摘要
剧烈塑性变形(SPD)通过引入大应变量而具有强大的晶粒细化能力,可制备力学性能和使用性能优异的超细晶材料,因此表现出诱人的应用前景和发展潜力,其中基于挤压的剧烈塑性变形技术更引起国内外研究者的兴趣.本文综述了基于挤压的剧烈塑性变形技术和发展趋势,根据变形模式和特点将其主要方法进行了分类,并归纳总结为常规挤压式SPD、等通道转角挤压、扭转挤压与集成组合挤压式SPD四大类,阐述了典型方法的基本原理、变形特点及其优缺点,举例介绍了这些方法的研究与应用进展,分析并提出了改进措施与发展方向,以期推动基于挤压的剧烈塑性变形技术的工程化应用.
Severe plastic deformation(SPD)has strong grain refining ability by introducing large strain,and can prepare bulk nanostructured and ultrafine-grained materials with excellent mechanical properties and service properties,showing attractive application prospect and development potential.The SPD technique based on extrusion has attracted the increasing attention of the research community.The present overview summarized developments and recent achievements in SPD technology based on extrusion.According to the deformation modes and characteristics,they are classified into four categories:Conventional extruded SPD(CE-SPD),Equal channel angular extrusion(ECAE),Torsional extrusion(TE)and Integrated extruded SPD(IE-SPD).The fundamental principle,characteristic of deformation,advantages and disadvantages were illustrated.The progress in the research and application of these methods were introduced with examples.At the same time,some solutions and prospects were put forward on the basis of the discussion above.It is beneficial to promote the engineering application of SPD technology based on extrusion.
作者
王强
薛勇
于建民
张治民
WANG Qiang;XUE Yong;YU Jianmin;ZHANG Zhimin(School of Materials Science and Engineering, North University of China, Taiyuan 030051, China;National Defense Innovation Center of Extrusion Forming Technology for Complex Components, North University of China, Taiyuan 030051, China)
出处
《中北大学学报（自然科学版）》
CAS
2022年第1期1-10,18,共11页
Journal of North University of China(Natural Science Edition)
基金
国家自然科学基金资助项目(51775520)。
关键词
剧烈塑性变形
挤压
金属材料
超细晶
力学性能
severe plastic deformation(SPD)
extrusion
metallic material
ultrafine-grained metals
mechanical property
