摘要
采用热压烧结和热挤压工艺成功制备出SiC颗粒增强铝基复合材料,探究了烧结温度和热挤压工艺对复合材料显微结构、抗拉强度以及断裂方式的影响。结果表明,随着烧结温度增加,铝基复合材料密度和抗拉强度逐渐增大。热挤压工艺可以极大地提高铝基复合材料的致密性和力学性能,烧结温度为600℃时挤压态铝基复合材料密度为2.85 g/cm3,抗拉强度为223.7 MPa。
The SiC particle reinforced Al-matrix composites were prepared using hot-press sintering and then hot extruded method, and the effect of sintering temperature and hot-extruded technology on the microstructures, tensile strength and fracture mechanisms of the composites was investigated. The results show that the density and tensile strength of the composites increase with the increase of the sintering temperature. The hot-extruded technology can improve the density and mechanical properties of the Al-matrix composites. When the sintering temperature is 600 ℃, the density and tensile strength of the as-extruded Al-matrix composites is 2.85 g/cm^3 and 223.7 MPa, respectively.
出处
《铸造技术》
CAS
北大核心
2014年第12期2955-2957,共3页
Foundry Technology
关键词
SIC
铝基复合材料
热压
烧结温度
SiC
Al-matrix composites
hot press
sintering temperature
