| Enhanced fatigue characteristics of a topology-optimized porous titanium structure produced by selective laser melting | |
| Liu, Y. J.1,2; Ren, D. C.1,4; Li, S. J.1,4; Wang, H.1,4; Zhang, L. C.3; Sercombe, T. B.2 | |
| Corresponding Author | Li, S. J.(shjli@imr.ac.cn) ; Zhang, L. C.(zhang@ecu.edu.au) ; Sercombe, T. B.(tim.sercombe@uwa.edu.au) |
| 2020-03-01 | |
| Source Publication | ADDITIVE MANUFACTURING
 |
| ISSN | 2214-8604 |
| Volume | 32Pages:10 |
| Abstract | The fatigue properties are critical considerations for porous structures, and most of the existing porous materials have unsatisfactory performances due to a lack of structural optimization. This work shows that a topology-optimized structure fabricated by selective laser melting using commercial-purity titanium (CP-Ti) exhibits excellent fatigue properties with an ultra-high normalized fatigue life of similar to 0.65 at 10(6) cycles and at a low density of 1.3 g/cm(3). The main factors affecting fatigue, i.e., material properties and a porous structure were studied. Both the factors can affect the fatigue crack initiation time, thereby affecting the fatigue life. Because of twinning that occurred during the fatigue process, the porous CP-Ti samples exhibit a high plasticity. In addition, the fatigue crack propagation rate is significantly reduced because of the high plasticity of the CP-Ti material and the occurrence of fatigue crack deflection. |
| Keyword | Selective laser melting Titanium alloy Fatigue property Porous structure Twinning |
| Funding Organization | Chinese MoST ; Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; Australian Research Council |
| DOI | 10.1016/j.addma.2020.101060 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | Chinese MoST[2016YFC1102601] ; Chinese MoST[2017YFC1104903] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC031-02] ; National Natural Science Foundation of China[51871220] ; Australian Research Council[DP170104307] |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Manufacturing ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000522928600041 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138449 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Li, S. J.; Zhang, L. C.; Sercombe, T. B. |
| Affiliation | 1.Chinese Acad Sci, Inst Met Res, Titanium Alloy Lab, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Western Australia, Sch Mech & Chem Engn, 35 Stirling Highway, Nedlands, WA 6009, Australia 3.Edith Cowan Univ, Sch Engn, 270 Joondalup Dr, Perth, WA 6027 USA 4.Univ Sci & Technol China, 96 JinZhai Rd, Hefei 230026, Anhui, Peoples R China |
| Recommended Citation GB/T 7714 | Liu, Y. J.,Ren, D. C.,Li, S. J.,et al. Enhanced fatigue characteristics of a topology-optimized porous titanium structure produced by selective laser melting[J]. ADDITIVE MANUFACTURING,2020,32:10. |
| APA | Liu, Y. J.,Ren, D. C.,Li, S. J.,Wang, H.,Zhang, L. C.,&Sercombe, T. B..(2020).Enhanced fatigue characteristics of a topology-optimized porous titanium structure produced by selective laser melting.ADDITIVE MANUFACTURING,32,10. |
| MLA | Liu, Y. J.,et al."Enhanced fatigue characteristics of a topology-optimized porous titanium structure produced by selective laser melting".ADDITIVE MANUFACTURING 32(2020):10. |
| Files in This Item: | There are no files associated with this item. | |||||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment