The effect of high-temperature thermomechanical treatment on the structural transformations and mechanical properties metastable austenitic steel AISI 321 type is investigated. features grain defect microstructure were studied by scanning electron microscopy with back-scatter diffraction (SEM EBSD) transmission (TEM). It shown that in initial state after solution average size 18 ?m. A high (?50...

Hot forming is an essential part of the manufacturing most steel products. The hot deformation behaviour determined by temperature, strain rate, and chemical composition steel. To date, constitutive models are constructed for many steels; however, their specific limits application. In this paper, a novel artificial neural network (ANN) model was built to determine flow stress with high accuracy...

The effect of thermomechanical treatment on the microstructure, tensile strength and impact toughness low-carbon low-alloy steel is considered. developed microstructure characterized by grain elongation along rolling direction. Both yield ultimate increase with a decrease in test temperature. at room temperature 797 MPa, 77 K increases to 1198 MPa. samples subjected tempforming exhibit KCV = 41...

One of the major challenges in welding aluminium (Al) alloys and steels is growth brittle intermetallic phases, which depends on thermomechanical processing history alloying elements. This work focuses phase layers formed roll bonded composites Al alloy 6082 stainless steel 316L after interdiffusion at temperatures range 400 – 550 °C. Scanning transmission electron microscopy characterisation s...