CuNiSi系合金热压缩行为研究  

Hot Compression Behavior of CuNiSi Series Alloy

作　　者：陈少华 李银华[2] 刘平[2,3] 贾淑果[2] 田保红[2] 任凤章[2] 

机构地区：[1]中铝洛阳铜业有限公司板带分厂 [2]河南科技大学材料科学与工程学院 [3]上海理工大学机械工程学院

出　　处：《特种铸造及有色合金》2009年第2期120-122,共3页Special Casting & Nonferrous Alloys

基　　金：国家高技术研究发展计划项目(863计划)资助项目(2006AA03Z528);国家自然科学基金资助项目(50571035);河南省杰出青年基金资助项目(0521001200)

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。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.

关 键 词：CuNiSiP合金 CuNiSiAg合金 热压缩变形 动态再结晶 热模拟 

分 类 号：TG146.1[一般工业技术—材料科学与工程] TG113.2[金属学及工艺—金属材料]