TiB_2颗粒增强Ni_3Al基复合材料的组织和性能

STUDY 0N THE MICR0STRUCTURES AND MECHANICAL PR0PERTIES OF Ni_3Al-BASED C0MP0SITE REINF0RCED WITH TiB_2 PARTICLES

比较了自行制备的TiB2颗粒增强的Ni3Al基复合材料铸态和经热处理后的微观组织和高温压缩机械性能。结果显示，经1100℃×48h热处理后，TiB2颗粒的大小、形貌均有较大改变。TiB2颗粒增强Ni3Al基复合材料具有比基体高的弹性模量、屈服强度，但塑性有所降低。

The as-cast and heat treated microstructures and compression strength during high temperature of a Ni3Al matrix composite reinforced with TiB2 particles were studied. The results showed that the morphology of formed TiB2 particles obviously changed after 1100℃ x 48 hr. heat treatment. The composite exhibited a higher elasticity m0dulus and yield strength than that of the base alloy,but some loss of ductility.