深度塑性变形法的研究现状和前景

Present State and Perspectives of Severe Plastic Deformation

深度塑性变形加工与传统变形方法相比具有很大的优点,可得到超细晶金属和合金,其微观组织结构和性能也发生很大的变化。通过介绍累积轧合法、等通道角挤压法和高压扭转法等3种目前最主要的深度塑性变形方法,分析了深度塑性变形法的特点和现状,并对其未来进行了展望。

Compared with traditional processing methods, the severe plastic deformation （SPD） has some advantages. It can produce ultra-fine grain metals or alloys and has a strong impact on the microstructure and mechanical properties of materials. Three principal SPD methods, i.e. accumulative roll bonding, equal channel angular pressing, and high pressure and torsion, as well as the characteristics, present state and perspectives of SPD are summarized in this paper.