Influence of porosity on the fatigue life of laser powder bed fusion–produced Ti6Al4V

被引：6

作者：

Becker T.H. ^{[1
]}

Dhansay N.M. ^{[1
]}

机构：

[1] Materials Engineering group, Department of Mechanical and Mechatronic Engineering, Stellenbosch University

来源：

Material Design and Processing Communications | 2021年 / 3卷 / 01期

关键词：

additive manufacturing; fatigue life; microstructure; porosity; selective laser melting; Ti6Al4V;

D O I：

10.1002/mdp2.141

中图分类号：

学科分类号：

摘要：

This work explores the fatigue life implications of porosity, microstructure, and the presence of residual stresses of laser powder bed fusion (LPBF)–produced Ti6Al4V. In particular, this study considers stress vs cycles to failure and its link to porosity levels, the underlying microstructure, and the presence of residual stresses. It is shown that both porosity and microstructure play the significant role that adversely affect fatigue life. However, neither play a leading role, and the combination of the two that govern the fatigue life performance of LPBF-produced Ti6Al4V. Residual stresses are shown to have a lesser influence. © 2020 John Wiley & Sons, Ltd.

引用

共 20 条

[1]

Kannan G.B., Rajendran D.K., A review on status of research in metal additive manufacturing, Advances in 3D Printing and Additive Manufacturing Technologies, pp. 95-100, (2016)

[2]

Liu S., Shin Y.C., Additive manufacturing of Ti6Al4V alloy: a review, Mater Des, 164, (2019)

[3]

Frazier W.E., Metal additive manufacturing: a review, J Mater Eng Perform, 23, 6, pp. 1917-1928, (2014)

[4]

Donachie M., Titanium: A Technical Guide, (2000)

[5]

Giannatsis J., Dedoussis V., Additive fabrication technologies applied to medicine and health care: a review, Int J Adv Manuf Technol, 40, 1-2, pp. 116-127, (2009)

[6]

Hao Y.L., Li S.J., Yang R., Biomedical titanium alloys and their additive manufacturing, Rare Metals, 35, 9, pp. 661-671, (2016)

[7]

Ciocca L., Fantini M., De Crescenzio F., Corinaldesi G., Scotti R., Direct metal laser sintering (DMLS) of a customized titanium mesh for prosthetically guided bone regeneration of atrophic maxillary arches, Med Biol Eng Comput, 49, pp. 1347-1352, (2011)

[8]

Knowles C., Becker T., Tait R., Residual stress measurements and structural integrity implications for selective laser melted Ti-6Al-4V, South African J Ind J, 23, pp. 119-129, (2012)

[9]

Liu Y., Yang Y., Wang D., A study on the residual stress during selective laser melting (SLM) of metallic powder, Int J Adv Manuf Technol, 87, 1-4, pp. 647-656, (2016)

[10]

Ter Haar G.M., Becker T.H., Selective laser melting produced Ti-6Al-4V: post-process heat treatments to achieve superior tensile properties, Materials (Basel), 11, 1, (2018)

← 1 2 →