黄金鑫,孙中刚,常辉,唱丽丽,邢飞.激光增材制造Ti6Al4V-Inconel718功能梯度材料的成分变化和微观结构演变[J].稀有金属材料与工程,2020,49(8):2813~2819.[Huang Jinxin,Sun Zhonggang,Chang Hui,Chang Lili,Xing Fei.Compositional Changes and Microstructure Evolution of Ti6Al4V-Inconel718 Functionally Graded Materials by Laser Additive Manufacturing[J].Rare Metal Materials and Engineering,2020,49(8):2813~2819.]
激光增材制造Ti6Al4V-Inconel718功能梯度材料的成分变化和微观结构演变
投稿时间:2019-07-19  修订日期:2019-09-16
中文关键词:  激光增材制造  功能梯度材料  Ti6Al4V/Inconel718  成分  微观结构
基金项目:国家自然科学基金资助(项目号51875274)
中文摘要:
      利用激光增材制造技术制备了Ti6Al4V/Inconel718功能梯度材料,研究了该梯度材料的成分及相组成、显微组织和显微硬度的变化。研究表明:沿组成梯度方向发生了一系列相变:α+β→α+β+Ti2Ni→β+TiNi→γ,过渡层主要是由TiNi和Ti2Ni以及Ti-Cr和Ti-Fe等二元相组成的混合体;沿材料底部至顶部微观组织发生了由魏氏α片层组织到细小树枝晶的转变;对沉积结构进行显微硬度测试,发现具有较高Ti2Ni相面积分数的过渡层最硬,本研究发现最大值为823HV。
Compositional Changes and Microstructure Evolution of Ti6Al4V-Inconel718 Functionally Graded Materials by Laser Additive Manufacturing
英文关键词:laser additive manufacturing  functionally graded material  Ti6Al4V/Inconel718  composition  microstructure
英文摘要:
      Ti6Al4V/Inconel718 functionally graded materials were prepared by laser additive manufacturing technology. The composition, phase composition, microstructure and microhardness of the gradient materials were studied. The research shows that a series of phase transitions occur along the composition gradient direction: α+β→α+β+Ti2Ni→β+TiNi→γ, and the transition layer is mainly composed of TiNi and Ti2Ni and binary phases such as Ti-Cr and Ti-Fe. The composition of the mixture; the microstructure from the bottom to the top of the material has undergone a transformation from Widmanst?tten α-laths to fine dendritic structure; the microhardness test of the deposited structure shows that the transition layer with the higher Ti2Ni phase area fraction is the hardest. This study found a maximum of 823 HV.
作者单位E-mail
黄金鑫 南京工业大学 1021848291@qq.com 
孙中刚 南京工业大学 sunzgg@njtech.edu.cn 
常辉 南京工业大学  
唱丽丽 南京中科煜宸激光技术有限公司  
邢飞 南京中科煜宸激光技术有限公司  
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