|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Phase Transformations and Microstructural Evolution
||Observation of All 12 Alpha Variants and Strip Microstructure in Multi-component Titanium Alloys
||Hongchao Kou, Yi Chen, Jiangkun Fan, Yudong Zhang, Bin Tang, Jinshan Li
|On-Site Speaker (Planned)
Titanium has been an attractive material for numerous industries duo to excellent strength-to-weight ratio, corrosion resistance and biological compatibility. An understanding of the phase transformation and microstructure evolution is required for optimization of thermomechanical process and improvement of the properties in multi-component titanium alloys. This paper report two research works on alpha variants and novel strip structure in multi-component titanium alloys. 1) The effect of the changing of the local composition in beta matrix on the precipitation of alpha phase was investigated based on the Ti-5.04Al/Ti-1.52Mo (at.%) diffusion couple. The results showed that all 12 alpha variant formed in a single beta grain in the diffusion zone after secondary heat treatment. 2) The microstructure in beta-quenched Ti-5Al-5Mo-5V-3Cr-0.5Fe alloy was characterized, and an interesting strip structure with ~15nm in width and parallel arrange in almost all beta matrix was easily observed. The chemical composition and atomic-scale microstructure were analyzed and discussed.
||Planned: A print-only volume