文献类型：期刊文献

英文题名：Viscosity estimation of semi-solid alloys based on thermal simulation compression tests

作者：Wang, Jiaojiao[1];Shang, Shuzhen[2];Lu, Guimin[1];Yu, Jianguo[3]

机构：[1]E China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China;[3]E China Univ Sci & Technol, Sch Resource & Environm Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：104

期号：3

起止页码：255

外文期刊名：INTERNATIONAL JOURNAL OF MATERIALS RESEARCH

收录：;EI(收录号：20131516195887);WOS:【SCI-EXPANDED(收录号:WOS:000316519200004)】；

基金：This work was supported by the National Natural Science Foundation Project of China (50874049).

语种：英文

外文关键词：Semi-solid ZL201 alloy; Constitutive relationship; Flow stress; Viscosity; Power law

摘要：In this paper, according to the thermal simulation compression test data, relationships for flow stress, temperature, strain rate and strain of semi-solid ZL201 alloy were studied through multiple regressions, and the constitutive equation of the alloy was established. The relationship between apparent viscosity and the shear rate was also researched. The results indicated that the maximum stress increased as strain rates increased at a constant temperature. The peak stress was clearly affected by deformation temperature, strain rate and strain. The plateau stress showed the same characteristics as the peak stress. In general, it increased slightly with increasing of the deformation temperature, except at high strain rates. The relationship between apparent viscosity and the shear rate was in accordance with the power law. The results provided a technological reference for the study of semi-solid die-casting numerical simulation of semi-solid ZL201 alloy parts. The viscosity of other semi-solid alloys could be calculated, as in the case of viscosity estimation of semi-solid ZL201 alloy.