摘要
采用半固态机械搅拌法制备不同粒度的SiC颗粒增强铝基复合材料,研究SiC粒度对复合材料的微观组织、硬度及耐磨性能的影响。结果表明,粒度为100μm时,复合材料中SiC颗粒分布均匀,没有明显的团聚现象,布氏硬度值最大,相对磨损率最小。其磨损机理是较软的铝基体对SiC颗粒起很好的支撑效果,使镶嵌在合金基体中耐磨的SiC颗粒对合金基体起到保护作用,减少粘着磨损的发生。
Al matrix composites reinforced with various sizes of SiC particles were fabricated via semi-solid state mechanical agitation. The influence of SiC particle size on microstrucutures, hardness and wear properties of composite was investigated. The results show that SiC particles are uniformly distributed without obvious agglomeration, Brinell hardness value is the biggest, and relative wear rate is the smallest when SiC particles size is 100 μm. The abrasion mechanism is that SiC particles are well supported by softer A1 matrix, which plays a role of protection, and results in the decrease of adhesive wear.
出处
《兵器材料科学与工程》
CAS
CSCD
2011年第3期18-20,共3页
Ordnance Material Science and Engineering
基金
西安市工业攻关项目(GG06059)
陕西省教育厅专项科研计划项目(08JK361)
