Static Shearing Rheological Behavior of Semi-solid A356 Alloy

Shi Juntao  Tang Jinglin  Zhu Yuefeng

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Static Shearing Rheological Behavior of Semi-solid A356 Alloy
Issue 2, Pages: 10-12(2001)
Published：2001
DOI：
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[1]石俊涛,唐靖林,朱跃峰.半固态A356合金静态剪切流变性能的初步研究[J].特种铸造及有色合金,2001(02):10-12+5. DOI：

Shi Juntao Tang Jinglin Zhu Yuefeng. Static Shearing Rheological Behavior of Semi-solid A356 Alloy[J]. Special Casting & Nonferrous Alloys, 2001, (2): 10-12. DOI：

摘要

采用改进的静态拉伸试验方法

在不同温度和载荷下

对发达枝晶和不同退化程度的枝晶组织的静态流变性能加以测试和比较

发现在同一温度、同样载荷下退化枝晶的流变性能明显优于发达枝晶

其形变临界切应力小于发达枝晶 ;退化枝晶流变性能对温度的敏感性高于发达枝晶

Abstract

The static rheological behavior of well developed dendrite and degenerated dendrite microstructure with various degenerated degrees were tested and compared by an improved static tensile testing method at different temperatures and loads. The results showed that the rheological behavior of degenerated dendrite is obviously better than that of well developed dendrite and the deformation critical shearing stress of degenerated dendrite is lower than those of well developed dendrite at the same temperature and load. The rheological behavior of the degenerated dendrite is more sensitive to temperature than that of well developed dendrite.