The weldability of GTD-111 nickel-based superalloy by pulsed Nd:YAG laser welding with an average power of 250 W was studied, and the microstructural evolution and cracking characteristics were also investigated. The solidification cracking of the fusion zone (FZ) and the intergranular liquation cracking in the heat affected zone (HAZ) were observed in the joint. Solidification cracking was cau...

Abstract The hot deformation behavior of a novel TNM-RE alloy (RE = Y, La, Ce) was studied using simulation machine (Gleeble-3800), and microstructural evolution also characterized. Finally, 3D forging carried out on isothermal equipment. It is shown that the as-cast lamellar colony size about 20 ∼ 30 μ m, which refined by formation rare Earth oxides borides at grain boundaries inhibiting growt...

The deformation behavior and microstructure of 25CrMo4 axle steel was systematically investigated by thermal compression deformation. hot-compression test a sample carried out on Gleeble-3800 mechanical simulation tester. flow the alloy studied at temperature (900–1200 °C), strain rates (0.01; 0.1; 1.0) s–1 maximum 60 %. curves under different conditions were obtained, effects rate appearance a...

The deformation behavior of lightweight Fe-35Mn-10Al-1C steel with an elevated concentration Mn was investigated. Hot compression tests at temperatures 950–1150 °C and strain rates 0.1–10 s−1 were carried out using the thermomechanical simulator, Gleeble 3800. Strain compensated constitutive model hot high accuracy (error 4.6%) has shown significant increases in effective activation energy (410...

In the last few years, demand for hot stamped components has increased in automotive industry. Determination of formability under stamping is challenging due to elevated temperature, fast cooling, and high punch velocity. Although there was various strive determination, but were limitations with experiments like non-uniform heating specimen, strain, temperature distribution. Therefore, this wor...

The relationship between microstructure and tensile properties of an Nb–Ti microalloyed X90 pipeline steel was studied as a function of finish rolling temperature using a Gleeble 3500 simulator, an optical and scanning electron microscope, electron back scattered diffraction (EBSD), a transmission electron microscope (TEM) and X-ray diffraction. The results indicate that the microstructure is p...

The deformation behavior and the constitutive description of materials are important in design numerical simulation manufacturing processes. In this work, rheological two quenchable boron steels was derived range interest for Press Hardening (PH) process. For study, following steps were performed: (i) Design specimen geometry adopted during hot tensile tests Gleeble®3180 physical simulator. (ii...