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http://dx.doi.org/10.5228/KSPP.2005.14.6.553

Texture and Plastic Strain Ratio of the Severe Shear Deformed with ECAP and Heat-treated AA 1050 Aluminum Alloy Sheet  

Akramov S. (금오공과대학교 신소재시스템공학부)
Lee M. K. (금오공과대학교 신소재시스템공학부)
Park B. H. (금오공과대학교 신소재시스템공학부)
Kim I. (금오공과대학교 신소재시스템공학부)
Publication Information
Transactions of Materials Processing / v.14, no.6, 2005 , pp. 553-558 More about this Journal
Abstract
A study on the microstructure, the texture and the formability of the samples after ECAPed and subsequent heat-treated AA 1050 aluminum alloy sheet have been carried out. The specimens after the ECAP showed a very fine grain size, a decrease of <100> // ND, and an increase of <111> // ND textures. The $\{111\}<112>,\;\{123\}<634>,\;\{110\}<001>,\;\{112\}<111>,\;\{110\}<111>,\;and\;\{013\}<231>$ texture components were increased in the specimens after the ECAP and subsequent heat-treatment at $400^{\circ}C$ for 1 hour. One of the most important properties in sheet metals is formability. The r-value or plastic strain ratio has was as a parameter that expressed the formability of sheet metals. The change of the plastic strain ratios after the ECAP and subsequent heat-treatment conditions were investigated and it was found that they were two times higher than those of the initial Al sheets. This could be attributed to the formation above texture components through the ECAP and subsequent heat-treatment of AA 1050 Aluminum alloy sheet.
Keywords
Equal Channel Angular Pressing(ECAP); Severe Shear Deformation; Texture; Microstructure; R-value; Plastic Strain Ratio; Formability;
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