大晶粒QCrO．5的电致压缩超塑性  

Compression Super-plasticity of Big Grain Size QCr0. 5 under Electric-field

作　　者：张庆知[1] 王要利[1] 许方钊[1] 楮宝林[1] 翟智梁[1] 张勇[1] 张柯柯[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003

出　　处：《中国材料科技与设备》2011年第3期30-32,共3页Chinese Materials Science Technology & Equipment

基　　金：国家自然科学基金资助项目（50774029）;河南科技大学大学生训练计划项目（2010202）;

摘　　要：采用恒初始应变速率法对工业用铬青铜QCr0．5进行了电致压缩超塑性试验研究，考察了电场强度对流变应力及超塑压缩变形后QCr0．5显微组织的影响。结果表明，QCr0．5在750℃，初始应变速率为1．5×10^-4S^-1，电场强度为4KV／cm情况下具有较好的超塑性，且外加电场能有效细化QCr0．5显微组织。The compression super-plasticity of industrial QCr0. 5 with applied an external electric-field is investigated through the constant velocity tensile test, and the effect of electric-field on the true stress and microstructure of QCr0. 5 after compressive is studied. The results show that the QCr0. 5 has good super-plasticity under the condition of temperature of 750℃, initial strain rate of 1. 5 X 10^-4s^-1 and electric- field intensity of 4kV/cm, and the mierostructure of QCr0. 5 after compression can be refined by applied an external electricfield.

关 键 词：QCr0.5 电场 压缩超塑性 真应力真应变 

分 类 号：TG146.11[一般工业技术—材料科学与工程]