摘要
本文采用累积叠轧焊(简称ARB)方法,采用不同体积分数的TiN颗粒和铝箔做累积叠轧实验,制备出四种体积分数的TiN/Al复合材料,然后用维氏硬度计测试出其硬度以及对截取部分材料在金相显微镜观测下的微观组织进行分析。结果表明:体积分数在15%~30%的TiN颗粒,随着TiN颗粒体积分数的增加,硬度呈现上升的趋势,最高可达到纯铝的9倍;随着轧制道次的增加,复合材料的硬度也随之增加;其微观组织在不同的体积分数下,通过一定的轧制道次,均可得到TiN颗粒分布均匀、晶粒细小的且具有优良性能的复合材料。
In this paper, four kinds of TiN/Al composites were prepared by accumulative rolling welding (ARB) with different volume fractions of TiN particles and aluminum foil. Then the hardness of the material was measured by Vickers hardness tester and the microstructure of some materials was analyzed by metallographic microscope. The results show that the hardness of TiN particles with volume fraction of 15% - 30% increases with the increase of TiN particle volume fraction, which is up to 9 times of that of pure aluminum, and the hardness of the composites increases with the in-crease of rolling pass. Under a certain volume fraction and a certain rolling pass, the composites with uniform distribution of TiN particles, fine grains and excellent properties can be obtained.
出处
《材料科学》
CAS
2020年第12期993-1001,共9页
Material Sciences
