TY - JOUR

T1 - Static coarsening behavior of equiaxed α phase in Ti−8Al−1Mo−1V alloy

AU - SHI, Xiao hui

AU - CAO, Zu han

AU - FAN, Zhi yuan

AU - ECKERT, Jürgen

AU - QIAO, Jun wei

N1 - Publisher Copyright: © 2021 The Nonferrous Metals Society of China

PY - 2021/6/28

Y1 - 2021/6/28

N2 - 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.

AB - 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.

KW - kinetics

KW - model

KW - static coarsening

KW - tensile properties

KW - Ti−8Al−1Mo−1V

UR - http://www.scopus.com/inward/record.url?scp=85108907548&partnerID=8YFLogxK

U2 - 10.1016/S1003-6326(21)65603-0

DO - 10.1016/S1003-6326(21)65603-0

M3 - Article

AN - SCOPUS:85108907548

VL - 31.2021

SP - 1628

EP - 1640

JO - Transactions of Nonferrous Metals Society of China (English Edition)

JF - Transactions of Nonferrous Metals Society of China (English Edition)

SN - 1003-6326

IS - 6

ER -