Relationship between Microstructure and Tensile Properties of in situ Synthesized (TiB+La2O3)/Ti Composite
The effects of α+β,β and TRIPLEX (oil and water quenching) heat treatment on the microstructure and tensile properties of in situ synthesized (TiB+La2O3)/Ti composite were studied. The phases were identified by X-ray diffraction. The microstructures and reinforcements of titanium matrix composite after h eat treatment were characterized by optical microscopy and transmission electron microscopy (TEM). The room and high temperature (600℃ ,650℃ or 700℃) tensile properties of the specimens were tested. The results showed that the microstructure of specimens after α+β heat treatment was bimodal,β heat treatment was Widmanstatten and TRIPLEX heat treatment was basketweave. The width of laminar α of TRIPLEX heat treatment with oil quenching was coarser than that of water quenching. Compared with β treatment, the room and high temperature ductility of titanium matrix composites after α+β and TRIPLEX treatment (oil and water quenching) improved significantly. Both TiB whiskers and La2O3 particles were stable after heat treatment.
Titanium matrix composite reinforcements heat treatment microstructure tensile properties
Weijie Lu Jiuxiao Li Liqiang Wang Jining Qin Yifei Chen Di Zhang
State Key Laboratory of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240,P. R. China
国际会议
The 12th World Conference Titanium(第十二届世界钛会 Ti-2011)
北京
英文
432-437
2011-06-19（万方平台首次上网日期，不代表论文的发表时间）