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

Xiao hui SHI, Zu han CAO, Zhi yuan FAN, Jürgen ECKERT, Jun wei QIAO

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

1 Zitat (Scopus)

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.
OriginalspracheEnglisch
Seiten (von - bis)1628-1640
Seitenumfang13
FachzeitschriftTransactions of Nonferrous Metals Society of China (English Edition)
Jahrgang31.2021
Ausgabenummer6
DOIs
PublikationsstatusVeröffentlicht - 28 Juni 2021

Bibliographische Notiz

Funding Information:
The authors are grateful for the financial supports from the China Scholarship Council (No. 201906935013) and the National Natural Science Foundation of China (No. 51801132).

Publisher Copyright:
© 2021 The Nonferrous Metals Society of China

Dieses zitieren