ZnAl_(5-0.03)合金超塑性的研究(Ⅳ)——超塑性变形过程中显微组织的变化  

Study on the Superplastie Property of Alloy ZnAl_(5-0.03) (Ⅳ)—Changes of Microstructure during Superplastic Deformation

作　　者：吕萌福[1] 季文源[2] 

机构地区：[1]天津理工学院 [2]天津大学冶金分校

出　　处：《上海金属（有色分册）》1990年第1期27-33,共7页

摘　　要：ZnAl_(5-0.03)合金超塑性变形过程中晶粒的热长大是次要的,而变形量能有效地促进晶粒长大,在大变形量的条件下还伴随着呈现孔洞。提高应变速率使晶粒细化,组织微粒化,在高应变速率下呈现孔洞,继续提高应变速率会使孔洞发展。本文还讨论了变形过程中显微组织变化规律与超塑性力学行为间的关系。During the superplastic deformation of ZnAl_(5-0.03) alloy,the thermalgrowth of grains are second,the deformation amount can efficiently promovethe grain growth.Under large deformation amount,there will be accompaniedwith holes.Fining and micronizing the grain,by raising the strain rate,theholes will be present and become large,under high strain rate.The relationsare discussed between the regulation of microstructure changes and the superp-lastic behaviour,during deformation.

关 键 词：锌铝合金 超塑性 变形 显微组织 

分 类 号：TG146.3[一般工业技术—材料科学与工程]