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烧结温度对MAX/Cu复合材料的组织及性能影响
Effect of Sintering Temperature on Microstructure and Properties of MAX/Cu Composites
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- DOI:
- 作者:
- 李海生1，周叶晨1，李烨飞1，郑巧玲1，何小林2，郑常勇2，陈雨时1，杨一帆1，张智浩1，包一兰1
LI Haisheng1, ZHOU Yechen1, LI Yefei1, ZHENG Qiaoling1, HE Xiaolin2, ZHENG Changyong2, CHEN Yushi1,
- 作者单位:
- 1.西安交通大学 金属材料强度国家重点实验室，陕西 西安710049；2.陕西国铁工业开发有限公司，陕西 西安710054
1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China; 2. Shaanxi Guotie Industrial Development Co., Ltd., Xi'an 710054, China
- 关键词:
- Ti3AlC2；MAX相；铜基复合材料
Ti3AlC2; max phase; copper matrix composites
- 摘要:
以一种典型的MAX相材料Ti3AlC2为原料，采用粉末冶金无压烧结的方式，压坯压力选用500 MPa，烧结时间为1 h，分别选用800、900、1 000、1 100、1 200 ℃ 5个烧结温度制备了MAX/Cu复合材料。通过对样品的金相、电导率与显微硬度等测试，探讨了不同烧结温度下MAX/Cu复合材料的组织及其性能变化。结果表明，无压烧结最佳烧结温度为1 100 ℃，可以得到综合性能最佳的复合材料，硬度、致密度和导电率分别达到330 HV、99.5%以上和4.6 mS/m。
Taking a typical MAX phase material Ti3AlC2 as raw material, MAX/Cu composites were prepared by the press-free sintering method of powder metallurgy with 500 MPa pressure and 1 h sintering time at 800, 900, 1 000, 1 100 and 1 200 ℃, respectively. The microstructure and properties of MAX/Cu composites at different sintering temperatures were investigated by testing the microstructure, electrical conductivity and microhardness of the samples. The results show that the optimum sintering temperature of press-free sintering is 1 100 ℃, and the composite with the best comprehensive properties can be obtained, with hardness, density and conductivity reaching 330 HV, 99.5% and 4.6 mS/m, respectively.