超塑变形对ZA27合金性能的影响  

Effect of Superplastic Deformation on Mechanical Property of ZA27 Alloy

作　　者：沈焕祥[1] 赵品[1] 

机构地区：[1]燕山大学材料科学与工程学院,河北秦皇岛066004

出　　处：《热加工工艺》2003年第5期10-12,共3页Hot Working Technology

摘　　要：研究了ZA27合金的超塑性和超塑变形对力学性能的影响。得到最佳超塑参数为:变形温度280℃;初始应变速率6.6×10-2s-1,最大伸长率δ5达980%。在300℃经总变形量为35%的超塑变形后,与金属型重力铸造试样相比,抗拉强度稍有提高,伸长率可提高10%以上。Superplasticity of ZA27 alloy and the effect of superplastic deformation on mechanical property were studied. The best superplastic deformation parameter is obtained:deformation temperature is at 280℃,beginning strain rate is at 6.6×10-2s-1,maximum extensibility reach 980%.After total superplastic deformation amount 35% at 300℃,the change of tensile strength is not large,but extensibilit rate can be raised over 10%.

关 键 词：锌铝合金 ZA27 超塑性 变形 

分 类 号：TG146.13[一般工业技术—材料科学与工程] TG319[金属学及工艺—金属材料]