强变形是细化晶粒的有效方法,甚至可以制备纳米材料,最近十几年来大量的强变形方法涌现出来,研究也越来越多.介绍了等通道角挤压、高压扭转、连续限制带材角轧挤、循环挤压、限制斜槽压缩、反复弯曲校平、累积叠轧焊等方法,回顾了各种方法可以得到的最大应变量、细化晶粒效果及应变量计算公式.阐述了强变形及剪切变形细化晶粒的机制.
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