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Finite element analysis of temperature and residual stress profiles of porous cubic Ti-6Al-4V titanium alloy by electron beam melting
He, Xiaochun; Li, Yang; Bi, Yongjie; Liu, Xiaomei; Zhou, Bing; Zhang, Shangzhou; Li, Shujun
2020-05-01
Source PublicationJOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume44Pages:191-200
AbstractThe temperature and stress profiles of porous cubic Ti-6Al-4V titanium alloy grids by additive manufacturing via electron beam melting (EBM) based on finite element (FE) method were investigated. Three-dimensional FE models were developed to simulate the single-layer and five-layer girds under annular and lateral scanning. The results showed that the molten pool temperature in five-layer girds was higher than that in single-layer grids owing to the larger mass and higher heat capacity. More energies accumulated by the longer scanning time for annular path than lateral path led to the higher temperature and steeper temperature gradient. The thermal stress drastically fluctuated during EBM process and the residual stress decreased with the increase of powder layer where the largest stress appeared at the first layer along the build direction. The stress under lateral scanning was slightly larger but relatively more homogeneous distribution than those under annular scanning. The stress distribution showed anisotropy and the maximum Von Mises stress occurred around the central node. The stress profiles were explained by the temperature fields and grids structure. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
DOI10.1016/j.jmst.2020.01.033
WOS IDWOS:000522863000020
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/82889
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
He, Xiaochun,Li, Yang,Bi, Yongjie,et al. Finite element analysis of temperature and residual stress profiles of porous cubic Ti-6Al-4V titanium alloy by electron beam melting[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2020,44:191-200.
APA He, Xiaochun.,Li, Yang.,Bi, Yongjie.,Liu, Xiaomei.,Zhou, Bing.,...&Li, Shujun.(2020).Finite element analysis of temperature and residual stress profiles of porous cubic Ti-6Al-4V titanium alloy by electron beam melting.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,44,191-200.
MLA He, Xiaochun,et al."Finite element analysis of temperature and residual stress profiles of porous cubic Ti-6Al-4V titanium alloy by electron beam melting".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 44(2020):191-200.
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