中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 11 No. 5 October 2001 |
Formation of fine fully-lamellar microstructure
of TiAl-based alloy in rapid heating
cyclic heat treatment process
of TiAl-based alloy in rapid heating
cyclic heat treatment process
（State Key Laboratory for Powder Metallurgy,
Central South University,Changsha 410083, P.R.China）
Abstract:The optical observation results of neocrystallization nucleation and growth of fine fully-lamellar (FFL) α2/γ microstructure of a TiAl-based alloyin rapid heating cyclic heat treatment process were reported. The characteristics of α+γ→αtransformation under rapid heating conditions were analysed. A model for explaining the nucleation and growth mechanism of FFL α2/γ microstructure was proposed.
Key words: rapid heating; cyclic heat treatment; nucleation and growth; model; mechanism
