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研究了TiAl+Sb合金的蠕变性能.试验结果表明,该合金在760℃存在着明显的蠕变三个阶段.应力常数n在低应力区和高应力值的区不同,720~800℃范围内,激活能Qc值较大的变化,表明了蠕变机制的改变和蠕变过程的复杂性。金相表明,变形试样中存在动态再结晶现象.
The creep property of TiAl + Sb alloy was studied. The experimental results show that the alloy has obvious creep three stages at 760 ℃. The stress constant, n, is different in low stress zone and high stress zone. The larger Qc value of activation energy in the range of 720-800 ℃ indicates the change of creep mechanism and the complexity of creep process. Metallographic shows that there is dynamic recrystallization in the deformed specimen.