Journal article

Selective laser melting of Ti-35Nb composite from elemental powder mixture: Microstructure, mechanical behavior and corrosion behavior

JC Wang, YJ Liu, P Qin, SX Liang, TB Sercombe, LC Zhang

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | ELSEVIER SCIENCE SA | Published : 2019

Abstract

The availability of alloyed powder feedstock and chemical inhomogeneity, which often occur when using elemental mixed powder, have been long-term concerns of selective laser melting (SLM) of metallic materials. In this work, a Ti–35Nb alloy (in wt.%) was manufactured using SLM from elemental mixed powder to study the microstructure, mechanical behavior, and corrosion properties of the resultant parts. Microstructural characterizations show that the SLM-produced Ti–35Nb is composed of fine near β phase dendrites and undissolved Nb particles, which produces in a relatively low Young's modulus (84.7 ± 1.2 GPa). The chemical homogeneity and microstructural homogeneity are improved by heat treatm..

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University of Melbourne Researchers

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Funding Acknowledgements

J.O Wang is grateful for the support of the Forrest Research Foundation PhD scholarship. The authors would like to thank Australian Government Research Training Program Scholarship. The authors also acknowledge the facilities, and the scientific and technical assistance of the Australian Microscopy & Microanalysis Research Facility at the Centre for Microscopy, Characterisation & Analysis, The University of Western Australia, a facility funded by the University, State and Commonwealth Governments.