Hongyuan FANG
,
Chenglei FAN
,
Jianguo YANG
,
Ming LI
,
Zhen LUO
,
Xianzhong HOU
材料科学技术（英）
A new type of compound conduit is designed and the finite element method (FEM) is applied to analyze the mechanical performance of a typical compound conduit. The results of the numerical simulation confirm that the distributions of the strain, stress and the flexure distortion of the conduit are reasonable under the working conditions, and the stress and strain are continuous at the interface of the crust and the pipe liner. The conduit can endure 7.4 times of the working load before break, which fits well with that of the experiment and means that the conduit has good ability to bear overload. The peak value of the flexure distortion of the conduit (6 m) is about 3 mm in the middle bottom of the pipeline, which also accords well with that of the experiment.
关键词:
Compound conduit
,
null
,
null
,
null
Hongyuan FANG
,
Jianguo YANG
,
xiuyu YU
材料科学技术（英）
Microstructure and interface reactions of Al2O3 joints brazed by Cu-Zn-Ti alloy were studied by using SEM, EDS and XRD. The effects of brazing temperature and Ti content on interfacial reactions and microstructure were investigated, and the action of adding Zn into brazing alloy was also studied. TiO, Ti3Al and CuTi were formed at the interface of ceramics and the filler metal, while CuTi, Cu3Ti and alpha -Cu were found in the brazing. The thickness of the reaction layer increased with increasing of brazing temperature, under the same brazing process, the thickness increased with the Ti content.
关键词:
