SHEAR DEFORMATION OF HIGH SOLID FRACTION (GREATER-THAN-0.60) SEMISOLID SN-PB UNDER VARIOUS STRUCTURES

被引：37

作者：

MARTIN, CL ^{[1
]}

BROWN, SB ^{[1
]}

FAVIER, D ^{[1
]}

SUERY, M ^{[1
]}

机构：

[1] MIT,DEPT MAT SCI & ENGN,CAMBRIDGE,MA 02139

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 1995年 / 202卷 / 1-2期

关键词：

DEFORMATION; SEMISOLID ALLOYS;

D O I：

10.1016/0921-5093(95)09797-X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

The behavior of high solid fraction (> 0.60) semi-solid Sn-Pb alloys was studied in pure shear deformation using a Couette geometry rheometer. Three structures were investigated: a classical coarse dendritic structure, a globular structure obtained by reheating a fine dendritic structure (R.G.) and a globular structure generated by vigorous stirring during solidification (S.G.). The slurries were subjected to shear rates ranging from 0.01 to 50 s(-1). Experimental data for dendritic structure and for R.G. are compared to the model proposed by Nguyen et al. (Proc. 2nd Int. Conf. on Processing of Semi-Solid Alloys and Composites, Boston, USA, 1992, p.296; and Int. J. Plast. 10 (1994) 693). The S.G. structure exhibited a very different behavior compared with globular structures obtained from a fine dendritic precursor (R.G.). This behavior is interpreted in terms of an agglomeration/disagglomeration model.

引用

页码：112 / 122

页数：11

共 24 条

[1]

RHEOLOGY OF SEMISOLID DENDRITIC SN-PB ALLOYS AT LOW STRAIN RATES - APPLICATION TO FORMING PROCESS [J].