金属热处理 ›› 2024, Vol. 49 ›› Issue (12): 103-106.DOI: 10.13251/j.issn.0254-6051.2024.12.018

• 工艺研究 • 上一篇    下一篇

加热温度和保温时间对Ti1023钛合金再结晶行为的影响

李雪飞1,2, 黄利军1,2, 佟健博1,2, 颜孟奇1,2   

  1. 1.中国航发北京航空材料研究院, 北京 100095;
    2.中国航发先进钛合金重点实验室, 北京 100095
  • 收稿日期:2024-09-27 修回日期:2024-11-09 出版日期:2024-12-25 发布日期:2025-02-05
  • 作者简介:李雪飞(1989—),男,高级工程师,硕士,主要研究方向为高强高韧钛合金,E-mail:lixuefeiavic@163.com

Effects of heating temperature and holding time on recrystallization behavior of Ti1023 titanium alloy

Li Xuefei1,2, Huang Lijun1,2, Tong Jianbo1,2, Yan Mengqi1,2   

  1. 1. AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China;
    2. AECC Key Laboratory of Advanced Aeronautical Titanium Alloys, Beijing 100095, China
  • Received:2024-09-27 Revised:2024-11-09 Online:2024-12-25 Published:2025-02-05

摘要: 通过对Ti1023钛合金在两相区进行70%的锻造变形,并将其进行785~885 ℃保温30~300 min的热处理,观察分析不同加热温度和不同保温时间下变形组织的回复和再结晶规律。结果表明,Ti1023钛合金在两相区变形后,在800 ℃以下保温时,变形组织以发生回复为主,再结晶为辅,保留了变形后的组织形态,再结晶晶粒未发生长大。在800~885 ℃保温时,变形组织以发生再结晶为主,回复为辅。当加热温度一定时,随着保温时间延长,再结晶晶粒会发生长大;当保温时间一定时,加热温度越高,完成再结晶所需要的时间越短,晶粒长大的趋势越明显,再结晶晶粒长大不利于变形组织的细化。

关键词: Ti1023钛合金, 回复, 再结晶, 晶粒长大

Abstract: By forging 70% deformation of the Ti1023 titanium alloy in the two-phase region and heating at 785-885 ℃ for 30-300 min, the recovery and recrystallization law of the deformed microstructure under different heating temperatures and holding time were observed and analyzed. The results show that after the deformation of the Ti1023 titanium alloy in the two-phase region, the deformed microstructure is dominated by recovery when the heating temperature below 800 ℃, supplemented by recrystallization, the microstructure retains the deformed morphology, and the recrystallized grains don't grow. When heated at 800-885 ℃, the deformed microstructure is dominated by recrystallization, supplemented by recovery. When the heating temperature is constant and the holding time is prolonged, the recrystallized grains grow. When the holding time is constant, the higher the heating temperature, the shorter the time required to complete recrystallization, and the more obvious the trend of grain growth. The recrystallized grain growth is not conducive to the refinement of the deformed microstructure.

Key words: Ti1023 titanium alloy, recovery, recrystallization, grain growth

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