一种提高Ti-Al-B系钛合金锻件强韧匹配的方法

By adding Fe and using refined processes to prepare Ti-Al-B titanium alloys, the problem of poor strength and toughness matching has been solved, achieving high strength and high toughness in the material and promoting its application in fields such as marine engineering.

CN118326196BActive Publication Date: 2026-07-17CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
Filing Date
2024-04-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Ti-Al-B titanium alloy forgings suffer from a poor balance between strength and toughness. Existing technologies often result in a significant reduction in plasticity and toughness when improving strength.

Method used

By increasing the content of the β-stabilizing element Fe and combining it with refined forging and heat treatment processes, a Ti-Al-B titanium alloy with growth twins was prepared. Vacuum consumable melting, four-fire three-upsetting three-drawing reversing forging and triple annealing heat treatment processes were used to ensure the uniformity and performance matching of the material.

Benefits of technology

This significantly improves the strength and toughness balance of Ti-Al-B titanium alloys, resulting in alloys with superior overall performance suitable for applications such as marine engineering.

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Abstract

本发明公开了一种提高Ti‑Al‑B系钛合金锻件强韧匹配的方法,属于钛合金加工技术领域。针对Ti‑Al‑B系钛合金锻件强度和韧性匹配差的问题,采用增加β稳定元素Fe元素微合金化设计,提高了材料的强韧性匹配;采用三次真空自耗熔炼方法,保证钛合金铸锭成分均匀性;通过β和α+β相区四火次三镦三拔换向锻造,制备出厚度为120~150mm的锻件,保证了铸锭晶粒的充分破碎和锻件组织的均匀性;采用三重退火热处理工艺,保证了合金的组织均匀性和良好的强韧匹配性。
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