Heat treatment method suitable for Ti2AlNb alloy electron beam welding
By performing solid solution heat treatment on Ti2AlNb alloy, cooling of PAG coolant and thermal insulation destressing annealing treatment, combined with electron beam welding and gas quenching treatment, the problems of poor plasticity and poor welding properties during alloy welding are solved, and the excellent mechanical properties of the welded parts are achieved.
CN119640177AActive Publication Date: 2025-03-18GAONA AERO MATERIAL CO LTD
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Patent Information
- Application Number
- CN202411973260.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2044-12-30
AI Technical Summary
Technical Problem
Ti2AlNb alloy has problems of poor room temperature plasticity and poor solderability during welding, which limits its engineering application.
Method used
The heat treatment method of solid solution heat treatment, PAG coolant cooling and insulation and stress-relieving annealing treatment is adopted, combined with electron beam welding and gas quenching treatment, to form excellent double-slat structure.
Benefits of technology
The room temperature and high temperature tensile properties of Ti2AlNb alloy weldments are improved, and the comprehensive mechanical properties of welding are enhanced.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to the technical field of welding, in particular to a heat treatment method suitable for Ti2AlNb alloy electron beam welding. A heat treatment method suitable for Ti2AlNb alloy electron beam welding comprises the following steps that (a) solid solution heat treatment is conducted on a Ti2AlNb alloy forge piece, PAG cooling liquid is adopted for cooling, then heat preservation stress relief annealing treatment is conducted, and a pretreated forge piece is obtained; (b) the pretreated forge piece is subjected to electron beam welding, gas quenching is adopted after electron beam welding, and a welding piece is obtained; and (c) carrying out aging treatment on the welding piece, and carrying out gas quenching after the aging treatment to obtain the Ti2AlNb alloy welding piece. According to the heat treatment method suitable for Ti2AlNb alloy electron beam welding, through cooperation of all the steps, a double-batten structure with excellent comprehensive performance is obtained, and the room-temperature and high-temperature tensile performance of a Ti2AlNb alloy weldment can be improved.
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