Equal channel angular pressing (ECAP), known as a super plastic deformation (SPD) method, is among the most effective approaches to prepare ultra-fine or even nano-crystalline materials.

• 在制备超细晶材料的方法中,等径转角挤压法(ECAP)是一种常用的,可以高效获得超细晶甚至是纳米晶组织的强塑性变形方法。