Static coarsening behavior of equiaxed α phase in Ti−8Al−1Mo−1V alloy
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Authors
Organisational units
External Organisational units
- Erich Schmid Institute of Materials Science
- College of Materials Science and Engineering
- Taiyuan University of Science and Technology
Abstract
To get a deep understanding of the evolution behavior of equiaxed α phase in Ti−8Al−1Mo−1V alloy during annealing, its static coarsening mechanism was studied based on the calculations of coarsening exponent n and the activation energy for α boundary migration. The result of n=6 indicates a special coarsening mechanism of equiaxed α phase. The activation energy for α boundary migration is calculated to be 138 kJ/mol, which is close to the activation energy for grain growth of pure α-Ti. It is revealed that the coarsening of equiaxed α can be mainly attributed to the self-diffusion of Ti atoms across the α/α boundaries. Based on the experimental findings, a static coarsening kinetics model of equiaxed α grains in the α+β field is established. At last, the effects of the coarsening behavior of equiaxed α on tensile properties were studied.
Details
Original language | English |
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Pages (from-to) | 1628-1640 |
Number of pages | 13 |
Journal | Transactions of Nonferrous Metals Society of China (English Edition) |
Volume | 31.2021 |
Issue number | 6 |
DOIs | |
Publication status | Published - 28 Jun 2021 |