| 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 Author | Liu, Wei(Liuw_tsinghua@163.com) |
| 2020-01-17 | |
| Source Publication | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| ISSN | 1006-7191 |
| Volume | 33Issue:4Pages:12 |
| Abstract | 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. |
| Keyword | Austenitic stainless steel Laser powder bed fusion Tensile properties Fatigue strength |
| Funding Organization | National Magnetic Confinement Fusion Science Program of China ; National Natural Science Foundation of China |
| DOI | 10.1007/s40195-019-00983-3 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Magnetic Confinement Fusion Science Program of China[2014GB117000] ; National Natural Science Foundation of China[U1605243] |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000507788400002 |
| Publisher | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/136777 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Liu, Wei |
| Affiliation | 1.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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