论文类型：期刊论文
第一作者：Kaiwen Wei
通讯作者：Zemin Wang
合写作者：Xiaoyan Zeng
发表刊物：Materials Letters
收录刊物：SCI、EI
卷号：156
页面范围：187-190
发表时间：2015-10-01
影响因子：3.204
摘要：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.