摘要
研究了Ｔｉ－４７．８ａｔ．－％Ａｌ合金从α相区冷至室温再在双相区时效后，层状组织的转变机理及不连续粗化．层状组织转变过程与时效温度和形成过饱和α＿２单相时的冷却速度有关．建立了层状组织转变的动力学模型．层状组织的稳定性随片间距减小而降低，表现为时效时发生不连续粗化．
Transformation mechanism and discontinuous coarsening of lamellar structure were studied by cooling Ti-47.8at.-%Al alloy fromα region to room temperature and then aging in the two phase region.The lamellar transformation process relates to aging temperature and cooling rate,at which α_2 single phase forms. A model of lamellar transformation kinetics was developed.The stability of lamellae decreases with decreasing interlamellar spacing and discontinuous coarsening occurres during aging.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第3期A117-A123,共7页
Acta Metallurgica Sinica
