高压扭转对20CrMnTi组织和力学性能的影响  

Influence of high-pressure torsion on microstructural and mechanical properties of 20CrMnTi

作　　者：李琦[1] 李萍[1] 薛克敏[1] 刘为[1] 董传勇[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,安徽合肥230009

出　　处：《合肥工业大学学报（自然科学版）》2010年第9期1304-1307,1314,共5页Journal of Hefei University of Technology：Natural Science

基　　金：国家自然科学基金资助项目(50875042);安徽省2008科技攻关计划资助项目(08010202132);安徽省优秀青年科技基金资助项目(10040606Y21);霍英东教育基金资助项目(121053)

摘　　要：文章以20CrMnTi为研究对象,研究了压力和扭转圈数对试样子午面的显微组织及显微硬度的影响。结果表明,随着压力和扭转圈数的升高,试样子午面的组织得到细化;距试样中心5 mm处的组织细化效果最为显著,显微硬度的测量结果与显微组织观察结果基本一致。The influence of applied load and number of revolutions on microstructure and microhardness on the meridian plane of sample prepared with 20CrMnTi is studied.The results reveal that the microstructure on the meridian plane of sample is refined with increasing applied load and number of revolutions;and that the microstructure which is 5 mm away from the center of sample is refined dramatically,and the measured result of microhardness has a good consistency with that of the microstructure.

关 键 词：20CrMnTi 高压扭转 显微组织 显微硬度 

分 类 号：TG376[金属学及工艺—金属压力加工]