WIT Press


Improvement In Toughness Of Semi-solid Light Metal By The ECAP Process

Price

Free (open access)

Paper DOI

10.2495/HPSM160141

Volume

166

Pages

10

Page Range

153 - 162

Published

2017

Size

4,801 kb

Author(s)

T. Kitazumi, K. Natori, T. Tanaka

Abstract

To improve the formability of high strength aluminum alloys (extra super duralumin 7075), the authors focused on two methods, semi-solid casting and Equal-Channel Angular Pressing (ECAP) processing. Solidified semi-solid cast samples of two different solid fractions were prepared. The samples were processed by ECAP, and the improvement in mechanical properties were investigated. Improvement in ductility increased with lower solid fraction. Four-pass ECAP-processed semi-solid cast AA7075 had higher strength and ductility than wrought AA7075-O.

Keywords

equal-channel angular pressing, semi-solid casting, 7075 aluminum alloy, grain refinement