CAJ | 학술논문

　　研究不同氧含量TA2纯钛管材的性能、组织和轧制过程。结果表明，冷加工的TA2管材，在氧含量为0.06%~0.07%时，在500℃时室温力学性能满足飞机发动机要求，组织存在大部分加工组织流线，但当温度达到520℃时显微组织发生完全再结晶，不能满足要求，合格温度区间较窄，不建议选用；在氧含量为0.10%时，在500℃时开始发生再结晶，520℃~600℃热处理时材料组织为细小的再结晶组织，性能和组织趋于稳定，经520℃~550℃×90min FC处理后的管材组织和性能达到飞机发动机使用要求；经过增加内表面镗削处理的方法可以有效的去除氧含量为0.10%的管材在冷加工过程中产生的内表面缺陷，且并不影响成品超声探伤。
　　연구불동양함량TA2순태관재적성능、조직화알제과정。결과표명，랭가공적TA2관재，재양함량위0.06%~0.07%시，재500℃시실온역학성능만족비궤발동궤요구，조직존재대부분가공조직류선，단당온도체도520℃시현미조직발생완전재결정，불능만족요구，합격온도구간교착，불건의선용；재양함량위0.10%시，재500℃시개시발생재결정，520℃~600℃열처리시재료조직위세소적재결정조직，성능화조직추우은정，경520℃~550℃×90min FC처리후적관재조직화성능체도비궤발동궤사용요구；경과증가내표면당삭처리적방법가이유효적거제양함량위0.10%적관재재랭가공과정중산생적내표면결함，차병불영향성품초성탐상。
In this paper, the performance, structure and rolling process of TA2 titanium pipe with different oxy?gen content were studied.The results showed that when the oxygen content was between 0.06%and 0.07%, the me?chanical properties of the cold-worked TA2 tube met the requirements of aircraft engine at 500℃, and in most micro?structure processed structure flow-line could be seen;when temperature reached 520℃, the microstructure complete?ly recrystallized and the mechanical properties did not meet the requirements, so this narrow temperature range is not recommended;when the oxygen content is 0.10%, recrystallization occurred at 500℃. Fine structure was obtained af?ter heat treatment at 520~600℃and material performance and structure tended to stabilize;After the process of 520~550℃× 90min FC , the performance and structure of the tube met the requirements of aircraft engines;for TA2 tita?nium tube with the oxygen content of 0.10%, the inner surface defects generated in cold working process could be re?moved effectively by boring inner surface, while not affect the ultrasonic flaw detection of finished products.