| In-situ investigation on fatigue behaviors of Ti-6Al-4V manufactured by selective laser melting | |
Qian GA(钱桂安) ; Jian,Zhimo; Pan XN(潘向南); Berto,Filippo
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| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE |
| 2020 | |
| Pages | 105424 |
| Conference Name | 19th International Colloquium on Mechanical Fatigue of Metals (ICMFM) |
| Conference Date | SEP 05-07, 2018 |
| Conference Place | Univ Porto, Fac Engn, Porto, PORTUGAL |
| Abstract | In-situ fatigue tests were conducted for exploring the fatigue crack propagation process for Ti-6Al-4V manufactured by selective laser melting (SLM). Fatigue specimens were prepared with two printing orientations by SLM and characterized by scanning electron microscopy (SEM). In-situ fatigue experiments were carried out at 25 degrees C, 200 degrees C, 400 degrees C and 600 degrees C, respectively. Results show that vertically printed specimens have more and larger defects than horizontally printed ones. The fatigue property of horizontally printed specimens is better than that of vertically printed specimens. The anisotropy caused by printing orientation is the reason for the difference in fatigue property. Crack propagation rate increases with temperature. A large number of secondary cracks occurred during the crack propagation at elevated temperature. The branching of secondary cracks releases the energy at the crack tip, and thus slows down the crack growth. |
| Keyword | Selective laser melting In-situ SEM Ti-6Al-4V Low cycle fatigue Crack propagation |
| WOS ID | WOS:000510947500024 |
| Funding Organization | National Natural Science Foundation of China [11872364, 11932020]; CAS Pioneer Hundred Talents Program |
| URL | 查看原文 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/90526 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway |
| Recommended Citation GB/T 7714 | Qian GA,Jian,Zhimo,Pan XN,et al. In-situ investigation on fatigue behaviors of Ti-6Al-4V manufactured by selective laser melting[C]INTERNATIONAL JOURNAL OF FATIGUE,2020:105424. |
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| File Name/Size | DocType | Version | Access | License | ||
| CpA2022F039.pdf（2875KB） | 会议论文 | 开放获取 | CC BY-NC-SA | View Download | ||
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