搅拌铸造法制备TiC增强纯镁复合材料的组织与性能  

Microstructure and Properties of TiC Reinforced Pure Magnesium Composites Prepared by Stir Casting

作　　者：赵玉玺 郭瑞臻 乐启炽 赵大志 李小强 任良 李洪运 胡文鑫[2] ZHAO Yu-xi;GUO Rui-zhen;LE Qi-chi;ZHAO Da-zhi;LI Xiao-qiang;REN Liang;LI Hong-yun;HU Wen-xin(School of Materials Science and Engineering,Northeastern University,Shenyang110819,Liaoning,China;State Key Laboratory of Bayan Obo Rare Earth Resource Researches and Comprehensive Utilization,Baotou Research Institute of Rare Earths,Baotou 014030,Inner Mongolia,China)

机构地区：[1]东北大学材料科学与工程学院,辽宁沈阳110819 [2]包头稀土研究院,内蒙古包头014020

出　　处：《铸造》2022年第9期1144-1149,共6页Foundry

基　　金：国家自然科学基金(51974082);内蒙古自治区科技计划项目课题(2020GG0175);高等学校学科创新引智计划2.0(BP0719037)。

摘　　要：通过搅拌铸造的方法制备了碳化钛(TiC)颗粒增强纯镁基复合材料(TiC/Mg),研究了向纯镁基体中添加不同含量碳化钛(TiC)对复合材料组织与力学性能的影响。结果表明:纳米TiC加入到纯镁中未观察到明显的反应产物,TiC能够稳定地存在于镁基体中;随着碳化钛(TiC)添加量的增加,复合材料的力学性能显著增加,添加量为5%时,材料的抗拉强度增加了25.45 MPa,较基体提升了14.0%,抗压强度增加了29.6 MPa,较基体增强了9.2%。TiC/Mg composite was fabricated by stirring casting. The effect of adding different contents of Titanium Carbide(TiC) to the pure magnesium matrix on the microstructure and mechanical properties of the composites was studied. The research indicated that no obvious reaction products were observed when the nano-TiC was added to the pure magnesium, and the TiC exist stably in the magnesium matrix;with the addition of 5% TiC, the mechanical properties of the composites increased significantly. When the addition of 5% TiC, the tensile strength of the composites increased by 25.45 MPa, which was 14.0% higher than that of the matrix. The compressive strength of the composite was increased by 29.6 MPa, 9.2% higher than that of the matrix.

关 键 词：镁基复合材料 搅拌铸造 力学性能 Ti C颗粒增强 

分 类 号：TG292[金属学及工艺—铸造]