Functional gradient titanium alloy strip and preparation method thereof

Abstract

The invention discloses a method for preparing a functional gradient titanium alloy strip. The method comprises the following steps: driving a raw material strip to move at a constant speed; electrically connecting a high energy pulse power supply with a moving strip by virtue of two immovable electric contact devices which are arranged along the strip moving direction at an interval, intermittently introducing high energy pulse current with the frequency of 60-760Hz, the voltage of 10-600V and the pulse width of 10-6000mu s into the strip, and performing high energy pulse treatment on the strip; cutting the treated strip, thereby obtaining the functional gradient titanium alloy strip. The invention also provides a functional gradient TC4 titanium alloy strip which is prepared from a TC4 titanium alloy strip with single mechanical property by adopting the preparation method, and the elasticity modulus of the strip continuously changes along the length direction of the strip. The preparation process is simple and low in cost, online continuous production can be realized, and an oxidation phenomenon on the strip surface is avoided in the preparation process. The titanium alloy strip does not cause the failure and breakage phenomena and is good in mechanical properties.

Description

technical field [0001] The invention relates to a titanium alloy strip and a preparation method, in particular to a preparation method of a titanium alloy strip with elastic modulus gradient distribution, and to a gradient function TC4 titanium alloy strip prepared by the method. Background technique [0002] With the global energy crisis and environmental pollution becoming more and more serious, in order to reduce energy consumption and reduce environmental pollution caused by motor exhaust emissions, in the fields of aviation, aerospace, automobiles and biomedicine, the benefits of lightweight structures are very important. Significantly, it can improve the maneuverability of motor tools, reduce fuel consumption, and reduce the requirements for transport tools and transportation costs. Automobiles and commercial (military) aircraft are large and wide means of transportation, and a small improvement in material structure will produce significant economic benefits. Traditi...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a method for preparing a functional gradient titanium alloy strip, so as to solve the technical problems of the existing method such as complex process, high cost, poor mechanical properties of the gradient functional titanium alloy strip, and easy fracture of the welded part.

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