文章摘要
压扭对20CrMnTi端面组织性能的影响研究
Influence of High-pressure Torsion on Microstructure and Properties for End Surface of 20CrMnTi
Received:March 02, 2010  Revised:May 10, 2010
DOI：
中文关键词: 高压扭转法  20CrMnTi材料  显微组织  显微硬度
英文关键词: high-pressure torsion  20CrMnTi  microstructure  microhardness
基金项目:安徽省二00八科技攻关计划面上项目（08010202132）
Author NameAffiliation
LIU Wei School of Material Science and Engineering，Hefei University of Technology， Hefei 230009， China 
XUE Ke-min School of Material Science and Engineering，Hefei University of Technology， Hefei 230009， China 
LI Ping School of Material Science and Engineering，Hefei University of Technology， Hefei 230009， China 
LI Qi School of Material Science and Engineering，Hefei University of Technology， Hefei 230009， China 
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中文摘要:
      通过实验对20CrMnTi材料的高压扭转成形过程进行了研究，重点考察了试样的端面的组织分布和硬度的变化，分析了外界压力、扭转圈数2个重要的工艺参数对20CrMnTi材料组织和硬度的影响。实验结果表明：高压扭转能够有效地细化晶粒，改善材料组织，且随着外界压力的增大、扭转圈数的增多，晶粒细化越明显，显微硬度提高越显著。
英文摘要:
      In this paper，the HPT process of 20CrMnTi was studied by using experimental methods. The microstructure distribution and the microhardness change on the end surface of the deformed sample were both investigated, the influence of two important technological parameters of ambient pressure and torsional laps on the microstructure and microhardness of 20CrMnTi were analyzed as well. It indicates that HPT can effectively refine the grain and improve microstructure of the material，with the increase of pressure and torsional laps，the grains become much finer and the microhardness improvement is more obvious than ever before.
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