1.31%C超高碳钢的压缩超塑性研究  

Study on Compression Superplasticity of 1.31%C Ultrahigh Carbon Steel

作　　者：刘帅[1] 张柯柯[1] 任伟[1] 杨蕴林[1] 张占领[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：《热加工工艺》2008年第10期8-10,共3页Hot Working Technology

基　　金：国家自然科学基金资助项目(50774029);河南省杰出青年科学基金资助项目(074100510011);河南省自然科学基金资助项目(0511050800)

摘　　要：通过观察退火态w(C)=1.31%超高碳钢超塑压缩试样的外观形态,测定其压缩真应力-真应变曲线,探讨了超塑压缩温度、应变速率对超高碳钢压缩超塑性的影响。结果表明,超高碳钢在750～790℃、(0.8～2)×10-3s-1超塑压缩条件下,其应变速率敏感性指数大于0.3,呈现出压缩超塑性变形。Through observing the appearance of compression samples of annealed 1.3 lwt%C ultrahigh carbon steel （UHCS） and measuring the compression stress - strain curve, the effects of temperature and strain rate on compression superplasticity of the ultrahigh carbon steel were discussed. The results show that the ultrahigh carbon steel under the condition of superplastic compression of 750-790 ℃ and strain rate of （0.8～2）×10-3s-1, the strain rate sensitivity is over 0.3, the UHCS possesses the superplastic compression deformation.

关 键 词：超高碳钢 真应力-真应变 应变速率敏感性指数 压缩超塑性 

分 类 号：TG142.31[一般工业技术—材料科学与工程]