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L. Pang - One of the best experts on this subject based on the ideXlab platform.

Qiu Shan - One of the best experts on this subject based on the ideXlab platform.

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Yanguo Li - One of the best experts on this subject based on the ideXlab platform.

  • numerical simulation of flash butt welding of high Manganese Steel crossing with carbon Steel rail
    Advanced Materials Research, 2010
    Co-Authors: Yanguo Li, Fucheng Zhang
    Abstract:

    A flash butt welding model of a high Manganese Steel crossing was established using the thermal coupled finite element method (FEM). The model considers comprehensively the physical parameters of materials, which change with temperature, as well as the burning material caused by the splutter during welding process. The temperature field of the flash butt welding joint and the cooling curves of the high Manganese Steel crossing at various locations near the welding seam were simulated. Comparisons with actual welding specimens of high Manganese Steel crossing indicated that flash butt welding model of the high Manganese Steel crossing is reasonable, and the temperature field distribution near the welding seam after flash butt welding can thus be appropriately evaluated by the simulation results.

  • flash butt welding of high Manganese Steel crossing and carbon Steel rail
    Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2007
    Co-Authors: Fucheng Zhang, Bo Lv, Baitao Hu, Yanguo Li
    Abstract:

    Abstract This study sets out to introduce the flash butt welding of high Manganese Steel crossing and carbon Steel rail by employing an austenite–ferrite two-phase stainless Steel insert. There are two flash butt welded joints for the connection of the high Manganese Steel and the carbon Steel rail, one is the welded joint of the carbon Steel and the stainless Steel, and the other is that of the high Manganese Steel and the stainless Steel. The mechanical properties and the microstructures of the welded joint are studied by means of static bending, three bend-fatigue and metallographic for the practical rail. There is no carbide precipitation on the austenitic grain boundary in the HAZ of the high Manganese Steel crossing subjected to jetting water cooling after the flash butt welding, and there is no martensitic transformation in the HAZ of the carbon Steel rail subjected to annealing treatment by a special induction heat treatment device, which will avoid the brittleness of the welded joint effectively. The welded joint of the carbon Steel rail and the stainless Steel insert is annealed at 900 °C for 10 min, which will release the residual stress of the welded joint and thus enhance the strength of the welded joint. It is indicated that the flash butt welding of the high Manganese Steel crossing and the carbon Steel rail via the austenite–ferrite two-phase stainless Steel insert is feasible.