Journal
MATERIALS LETTERS
Volume 282, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2020.128852
Keywords
Dynamic transformation; Titanium alloys; Microstructure evolution; Diffusion; Phase transformation
Funding
- Hebei Steel-Iron Joint Grants Program [E2018203130]
Ask authors/readers for more resources
This study investigated the counterintuitive strain-induced alpha -> beta dynamic transformation of commercial pure titanium deformed at a temperature below the beta-transus. It was found that the serrated-shaped beta phase first formed at grain boundaries and then grew into grains, eventually transforming the initial equiaxed alpha grain into a (alpha + beta) lamellar structure. The development of beta phase laths was controlled by moving dislocations in the alpha phase, and both were influenced by the diffusion of beta-stabilizing elements. Moreover, the redistribution of Fe in CP-Ti resulted in a special reversal transformation of beta -> alpha during the isothermal holding period after deformation.
A counterintuitive strain-induced alpha -> beta dynamic transformation of commercial pure titanium deformed at a temperature below the beta-transus was investigated. It was revealed that the serrated-shaped beta phase first formed at grain boundaries and then grew into a grains. Finally, the initial equiaxed a grain was transformed into a (alpha + beta) lamellar structure. The development of beta phase laths was controlled by moving dislocations in the a phase, and both were affected by the diffusion of beta-stabilizing elements. Furthermore, the redistribution of Fe in CP-Ti resulted in a special reversal transformation of beta -> alpha in the isothermal holding period after deformation. (C) 2020 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available