Ti(C_(0.5)N_(0.5))颗粒增强钛基复合材料显微组织和力学性能的研究  

Research on microstructure and mechanical properties of Ti(C_(0.5)N_(0.5)) particle reinforced Ti matrix composites

作　　者：韩威 姜中涛[2,3] 杨鑫 敬小龙 Han Wei;Jiang Zhongtao;Yang Xin;Jing Xiaolong(School of Mechanical Engineering,Chengdu University,Chengdu 610100,Sichuan,China;School of Materials Science and Engineering,Chongqing University of Arts and Sciences,Chongqing 402160,China;Chongqing Key Laboratory of Materials Surface and Interface Science,Chongqing 402160,China)

机构地区：[1]成都大学机械工程学院,四川成都610100 [2]重庆文理学院材料科学与工程学院,重庆402160 [3]材料表界面科学重庆市重点实验室,重庆402160

出　　处：《钢铁钒钛》2022年第3期59-64,共6页Iron Steel Vanadium Titanium

基　　金：重庆市教育委员会科技项目(No.KJQN202001306)。

摘　　要：以纯Ti粉、Ti(C_(0.5)N_(0.5))颗粒为原料,采用粉末冶金工艺,制备了Ti(C_(0.5)N_(0.5))颗粒增强钛基复合材料,研究了Ti(C_(0.5)N_(0.5))含量对钛基复合材料组织和力学性能的影响。结果表明:Ti(C_(0.5)N_(0.5))颗粒的添加,显著细化了钛基体的晶粒,晶粒形貌由粗大的柱状晶转变为细小的等轴晶;随着Ti(C_(0.5)N_(0.5))含量的增加,钛基复合材料的孔隙明显减少,致密度提高,钛基复合材料的硬度和屈服强度逐渐增加,但压缩应变逐渐减小。Using pure Ti powder and Ti(C_(0.5)N_(0.5)) particles as raw materials, Ti(C_(0.5)N_(0.5)) particle reinforced Ti matrix composites were prepared by powder metallurgy process. The effects of Ti(C_(0.5)N_(0.5))content on the microstructure and mechanical properties of titanium matrix composites were studied.The results show that the addition of Ti(C_(0.5)N_(0.5)) particles significantly refines the grain size of Ti matrix, and the grain morphology changes from coarse columnar grain to fine equiaxed grain. With the increase of Ti(C_(0.5)N_(0.5)) content, the porosity of Ti matrix composites decreases obviously, the density increases, and the hardness and yield strength of Ti matrix composites increase gradually, but the compressive strain decreases gradually.

关 键 词：钛基复合材料 Ti(C_(0.5)N_(0.5))颗粒 粉末冶金 显微组织 力学性能 

分 类 号：TF823[冶金工程—有色金属冶金] TG146.2[一般工业技术—材料科学与工程]