TiC添加对A356铝合金组织 与力学性能的影响研究  

Research on Effects of TiC Addition on Microstructure and Mechanical Properties of A356 Aluminum Alloy

作　　者：王晓宇 贾金浩 马世卿 王天宇 刘洋 李伯超 蔡政 王春晓 兰紫光 WANG Xiaoyu;JIA Jinhao;MA Shiqing;WANG Tianyu;LIU Yang;LI Bochao;CAI Zhen;WANG Chunxiao;LAN Ziguang(School of Materials Science and Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Hebei Key Laboratory of Advanced Materials for Transportation Engineering and Environment,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]石家庄铁道大学材料科学与工程学院,河北石家庄050043 [2]石家庄铁道大学交通工程与环境协同发展新材料重点实验室,河北石家庄050043

出　　处：《热加工工艺》2024年第18期60-64,68,共6页Hot Working Technology

基　　金：国家自然科学基金资助项目(51804202);河北省自然科学基金资助项目(E2019210295)。

摘　　要：采用搅拌熔铸法,制备了组织结构均匀的TiC/A356铝合金,研究了TiC含量对A356铝合金的物相组成、微观组织和力学性能的影响规律。结果表明,随着TiC含量的增加,TiC/A356铝合金的拉伸强度和伸长率呈先上升后降低的规律,维氏硬度则持续上升。当TiC含量为3wt%时,合金的综合性能最佳,其极限抗拉强度为197.1 MPa、伸长率为9.10%、维氏硬度为84.7 HV。此外,还分析了TiC复合强化A356合金的作用机理模型。TiC/A356 aluminum alloy with uniform structure was prepared by stirring casting method.The effects of TiC content on the phase composition,microstructure and mechanical properties of A356 aluminum alloy were studied.The results show that with the increase of TiC content,the tensile strength and elongation of TiC/A356 aluminum alloy increase first and then decrease,while the Vickers hardness increases continuously.When the content of TiC is 3wt%,the alloy possesses the optimal comprehensive properties,with the ultimate tensile strength 197.1 MPa,the elongation 9.10%,and the Vickers hardness 84.7HV.Furthermore,the mechanism model of TiC compound reinforced A356 alloy was analyzed.

关 键 词：TIC A356铝合金 微观组织 力学性能 强化机理 

分 类 号：TB333.12[一般工业技术—材料科学与工程]