摘要
The microstructure variation during heat treatment and the correlation between structure and room temperature tensile properties of TiAl based alloy were studied. The duplex structure, composed of fine lamellar colonies and equiaxial γ grains, with superior room temperatureplasticity can he obtained by heat treatment at γ+α phase zone with controlled cooling rate. It is believed that its plasticity results from fine grains and higher volume fraction of lamellar structure.
The microstructure variation during heat treatment and the correlation between structure and room temperature tensile properties of TiAl based alloy were studied. The duplex structure, composed of fine lamellar colonies and equiaxial γ grains, with superior room temperatureplasticity can he obtained by heat treatment at γ+α phase zone with controlled cooling rate. It is believed that its plasticity results from fine grains and higher volume fraction of lamellar structure.
