高固相半固态ZK60-RE合金压缩过程液相变化机制

单巍巍; 罗守靖

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高固相半固态ZK60-RE合金压缩过程液相变化机制
Variation of Liquid During Compression of Semi-solid ZK60-RE Alloy at High Solid Content
2007年第S1期页码：388-391
纸质出版：2007
DOI：
稿件说明：

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[1]单巍巍,罗守靖.高固相半固态ZK60-RE合金压缩过程液相变化机制[J].特种铸造及有色合金,2007(S1):388-391. DOI：

Shan Weiwei Luo Shoujing. Variation of Liquid During Compression of Semi-solid ZK60-RE Alloy at High Solid Content[J]. Special Casting & Nonferrous Alloys, 2007, (S1): 388-391. DOI：

摘要

研究了高固相半固态ZK60-RE合金压缩过程液相变化机制。结果表明

在压缩过程中

液相会在很小的应变处

形成液相路径。随着应变的增加

液相路径不断变化导致应力不断降低

宏观表现为触变行为。应变速率高时

液相路径呈不断生成及消失现象;应变速率低时

液相路径呈单一而逐渐变宽现象。

Abstract

Variation of liquid during compression of semi-solid ZK60-RE alloy at high solid content is studied in this paper.The results show that liquid path can form in a small strain.With increase the strain

the liquid path varies to decrease the stress

which means the thixotropic behaviour.When the strain rate was relatively low

liquid was squeezed out and formed liquid paths with a low speed and had enough time to gather gradually to make the flow stress progressively decrease;when the strain rate was relatively high

liquid formed liquid paths in a very short time and did not have enough time to absorb other liquid during compression.