ECAP (Equal Channel Angular Pressing) is a technique subjecting materials to extensive deformation by simple shear and used to make an ultra-fine grained board and stick.

• 等通道转角挤压技术(Equal Channel Angular Pressing，简称ECAP)，是一种通过简单的剪切原理使材料产生强烈的塑性变形，从而实现制备超细晶块体或棒体材料的有效方法。