Segregation of liquid phase in the extruded semisolid metal

被引：0

作者：

Yang, Z ^{[1
]}

Zhang, HF ^{[1
]}

Wang, AM ^{[1
]}

Ding, BZ ^{[1
]}

Hu, ZQ ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2003年 / 19卷 / 03期

关键词：

semisolid metal; solid/liquid segregation; hydrostatic pressure; sliding of grains;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of stress and strain on the solid/liquid segregation formed in deformed semisolid metal was studied. The compression experiment at a low constant strain rate was conducted on a Gleeble 1500 thermo-mechanical simulator. The stress and strain fields of the samples were calculated by finite element method. The experiment results and the modeling results prove that the hydrostatic pressure gradient is the driving force for solid/liquid segregation. The segregated liquid phase usually agglomerates in the micropores and shear bands are created by sliding of equiaxed dendrite grains. The sliding among the grains is influenced by the solid fraction and grain size of the semisolid slurry, so as the solid fraction and grain size change, the morphology of the segregated liquid changes.

引用

页码：209 / 212

页数：4

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