Experiment method for adjusting local sate of titanium alloy Alpha/Beta phase interface

Abstract

The invention discloses an experiment method for adjusting a local sate of a titanium alloy Alpha/Beta phase interface. The experiment method comprises the steps of processing a titanium alloy experiment sample to form a cylindrical shape, additionally arranging electrodes at two ends of a part of sample, and performing pulse current impact processing, wherein no pulse current impact processing isperformed on the other part of sample; cutting the sample along a middle line, and processing a cutting surface to obtain a sample which can be observing a gold phase; observing morphology of a Alphaphase and a Beta phase and change of the Alpha/Beta phase interface of the titanium alloy which is subjected to pulse current impact processing or is not subjected to pulse current impact processingby a scanning electron microscope under high power, and performing contrast to obtain an evolution rule of the titanium alloy Alpha/Beta phase after pulse current impact processing; and analyzing thestate change of the titanium alloy Alpha/Beta phase after the pulse current impact processing by a pulse current impact thermal effect and non-thermal effect action mechanism so as to obtain experiment conclusion. According to the method, the local state of the titanium alloy Alpha/Beta phase interface is adjusted by pulse current impact, the experiment method is low in time consumption and high in efficiency, and the change effect can be observed and verified.

Description

technical field [0001] The invention belongs to the field of titanium alloy materials, and in particular relates to an experimental method for adjusting the local state of a titanium alloy α / β phase interface. Background technique [0002] Titanium and its alloys have been widely used in aviation, aerospace, metallurgy, chemical industry, petroleum, medicine and other fields. Promising metal materials. The phase structure of common titanium alloys mainly includes α phase (close-packed hexagonal crystal structure) and β phase (body-centered cubic crystal structure). Since α phase and β phase are different crystal structures, the two have different contributions to the mechanical properties of titanium alloys. It is also different, the α phase mainly contributes to the strength and brittleness of the titanium alloy, and the β phase mainly contributes to the plasticity of the titanium alloy. The content and morphology of α-phase and β-phase in different types of titanium allo...

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Problems solved by technology

[0003] At present, the conventional method to adjust the α / β phase interface state of titanium alloy is heat treatment, but heat treatment is mainly aimed at the entire sample, not the local phase interface state, and the heat treatment process takes a long time and consumes a lot of energy. Sometimes it also needs high temperature, high pressure, vacuum, etc. Under certain conditions, the actual energy utilization efficiency is low

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