Knowledge Management System Of Institute of metal research,CAS
Enhanced fatigue characteristics of a topology-optimized porous titanium structure produced by selective laser melting | |
Liu, Y. J.; Ren, D. C.; Li, S. J.; Wang, H.; Zhang, L. C.; Sercombe, T. B. | |
2020-03-01 | |
Source Publication | ADDITIVE MANUFACTURING
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Volume | 32 |
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. |
DOI | 10.1016/j.addma.2020.101060 |
WOS ID | WOS:000522928600041 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.imr.ac.cn/handle/321006/83068 |
Collection | 中国科学院金属研究所 |
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. |
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. |
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). |
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