenyang 110016, Peoples R China
Recommended Citation
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.
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