Effects of processing parameters on microstructure and mechanical property of selective laser melted Ti6Al4V
Effects of processing parameters on microstructure and mechanical property of selective laser melted Ti6Al4V
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DOI：
10.1016/j.matdes.2011.09.051
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发表时间：
2012-03-01
影响因子：
8.4
通讯作者：
Coddet, Christian
中科院分区：
文献类型：
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作者：
Song, Bo;Dong, Shujuan;Coddet, Christian
选择性激光熔化作为一种简便的方法，在本文中被成功地用于制造完美的 Ti6Al4V 零件。基于一系列单轨，首次提出了对应不同熔化机制的加工窗口。并在加工图内使用各种参数对选择性激光熔化 Ti6Al4V 零件的微观结构、粗糙度、致密化和显微硬度进行了研究。研究发现Ti6Al4V零件的显微组织、粗糙度、致密化和显微硬度是加工参数的强函数。使用优选的激光功率110 W和扫描速度0.4 m/s，对应于连续熔化机制，可以通过选择性激光熔化制造具有高显微硬度和光滑表面的优异Ti6Al4V零件。密度如此之高，可以与块体Ti6Al4V合金相媲美。 (C) 2011 Elsevier Ltd. 保留所有权利。
Selective laser melting, as a facile method, was successfully used in this paper to manufacture perfect Ti6Al4V parts. Based on a series of single tracks, the processing windows were firstly proposed, corresponding to different melting mechanisms. And selective laser melted Ti6Al4V parts using various parameters within the processing map were investigated in terms of microstructure, roughness, densification and microhardness. It was found that the microstructure, roughness, densification and microhardness of Ti6Al4V parts were a strong function of processing parameters. An excellent Ti6Al4V part with the high microhardness and the smooth surface can be manufactured by selective laser melting using preferable laser power 110 W and scanning speed 0.4 m/s, corresponding to continuous melting mechanism. The density is so high that it can be comparable to that of bulk Ti6Al4V alloy. (C) 2011 Elsevier Ltd. All rights reserved.