C70250合金热变形行为研究  

Hot Plastic Deformation Behavior of C70250 Alloy

作　　者：李华清[1] 汤玉琼[1] 陈忠平[1] 

机构地区：[1]苏州有色金属研究院有限公司,江苏苏州215026

出　　处：《上海有色金属》2010年第1期5-9,共5页Shanghai Nonferrous Metals

基　　金：中铝科技基金(No.2007KJA10)

摘　　要：采用Gleeble-3500热模拟试验机进行热压缩试验，研究了Cu-3．6Ni-1．0Si合金在变形温度为500～950℃、变形速率为0．01～10s。状态下的热塑性变形行为。根据应力．应变数据，构建了cu．3．6Ni-1．0Si合金热塑性变形过程中流变应力与变形温度、变形速率等加工参数之间的本构关系方程。经过参数拟合与优化，得到Cu-3．6Ni-1．0Si合金在650～950℃之间、热变形过程的应力．应变速率关系方程。试验结果及分析表明，Cu-3．6Ni-1．0Si合金加热保温及开轧温度应以950℃为上限，终轧温度以高于7000C为宜，不能低于650℃，热轧加工变形速率范围在0．1～10s-1之间。The hot plastic deformation behavior of C70250 alloy in the temperature range of 500 - 950℃ and strain rate range of 0.01 ～ 10s^-1 was investigated by hot compressing test on a Gleeble-3500 imulator. The constitutive equation among stress temperature and strain rate was calculated according to the data of true stress-strain curve under various temperatures as well as different strain rates. The test results indicate that the suitable rolling temperature is between 700℃ and 950℃, and the strain rate is 0.1 - 10s^-1.

关 键 词：C70250合金 流变应力 热变形 应变速率 

分 类 号：TG146.11[一般工业技术—材料科学与工程]