Due to the large size and complicated features, brake discs of high-speed trains are difficult forge, so a reasonable design process die parameter prerequisites for successful forming. The flow stress 23CrNiMoV, forged-steel disc material trains, was investigated by uniaxial compression experiment on Gleeble 1500 test machine. Based obtained flow-stress data, series numerical simulation analyse...

The study addresses the effect of magnesium and other alloying elements on rolling “?-fiber” texture formation during hot deformation aluminum alloys. For study, flat cast ingots from three alloys with variable content were deformed in a Gleeble testing unit different parameters thermomechanical treatment. Immediately after completion deformation, samples quenched using an automatic cooling sys...

The effect of heat input on the microstructure and mechanical properties TiC cermet in MIG welding has been comprehensively investigated by Gleeble simulation. microstructure, phase composition shear fracture were examined OM (optical microscopy), SEM (scanning electron microscope), TEM (transmission microscope) XRD (X-ray diffraction) analyses. results show that a significant cermet. With part...

In order to investigate the hot deformation behaviors of Invar36 alloy, isothermal compressive tests were conducted on a Gleeble 1500 thermo-mechanical simulator at temperatures 873, 948, 1023, 1098 and 1173 K strain rates 0.01, 0.1, 1 10 s−1. The effects strain, temperature rate flow stress analyzed, dynamic recrystallization type softening characteristic with unimodal behavior is determined. ...

Recrystallization kinetics and two critical temperatures—the non-recrystallization temperature TNR the static recrystallization TSRCT—of five Nb, Ti, V microalloyed steel grades are evaluated. The experimental examination is realized by employing isothermal double-hit compression tests continuous hot torsion tests, both performed on a Gleeble® 3800 thermo-mechanical simulator. results used for ...

In the present work, the isothermal compression tests of Al–0.62Mg–0.73Si aluminum alloy were carried out by using the Gleeble-1500D thermo-simulation machine. The samples were tested in the temperature range of 410–510°C and strain rate range of 0.001–1 s−1. Based on the obtained stress–strain curves, the hot deformation behavior was presented. The constitutive relationship of Al–0.62Mg–0.73Si...

20Mn5 steel is widely used in the manufacture of heavy hydro-generator shaft forging due to its strength, toughness, and wear resistance. However, the hot deformation and recrystallization behaviors of 20Mn5 steel compressed under a high temperature were not studied. For this article, hot compression experiments under temperatures of 850-1200 °C and strain rates of 0.01 s-1-1 s-1 were conducted...

During the continuous casting process, a nonstationary stress state forms in the metal, which is caused by a non-uniform temperature distribution, phase transitions, and the deformation of the stock in a semi-liquid state. Stresses occur also as a results of ferrostatic pressure and the deflection and straightening of the continuous casting. In addition to these phenomena, intensive processes o...