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Advances in Materials Science and Engineering
Volume 2014 (2014), Article ID 413143, 9 pages
http://dx.doi.org/10.1155/2014/413143
Research Article

Dynamic Recrystallization Behavior of TA15 Titanium Alloy under Isothermal Compression during Hot Deformation

State Key Lab of Mechanical Transmission, Chongqing University, Chongqing 400044, China

Received 13 June 2014; Revised 28 August 2014; Accepted 31 August 2014; Published 19 October 2014

Academic Editor: Rui Vilar

Copyright © 2014 Yuanxin Luo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to improve the understanding of the dynamic recrystallization (DRX) behaviors of TA15 titanium alloy (Ti-6Al-2Zr-1Mo-1V), a series of experiments were conducted on a TMTS thermal simulator at temperatures of 1173 K, 1203 K, 1223 K, and 1273 K with the strain rates of 0.005 s−1, 0.05 s−1, 0.5 s−1, and 1 s−1. By the regression analysis for conventional hyperbolic sine equation, the activation energy of DRX in two-phase region is and in region is , and a dimensionless parameter controlling the stored energy was determined as in two-phase region and as in region. The DRX behaviors of TA15 titanium alloy were proposed on the strength of the experiment results. Finally, the theoretical prediction results of DRX volume fraction were shown to be in agreement with experimental observations.