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Coarsening of (αTi) + (βTi) Microstructure in the Ti–Al–V Alloy at Constant Temperature
Author(s) -
Gornakova Alena S.,
Straumal Boris B.,
Prokofiev Sergey I.
Publication year - 2018
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201800510
Subject(s) - materials science , microstructure , annealing (glass) , alloy , grain boundary , scanning electron microscope , metallurgy , ternary operation , titanium alloy , grain size , analytical chemistry (journal) , crystallography , composite material , chemistry , chromatography , computer science , programming language
The microstructure evolution of the Ti–6 wt% Al–4 wt% V alloy with increasing annealing time t at constant temperature T = 800 °C is studied. This temperature is in the two‐phase region (αTi) + (βTi) of Ti–Al–V ternary phase diagram. The annealing time t varies from 7 to 840 h. The microstructure of the annealed samples is investigated using optical and scanning electron microscopy. The average grain size of (αTi) and (βTi) phases grows approximately proportional to t 1/4 . This indicates that both processes are controlled by the diffusion along grain boundaries (αTi)/(αTi) and (βTi)/(βTi) and/or interphase boundaries (αTi)/(βTi).