Effects of Processing Technology on Hot-compression Deformation Behavior of Cu-Cr-Zr Alloy

Wang Jingyi; Wang Qingjuan; Du Zhongze

doi:10.15980/j.tzzz.2015.06.029

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Effects of Processing Technology on Hot-compression Deformation Behavior of Cu-Cr-Zr Alloy
Vol. 35, Issue 6, Pages: 666-669(2015)
Published： 2015 ，
DOI： 10.15980/j.tzzz.2015.06.029

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[1]王静怡,王庆娟,杜忠泽.加工工艺对Cu-Cr-Zr合金热变形行为的影响[J].特种铸造及有色合金,2015,35(06):666-669.

Wang Jingyi, Wang Qingjuan, Du Zhongze. Effects of Processing Technology on Hot-compression Deformation Behavior of Cu-Cr-Zr Alloy. [J]. Special Casting & Nonferrous Alloys 35(6):666-669(2015)
[1]王静怡,王庆娟,杜忠泽.加工工艺对Cu-Cr-Zr合金热变形行为的影响[J].特种铸造及有色合金,2015,35(06):666-669. DOI： 10.15980/j.tzzz.2015.06.029.

Wang Jingyi, Wang Qingjuan, Du Zhongze. Effects of Processing Technology on Hot-compression Deformation Behavior of Cu-Cr-Zr Alloy. [J]. Special Casting & Nonferrous Alloys 35(6):666-669(2015) DOI： 10.15980/j.tzzz.2015.06.029.

摘要

在Gleeble-3500热模拟试验机上

对Cu-Cr-Zr合金进行了热模拟试验

研究了其真应力-应变曲线的变化规律。结果表明

合金的流变应力及峰值应力均随变形温度的升高和应变速率的降低而减小

说明该合金属于正应变速率敏感材料。在变形初始阶段

冷轧时效态合金的流变应力及应力增加速率大于时效态合金的。随着应变增大

时效态合金的流变应力大于冷轧时效态合金的。采用双曲正弦函数描述Cu-Cr-Zr合金的

求得其热变形激活能并建立该合金时效态和冷轧时效态的流变应力本构方程。

Abstract

Hot compression deformation of Cu-Cr-Zr alloys at 0.000 1

.100 0s-1 and 25

00℃ was carried out on the Gleeble-3500 thermal simulation testing machine.The flow stresses-strain curves at different deformation conditions were investigated.The results show that the flow stress and peak stress are decreased with the increase of temperature and increased with the increase of strain rate

which indicates Cu-Cr-Zr alloy belongs to a kind of positive strain rate sensitive material.The stress increment rate and the flow stress of the alloy at rolling aging state are more than those of aging state at the initial stage

and with the increase of strain

flow stress of the alloy at rolling aging state is lower than those of ones at aging state.The flow stress of Cu-Cr-Zr alloy during high temperature deformation can be expressed in hyperbolic sine function.Meanwhile

the hot deformation activation energy of two states during hot deformation was calculated

and constitutive equation was derived.