图 SPD起源 Load Anvil Upper Plunger 1990年之前： 俄罗斯Ufa航空技术大 Specimen 学RZ Valiev,V Lower Plunger Alexandrov用HPT Sample Support Torsion (High Pressure Torsion) a b 方法研究强烈塑性变形 Figure 2.The principle of HPT:(a)tool with a sample located within a cavity in the support anvil and(b)tool with cavities in both anvils 下的组织演变 材料科学与工程学院 School of Materials Science and Engineering
材料科学与工程学院 School of Materials Science and Engineering 7 1990年之前： 俄罗斯Ufa航空技术大 学 RZ Valiev, IV Alexandrov 用HPT (High Pressure Torsion) 方法研究强烈塑性变形 下的组织演变 SPD起源
© ECAP:Equal Channel Angular Pressing Plunger 等通道弯角挤压 等通道挤压 Die 等径角向挤压 Sample 等角挤压 等截面侧挤 70 to 100 mm in length <20 mm cross section diameter Figure 1.The principle of ECAP. 材料科学与工程学院 8 School of Materials Science and Engineering
材料科学与工程学院 School of Materials Science and Engineering 8 等通道弯角挤压 等通道挤压 等径角向挤压 等角挤压 等截面侧挤 70 to 100 mm in length <20 mm cross section diameter ECAP：Equal Channel Angular Pressing