CuNiSi系合金热压缩行为研究

陈少华; 李银华; 刘平; 贾淑果; 田保红; 任凤章

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CuNiSi系合金热压缩行为研究
Hot Compression Behavior of CuNiSi Series Alloy
2009年29卷第2期页码：120-122
纸质出版日期： 2009 ，
DOI：

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[1]陈少华,李银华,刘平,贾淑果,田保红,任凤章.CuNiSi系合金热压缩行为研究[J].特种铸造及有色合金,2009,29(02):120-122+92-93.

Chen Shaohua1, Li Yinhua2, Liu Ping2, et al. Hot Compression Behavior of CuNiSi Series Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(2):120-122.
[1]陈少华,李银华,刘平,贾淑果,田保红,任凤章.CuNiSi系合金热压缩行为研究[J].特种铸造及有色合金,2009,29(02):120-122+92-93. DOI：

Chen Shaohua1, Li Yinhua2, Liu Ping2, et al. Hot Compression Behavior of CuNiSi Series Alloy[J]. Special Casting & Nonferrous Alloys, 2009,29(2):120-122. DOI：

摘要

在Gleeble-1500D热模拟试验机上

采用高温等温压缩试验

绘制了真应力-真应变曲线。分别讨论了变形温度、变形速率和合金元素对CuNiSi系列合金在高温压缩变形中的行为的影响。结果表明

应变速率和变形温度的变化对合金的再结晶影响较大

变形温度越高

合金越容易发生动态再结晶;应变速率越小

合金也越容易发生动态再结晶

所对应的峰值应力也越低

且CuNiSiP合金的流变应力在相同条件下高于CuNiSiAg合金的流变应力

最后求得了CuNiSiP和Cu-NiSiAg合金的变形激活能。

Abstract

True stress-true strain of CuNiSi series alloys during hot compression deformation was drawn by isothermal compression testing at Gleeble-1500D thermal-mechanical simulator.Effects of temperature

deformed rate and alloying element on high temperature compression behavior of CuNiSi series alloy were approached.The results reveal that dynamic recrystallization is controlled by both strain rate and deformation temperature.With increasing in deformation temperature and decreasing in strain rate

dynamic recrystallization of the alloy is easer to take place

which results in the decrease of peak stress.In addition

flow stress of CuNiSiP is higher than that of CuNiSiAg alloy at the same condition.Deformation activation energy of CuNiSiP and CuNiSiAg alloy are presented.