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	Microstructure and Mechanical Properties of In-Situ Laser Additive Manufactured TiN Reinforced Ti6Al4V Matrix Composites Based on Gas-Liquid Reaction
	Zhu Lei1,2; Wu Wenjie1; Fan Shuqian1; Zhang Kaiwang2; Wei Wenhou1
	2022-06-01
摘要	The Ti6Al4V alloys were fabricated by selective laser melting (SLM) technology. The effect of laser energy density (LED) on the relative density, microhardness, compression strength and plasticity of the Ti6Al4V alloys was studied. Effects of N-2 concentration on microstructure and mechanical properties of the Ti6Al4V matrix composites were studied. The results show that the optimum LED processing window for SLM of Ti6Al4V alloys is in the range of 84.8 similar to 163.6 J/mm(3). In the optimum LED window, the TiN reinforced Ti6Al4V matrix composites were fabricated by SLM in different N-2 concentrations ( 3vol%, 10vol% and 30vol%) atmospheres based on gas-liquid reaction. The composite fabricated by SLM in 3vol% N-2 atmosphere exhibits a good combination of high strength and high plasticity. The strengthening and toughening mechanisms were studied.
关键词	selective laser melting titanium matrix composites laser energy density TiN gas-liquid reaction
发表期刊	RARE METAL MATERIALS AND ENGINEERING
ISSN	1002-185X
卷号	51期号:6页码:2151-2160
通讯作者	Wei Wenhou(weiwenhou@cigit.ac.cn)
收录类别	SCI
WOS记录号	WOS:000863156900030
语种	英语