A method for preparing β-series titanium alloy atomization raw material wire using pure titanium powder

By localizing and attaching fine powder of β-stabilizing elements to the surface of pure titanium coarse powder cores to form a powder-locking shell, the problems of uneven composition and high processing difficulty in the preparation of β-series titanium alloy wires are solved, and the efficient preparation and high yield of fine diameter wires are achieved.

CN122125218APending Publication Date: 2026-06-02GUIZHOU TITANIUM NEW MATERIALS CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
GUIZHOU TITANIUM NEW MATERIALS CO LTD
Filing Date
2026-03-31
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing technologies are difficult to effectively prepare fine-diameter β-series titanium alloy wires due to problems such as uneven composition, high processing difficulty, and high cost. Furthermore, flux-cored wire technology has not been applied to the preparation of β-series titanium alloy powder raw materials.

Method used

β-series titanium alloy atomization raw material wire was prepared by using pure titanium coarse powder. A reaction layer was formed by localizing and attaching β-stabilizing element fine powder to the surface of the pure titanium coarse powder core, and then covering it with a pure titanium fine powder locking shell layer to form a continuous thermal and electrical conductive network. Combined with warm working and heat treatment, a powder-locking reaction unit was prepared.

Benefits of technology

It significantly improved the uniformity of wire composition and structural integrity, reduced fine powder migration and resegregation during processing, improved wire feeding stability and arc coupling stability, and obtained β-series titanium alloy powder with more uniform composition, more concentrated particle size and higher yield.

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Abstract

This invention provides a process for preparing β-based titanium alloy atomization raw material wire and process using pure titanium coarse powder, relating to the field of titanium alloy powder preparation technology. The wire includes a pure titanium sheath and a powder core filled within the sheath. The powder core is formed by stacking multiple powder-locking reaction units. Each powder-locking reaction unit includes a pure titanium coarse powder core, a reaction layer composed of β-stabilizing element fine powder localized and attached to the surface of the pure titanium coarse powder core, and a pure titanium fine powder locking shell layer covering the outside of the reaction layer. Pure titanium bridging fine powder is provided between adjacent units. During preparation, surface shaping treatment, two-stage low-energy mechanical fusion, encapsulation, warm processing, and two-stage heat treatment are performed to preferentially form a sintered neck network between the powder-locking shell layer and the bridging fine powder. This wire exhibits high compositional uniformity and good wire feeding stability, making it suitable for plasma atomization preparation of β-based titanium alloy powder.
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