挤压铸造TiB2P/Al复合材料室温力学性能

采用挤压铸造法制备不同体积分数的TiB_2P/Al复合材料, 利用扫描电镜、 硬度计、 拉伸试验机等对复合材料的室温力学性能进行了研究, 系统地分析了体积分数和热处理工艺对材料力学性能的影响。结果表明: 挤压铸造TiB_2P/Al复合材料的布氏硬度、 抗弯强度和弹性模量随增强相TiB₂体积分数的增加而提高。45% TiB_2P/Al复合材料T6处理后硬度和抗弯强度分别比退火态时提高了23%和40%, 但热处理状态对弹性模量的影响不大。 

Ambient mechanical properties of TiB2P/Al composites by squeeze casting

TiB2P/Al composites with different volume fractions were fabricated by squeeze casting, the ambient mechanical properties of the composites were studied by means of scanning electron microscopy (SEM), hardness measurement, tensile testing, etc, and the effects of volume fraction and heat treatment on the mechanical properties of the composites were systematically studied. The results show that the Brinell hardness, bending strength and elastic modulus of the TiB2P/Al composites increase with the increasing of the volume fraction of TiB2. The hardness and bending strength of T6-45vol% TiB2P/Al composite increase by 23% and 40% compared with the compo-site in the anneal state, but the effect of heat treatment on the elastic modulus is not obvious.