Effect of Aging Treatment on the Microstructure of Ti-Al-Mo Alloy AITranslate

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Chinese Library Classification Number:TG146.23[一般工业技术]

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In response to the actual working conditions of heating phenomenon of Ti-Al-Mo alloy during long-term service in the field of ultrasonic cutting,the microstructure evolution of Ti-Al-Mo alloy before and after aging treatment was studied using X-ray fluorescence spectrometer(XRF),scanning electron microscope(SEM),and transmission electron microscope(TEM).The results indicate that the aging treatment does not change the crystal structure of the matrix.During the aging treatment,no solute atoms are dissolved from the matrix and no precipitated phase is formed.There are many dislocations in the primaryα-Ti grains of Ti-Al-Mo alloy before aging treatment,which disappear after aging treatment.The solid solubility of Mo atoms inβ-Ti is relatively high,while the solid solubility of Al atoms inα-Ti andβ-Ti is basically the same.And the solid solubility rules of Mo and Al atoms does not change with the aging process.Therefore,although Ti-Al-Mo alloy has a heating effect during long-term service,its matrix crystal structure does not change and only the dislocation configurations are affected to some extent.It can be considered that the aging process has no significant effect on the service life of the alloy.Therefore,the Ti-Al-Mo alloy is suitable for long-term service in ultrasonic cutting scene with heating effect.