BT16钛合金紧固件加工工艺分析

Process Analysis of BT16 Titanium Alloy Fastener

摘要:

分析了不同规格俄制BT16钛合金自锁螺母显微组织、流线和显微硬度，并与俄制该合金φ8min丝材进行对比。研究结果表明：BT16钛合金紧固件显微组织为单相区变形获得的超细片状组织；其组织形态与退火态丝材一致，表明紧固件是在退火状态下直接使用的，未经过固溶时效强化处理；BT16钛合金紧固件采用了冷变形制造工艺。

Abstract:

Microstructure, streamline and Microhardness of different size BTI6 locknuts have been analyzed and compared with 08 mm thread made of BT16. The results show that the microstructure of BT16 fastener is lamellar type with very fine grain size, which may be obtained by deformed starting in beta field. Microstructure of fastener is very similar with that of thread in annealing state, which show that the fastener is used in annealing state without solution and aging treatment. Streamline and hardness analyses show that fastener is deformed in cold condition.