Indexed by:Journal paper
First Author:Kaiwen Wei
Correspondence Author:Zemin Wang
Co-author:Xiaoyan Zeng
Journal:Materials Letters
Included Journals:SCI、EI
Volume:156
Page Number:187-190
Date of Publication:2015-10-01
Impact Factor:3.204
Abstract:Selective laser melting was used to fabricate Mg-5.2Zn-0.5Zr (ZK60) components and the influence of element vaporization on formability, composition, microstructure, and mechanical performance of the final products was studied. As-built components presented a highest relative density of 94.05%. All products exhibited a higher Mg:Zn ratio and a lower total content of Mg and Zn than the raw material, matching well with the result calculated from Langmuir and Chapman-Enskog models. After SLM processing, the variation in composition induced a refined microstructure with lessened Mg-Zn precipitates. Although the decrease in relative content of reinforcement element Zn could degrade mechanical performance of the as-built sample, the refined microstructure still ensured an ideal microhardness comparable to those of the wrought ZK60. (C) 2015 Elsevier B.V. All rights reserved.