A preparation method of titanium alloy wire with high torsional performance based on texture control

Abstract

The embodiment of the present invention provides a method for preparing titanium alloy wire with high torsional performance based on texture control. At 10-20°C above the phase transition point of phase titanium alloy, the material undergoes "α+β→β" phase transformation, eliminating the axial texture formed by elongation forging and billet rolling, so as to obtain the consistency of transverse and longitudinal microstructure and properties On the other hand, the introduction of the "Y-type three-roller warm rolling" method changes the stress mode of the material plastic deformation process, with the radial rolling stress as the main force and the axial tensile stress as the supplementary force. There is rolling friction between them, which greatly weakens the axial and radial anisotropy during the warm rolling process of the wire, and the grain shape and size of the transverse and longitudinal structures are basically the same, thereby improving the radial (circumferential) torsion performance of the wire, and Greatly improve the fracture torsion angle of titanium alloy wire.

Description

technical field [0001] The invention belongs to the technical field of titanium alloy wire preparation, and in particular relates to a method for preparing titanium alloy wire with high torsional performance based on texture control. Background technique [0002] Traditional titanium alloy wires are hot-drawn with graphite milk-lubricated hole dies for diameter reduction processing, which is inefficient and accumulates unidirectional drawing plastic deformation processing. The plastic deformation process of the material is changed from the original axial tensile stress deformation. Supplemented by radial compressive stress, there is sliding friction between the material and the wall of the die hole, the grains of the wire material are preferentially oriented along the axial direction, and the difference in the transverse and longitudinal structures is significant, especially the grains of the longitudinal structure are elongated, resulting in axial Significantly different fr...

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Problems solved by technology

[0003] In order to solve the technical problems of low longitudinal elastic modulus, significant difference between axial and longitudinal properties, and poor plastic deformation in the prior art when titanium alloy is stretched, the present invention provides a texture control based The preparation method of titanium alloy wire with high torsion performance, the technical problem to be solved in the present invention is realized through the following technical solutions:

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