粉末冶金技术2025，Vol.43Issue(1)：94-101,8.DOI:10.19591/j.cnki.cn11-1974/tf.2023070005
微米TiC颗粒对选区激光熔化Inconel 625合金微观组织及力学性能的影响
Effects of micro-TiC particles on microstructure and mechanical properties of selective laser melting Inconel 625 alloys
摘要
Abstract
The Inconel 625-xTiC(x=0,2%,4%,6%,mass fraction)alloys were prepared by selective laser melting forming technology.The effects of micro-TiC particles on the microstructure and mechanical properties of Inconel 625-xTiC alloys were investigated.The results show that the Inconel 625-xTiC alloys are mainly composed of γ-Ni,TiC,and Laves(Cr2Nb)phases.With the increase of TiC mass fraction,the microstructure of Inconel 625-xTiC alloys gradually changes from the columnar dendrites in the middle of the melt tracks and the equiaxed crystals at the junction of the melt tracks to the cellular equiaxed crystals and other substructures.When the TiC mass fraction is 6%,the hardness and tensile strength of Inconel 625-xTiC alloys are the highest,which are HV0.2(525.3±15.13)and(1440.31±22.33)MPa,respectively;however,the total elongation decreases from(30.0±0.56)%to(3.2±0.98)%.关键词
激光选区熔化/Inconel 625合金/TiC颗粒/微观组织/力学性能Key words
selective laser melting/Inconel 625/TiC particles/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
苑振宇,常成,齐慧英,肖海波,闫星辰..微米TiC颗粒对选区激光熔化Inconel 625合金微观组织及力学性能的影响[J].粉末冶金技术,2025,43(1):94-101,8.基金项目
广东省科学院发展专项基金项目(2022GDASZH-2022010107) （2022GDASZH-2022010107）
广东省科学院建设国内一流研究机构行动专项资金项目(2021GDASYL-20210102005) （2021GDASYL-20210102005）
广东省基础与应用基础研究基金项目(2020A1515111031,2021A1515010939) （2020A1515111031,2021A1515010939）
中国科协"青年人才托举工程"(YESS20210269) （YESS20210269）
广东省特支项目(2019BT02C629) （2019BT02C629）
广东省科学院国际科技合作平台建设项目(2022GDASZH-2022010203-003) （2022GDASZH-2022010203-003）
广州市重点领域研发计划(20200702008) （20200702008）
