摘要
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。
In this paper, the performance, structure and rolling process of TA2 titanium pipe with different oxygen 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 completely 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.
出处
《特钢技术》
CAS
2013年第2期19-22,共4页
Special Steel Technology
关键词
TA2钛管
氧含量
显微组织
力学性能
成品探伤合格率
TA2 titanium tube, Oxygen content, Microstructure, Mechanical properties, Flaw detection pass rateof finished product
