超声振动对TC1钛合金板材成形性能的影响

Effects of ultrasonic vibration on formability of TC1 titanium alloy sheet

摘要:

通过超声振动辅助拉伸试验，研究了超声振动的频率、振幅及间歇振动方式等参数对TC1钛合金板材应力与应变、屈服强度、抗拉强度及延伸率等拉伸性能指标的影响。通过拉伸试件的组织和性能分析，研究了超声振动参数对TC1板材金相组织、断口形貌及维氏硬度的影响。研究结果表明，TC1钛合金板材拉伸过程中叠加一定频率、振幅的超声振动可以明显降低材料的屈服强度和抗拉强度，并且在一定工艺参数条件下还可以较大幅度提高材料的延伸率，而且对其组织和性能影响较小。

Abstract:

The influence of frequency, amplitude and intermittent vibration modes of ultrasonic vibration on the stress and strain, yield strength, tensile strength and elongation of TC1 titanium alloy sheet is studied by ultrasonic vibration assisted tensile test. The influence of ultrasonic vibration parameters on the microstructure, fracture morphology and vickers hardness of TC1 sheet is studied by analyzing the microstructure and properties of tensile specimen. The results show that superimposed a certain frequency and amplitude of the ultrasonic vibration can significantly reduce the material yield strength and tensile strength in the TC1 titanium alloy sheet tensile process. The elongation of the material can be greatly improved under certain technological parameters, and the effect on the microstructure and properties of TC1 sheet is less.