Subtransus deformation mechanisms of TC11 titanium alloy with lamellar structure

来源期刊：中国有色金属学报(英文版)2010年第11期

论文作者：宋鸿武 张士宏 程明

文章页码：2168 - 2173

Key words：TC11 titanium alloy; lamellar structure; deformation activation; deformation mechanism

Abstract: Isothermal compression tests are applied to study the deformation mechanisms of TC11 titanium alloy with lamellar structure under the deformation temperature range of 890-995℃and strain rate range of 0.01-10 s^-1. According to the flow stress data obtained by compression tests, the deformation activations are calculated based on kinetics analysis of high temperature deformation, which are then used for deformation mechanism analysis combined with microstructure investigation. The results show that deformation mechanisms vary with deformation conditions: at low strain rate range, the deformation mechanism is mainly dislocation slip; at low temperature and high strain rate range, twinning is the main mechanism; at high temperature and high strain rate range, the deformation is mainly controlled by diffusion of β phase.