TiAl基合金高温动态损伤的研究  

ELEVATED DYNAMIC DAMAGE TO TiAl BASED ALLOY: A STUDY

作　　者：欧文沛[1] 黄伯云[1] 贺跃辉[1] 曲选辉[1] 陈小群[1] 雷长明 

机构地区：[1]中南工业大学粉末冶金研究所

出　　处：《矿冶工程》1997年第1期68-70,共3页Mining and Metallurgical Engineering

摘　　要：通过研究ＴｉＡｌ基合金全层片组织试样在高温形变过程中的显微组织结构变化，来探讨高温形变动态损伤过程。研究表明，动态再结晶形成的γ相晶粒与α２／γ晶团组成的晶隅存在，以及这种晶隅上的晶界面变形不协调发展而导致大量缺陷产生。This paper studies the process of dynamic damage by observation of changes in full lamelar microstructure of TiAl based alloy sample during elevated deformation. It shows that the existence of the triple point consisting of γ phase crystal grains produced by dynamic vecrystallization and α 2/γ crystal colony and the incoordinate development of crystal interface deformation of the triple poiet can result to large numbers of defects, which is attributed mainly to the dynamic damage.

关 键 词：动态损伤 钛铝合金 

分 类 号：TG146.23[一般工业技术—材料科学与工程]