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。
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.
作者
李雪飞
黄利军
佟健博
颜孟奇
Li Xuefei;Huang Lijun;Tong Jianbo;Yan Mengqi(AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China;AECC Key Laboratory of Advanced Aeronautical Titanium Alloys,Beijing 100095,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2024年第12期103-106,共4页
Heat Treatment of Metals
