半固态流变学模型的研究进展  

Recent Developments in Rheological Modeling of Semisolid Metals

作　　者：徐海燕[1] 张福全[1] 

机构地区：[1]湖南大学材料科学与工程学院,长沙410082

出　　处：《材料导报》2003年第8期16-18,共3页Materials Reports

摘　　要：半固态金属(SSM)加工是金属成型的一项新技术。SSM加工以半固态金属浆料作原料。SSM浆料通常表现出两种独特的流变特性:假塑性和触变性。SSM各种加工方法都是在这两个特性的基础上发展起来的。所以,发展SSM加工方法要从掌握浆料的流变特性开始。总结比较了现有的流变学模型。Semisolid metal (SSM) processing is a relatively new technology for metal forming. Starting from semisolid slurries,SSM processing exhibits two distinctive rheological characteristics :pseudoplastic(or shear thinning) and thixotropy. All the currently available technologies for SSM processing have been developed based on those unique rheological properties. So,understanding the rheological characteristics of SSM slurries should be the first step toward developing new SSM processing. In this paper,progress in rheological modeling of SSM processing is reviewed to provide some useful clues to further studies in the area.

关 键 词：半固态金属加工 SSM加工 流变特性 假塑性 触变性 金属成型 

分 类 号：TG15[金属学及工艺—热处理]