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Wang H.-Q.,Hubei Sanjiang Aerospace Hongyang Electromechanical Co. | Bao C.-L.,Shenyang Research Institute of Foundry | Wang Y.-F.,Hubei Sanjiang Aerospace Hongyang Electromechanical Co. | Li D.-J.,Hubei Sanjiang Aerospace Hongyang Electromechanical Co. | And 4 more authors.
Zhuzao/Foundry | Year: 2015

To solve the problems existing in quality control of a thin-wall diamond skeleton titanium alloy casting, the filling and solidification process of the casting were simulated and analyzed on the basis of AnyCasting software. According to the numerical simulation results, proper gating system was designed and the casting process was optimized as well. Based on this study, finally qualified casting was successfully prepared by graphite mould casting method with optimized parameters. ©, 2015, Chinese Mechanical Engineering Society. All right reserved. Source


Dong J.,Beijing Institute of Technology | Dong J.,Beijing FSW Technology Co. | Nie X.,Hubei Sanjiang Aerospace Hongyang Electromechanical Co. | Yan J.,Hubei Sanjiang Aerospace Hongyang Electromechanical Co. | And 4 more authors.
Hanjie Xuebao/Transactions of the China Welding Institution | Year: 2013

Friction-stir welding (FSW) of 6082 aluminum alloy was welded by conventional FSW and bobbin-tool FSW. Microstructure and mechanical performance of the as-prepared joints samples were examined. Some inside-out onion rings can be observed in the cross section of bobbin-tool FSW joints samples in microstructure analysis. Microstructure of nugget and TMAZ are obviously different, which shows the evolution of the microstructure. The results indicate that the general mechanical properties of samples prepared by conventional FSW are better than that by bobbin-tool FSW. Sample prepared by bobbin-tool FSW has a finer average grain size than that by conventional FSW. The cavities in the fracture appearance of bobbin-tool FSW joint sample are shallower and there are some smooth platform which are similar to the quasi-cleavage crack near these cavities. While the deeper cavities can be observed in the fracture appearance of conventional FSW joint sample. The lowest hardness point of bobbin-tool AA 6082 FSW joint sample is located in the TMAZ, and hardness in the upper WNZ zone is the highest. Source

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