挤压铸造ZA27蜗轮的力学性能及摩擦磨损性能  

Mechanical Properties and Friction-Wear Behavior of Squeezing Casting ZA27 Worm Gear

作　　者：朱权利[1] 吴资湧[1] 夏勇[1] 陈家坚 

机构地区：[1]华南理工大学机械与汽车工程学院 [2]广东华金合金材料实业有限公司

出　　处：《特种铸造及有色合金》2014年第10期1116-1118,共3页Special Casting & Nonferrous Alloys

摘　　要：对比研究了金属型重力铸造和挤压铸造下ZA27合金的显微组织、力学性能以及摩擦磨损性能。结果表明,挤压铸造可有效减少甚至消除ZA27合金的缩孔、缩松缺陷,细化晶粒组织,改善晶界富铜ε相形态及分布,使强度、塑性及耐磨性得到显著提高。Mierostructure and mechanical properties as well as friction and wear behavior of squeezing casting ZA27 alloy were analyzed comparatively with those of permanent mould casting ones. The resuits reveal that squeeze casting process can decrease or eliminate shrinkage porosity （holes）, refine mi- crostructure and improve the shape and distribution of copper-rich ε phase, which are responsible for the improvement of the mechanical properties, such as tensile strength, elongation and wear behavior.

关 键 词：挤压铸造 ZA27合金 力学性能 耐磨性 

分 类 号：TG249.2[金属学及工艺—铸造]