Accessible Requires Authentication Published by De Gruyter January 31, 2020

Deformation characteristics of Cu-30 % Zn alloy subjected to dynamic equal channel angular pressing (DECAP)

Mingya Zhang, Li Liu, Zhenyi Huang and Jinghui Li

Abstract

In this study, the applicability of dynamic equal channel angular pressing for grain refinement and improvement in the properties of a two-phase Cu-30 %Zn alloy was investigated. Simulation and experiments were performed to study the deformation characteristics. The parameters for the multi-pass extrusion simulation were consistent with those in the experiments. The experimental results are in good agreement with the simulation. A homogeneous microstructure and grain refinement are readily achieved. The hardness increases rapidly by 170 % compared to the annealed samples, and its distribution is approximately uniform throughout the 2-pass deformation. Microstructural analysis indicates nanotwins of ~5–10 nm width and high-density dislocations.


Correspondence address, Dr. Jinghui Li, School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, People's Republic of China. Tel.: +86 15395692941, Fax: +86 0555-2311571, E-mail: , Web: http://yjxy.ahut.edu.cn/info/4674/15652.htm

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Received: 2019-02-11
Accepted: 2019-10-01
Published Online: 2020-01-31
Published in Print: 2020-02-12

© 2020, Carl Hanser Verlag, München