摘要
采用脉冲钨极氩弧表面熔敷工艺在镁合金AZ31板材表面制备了纳米SiC陶瓷颗粒和铝粉增强表面复合材料层,该工艺是一种有效制备高性能表面复合材料层的方法。复合材料层内部获得显著细化的晶粒,而且纳米SiC陶瓷颗粒分布均匀。AZ31母材的硬度只有55HV左右,而复合材料层的硬度达到155HV,其耐磨性和耐腐蚀性能均优于镁合金AZ31母材。
Nano SiC ceramic particles and aluminum powders reinforced surface composite layer is prepared on the surface of magnesium alloy AZ31 by pulse current gas tungsten arc （GTA） processing. This method is an effective technique in producing a high performance surface modified composite layer. The formation of a homogeneous crack/ defect-free and grain refinement microstructure are obtained in the composite layer. The hardness of as received Mg alloy AZ31 is 55HV, while that of the GTA surface modified composite layer is approximately 155HV. The hardness, wear resistance and corrosion behavior of the GTA surface modified layer are superior to those of the as-received AZ31.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2008年第8期110-113,共4页
Materials Reports
基金
国家高技术研究发展计划(863)计划基金项目(2006AA09A105)
关键词
纳米SiC陶瓷颗粒
铝
脉冲钨极氩弧
表面复合材料层
nano SiC ceramic particles, aluminum, pulse current gas tungsten arc,surface composite layer
