陶瓷颗粒增强SiC_p/Al铝基复合材料制备和性能研究  

Investigation on the Fabricating Process of Particle Reinforced SiC_p/Al Aluminum Matrix Composite

作　　者：郝世明[1] 毛建伟[2] 谢敬佩[3] 刘佳斌[1] 

机构地区：[1]河南科技大学物理工程学院,河南洛阳470023 [2]上海交通大学金属基复合材料国家重点实验室,上海200240 [3]河南科技大学材料与工程学院,河南洛阳470023

出　　处：《铸造》2017年第4期332-336,共5页Foundry

基　　金：国家自然科学基金(51371077);河南省高等学校重点科研项目(16A140007);河南科技大学高级别科研项目培育基金(2015GJB009);河南科技大学重大科技项目培育基金(2015ZDXM01)

摘　　要：采用液态搅拌铸造工艺制备了体积分数为15%和20%的Si C_p/ZL108两种铝基复合材料,通过拉伸测试、组织观察和耐磨性能实验,研究了增强颗粒Si C对基体合金的显微组织、力学性能与耐磨性能的影响。结果表明,在基体ZL108中加入不同体积分数的Si C_p后,颗粒分布均匀,组织致密,增加了复合材料中的位错密度,力学性能、弹性模量得到提高,材料的磨损性能有大幅度的改善,Si C_p的良好支撑作用、导热性能和高体积分数是复合材料耐磨性能优良的主要原因。In this paper, two kinds of advanced particle reinforced SiCp/ZL108 composites with volume fraction 15vol% and 20vol% respectively were fabricated by liquid stirring casting technology. The effects of SiCp on the microstructure, mechanical properties and wear-resisting property were investigated by means of tensile test, observation of microstructure and wear-resistance test. The results show that with different volume content of SiC addition, the SiCp distribution is homogeneous and the density ofmicrostructure is high. The SiCp additions increase the dislocation density of the experimental composites; as a result, the mechanical property and Young＇s modulus are enhanced as well as the wear-resisting property. The excellent wear-resisting performance of SiCp/ZL108 is ascribed to the good supporting ability, heat conductivity and high-volume fraction of reinforced particle SiC.

关 键 词：铝基复合材料 颗粒增强 SICP 陶瓷 ZL108铝合金 耐磨损性 

分 类 号：TB333[一般工业技术—材料科学与工程]