Texture contribution in grain refinement effectiveness of different routes during ECAP

被引：14

作者：

Hoseini, Majid ^{[1
,2
]}

Meratian, Mahmood ^{[2
]}

Toroghinejad, Mohammad R. ^{[2
]}

Szpunar, Jerzy A. ^{[1
]}

机构：

[1] McGill Univ, Dept Min Met & Mat Engn, Montreal, PQ H3A 2B2, Canada

[2] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 497卷 / 1-2期

关键词：

ECAP; Grain refinement; Texture; Processing routes; Angular orientation; Aluminum;

D O I：

10.1016/j.msea.2008.06.012

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 [材料科学与工程]; 080502 [材料学];

摘要：

Equal channel angular pressing (ECAP) is a processing tool for introducing grain refinement in wide range of materials. It has been proved that the effectiveness of the grain refinement depends on how the sample is rotated between passes. The increasing order of effectiveness for the routes has already been determined in fcc metals corresponding to die angles 90 degrees and 120 degrees. This order was found different for those die angles. Effect of processing routes on grain refinement effectiveness was studied by texture investigation of angular relation between crystallographic slip plane in the sample and the plane in where next shear deformation takes place. The angle theta between {1 1 1} planes in the aluminum sample and shear plane in the following ECAP pass was measured before each pass in the all the processing routes. It is shown that closer the theta angles to 70 degrees, higher will be the grain refining effectiveness. (C) 2008 Elsevier B.V. All rights reserved.

引用

收藏

页码：87 / 92

页数：6

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