摘要
ＺＡ－２７铸造高强锌基合金，由于凝固温度范围宽（３７５－４８４℃）在凝固过程中，容易产生疏松组织，且铸件不同部位的性能差异较大。通过２００～２５０℃挤压加工，ＺＡ－２７合金疏松组织得以消除，综合性能，特别是抗拉强度大幅度提高，并且，消除了不同部位的性能差异，从而提高了制品的使用寿命。
High Strength Zinc-base casting alloy ZA-27 has the probability to form Shrinkage porosity structure during solidification because it has a vwider solidification range(375～484℃),which results in a great difference in properties among different parts in a casting.This problem was overcomed and compredensive properties, especially the tensile strength of ZA-27 alloy was increased by a large amount through extruding work,thus the service-life of the parts is extended.
出处
《材料科学与工艺》
CAS
CSCD
北大核心
1996年第2期91-95,共5页
Materials Science and Technology
关键词
疏松
挤压加工
锌合金
ZA-27 alloy
shrinkage porosity
extruding work
