The influence of ageing treatment on microstructure and mechanical properties of TB2 titanium alloy
- Paper number
IAC-13,C2,9,12,x17144
- Author
Mr. Xin Yang, China Academy of Space Technology (CAST), China
- Coauthor
Mr. Miao Wei, CAST, China
- Year
2013
- Abstract
Beta titanium alloy with extensive prospect in the field of aviation and aerospace has excellent mechanical performance,such as high os yield-strength,high of specific strength and specific stiffness.In aerospace field,some steel parts were replaced by TB2 titanium alloy,which effectively decreased the weight of space craft.The mechanical performance of titanium alloy mainly depends on aging treatment.In this paper,microstructure was investigated with optical microscopy,mechanical properties were tested by standard tensile tests,phase scale and texture were analyzed by X-ray diffraction (XRD).The results show that ageing treatment at 500℃ to 520℃ for 8 to 10 hour,the alloy has a better mechanical properties.Ageing treatment at 460℃ to 560℃,the phase consisted of alpha phase and beta phase,without other phase.Grain bounders become wider,plenty of alpha phase black spots which yield inside grains as ageing temperature increasing,the shape of alpha phase changed in turns:punctiform,spicule,lamellae and clump.
- Abstract document
- Manuscript document
(absent)