EFFECTS OF TWO－STEP HEAT－TREATMENT ON MICROSTRUCTURE AND PROPERTIES OF TiAl INTERMETALLICS
来源期刊：中国有色金属学报(英文版)1995年第2期
论文作者：Kong Gaoning Huang Baiyun Qu Xuanhui Lei Changming He Yuehui
文章页码：109 - 112
Key words：intermetallics ;heat treatment ;tensile properties
Abstract: Special heat-treatment was used to improve the mechanical properties at room temperature of TiAl-based alloys which were isothermal forged (1050℃, 82%). The results showed that proper two-step heat treatment could decrease or eliminate large-grained lamellar structure produced by inhomogeneous deformation,and gain fine, homogeneous duplex microstructure. And the volume ratio of γ:α2/γ was about 1:1. The room temperature ductility of the TiAl alloys reached 3. 3% with high strengths.
