The residual compressive stresses and dimensional changes related to the lattice strains of retained austenite (RA) phase in a high-Si, medium-carbon steel (Fe-0.53C-1.67Si-0.72Mn-0.12Cr) are investigated for samples austenitized quenched isothermal bainitic transformation (Q&B) range 5 s 1 h at 350 °C. Also, directly water (DWQ) from austenitization temperature comparison with Q&B samples. Fie...

The boron-free S700MC steel is usually produced by exploiting the properties of a ferrite-bainite mixed microstructure formed coiling strips at temperature about 450?C, i.e.below bainite starting temperature. With aim further enhancing mechanical 6 to 10 mm thick strips, industrial tests were carried out 600?C promote formation structure ferrite and carbides, which also acceptable for this type...

Impurity elements of Cu, Ni, Sn and Cr have been added to a model low-carbon strip steel mimic the levels that could arise due increased scrap recycling during production. The microstructure tensile properties base composition impurity compositions after thermomechanical processing, consisting hot rolling simulated coil cooling, investigated. addition impurities results in lower bainite fractio...

The main goal of this paper is mathematical modelling and computer simulation isothermal decomposition austenite in steel. Mathematical nowadays becoming an indispensable tool for the prediction heat treatment results Besides that, can be applied understanding, optimization control microstructure composition mechanical properties Isothermal physically one most complex engineering processes. In ...

the unique properties of air-cooled bainitic steels have been described. a series of mn containing air-cooled bainitic steels invented by authors is presented in this paper: including low carbon granular bainitic steels, low carbon grain-boundary allotriomorphic ferrite/granular bainite duplex steels, medium and medium high carbon bainite/martensite duplex steel, and low carbon carbide free bai...

This study was conducted in order to investigate the influence of plastic deformation on the transformation of retained austenite in a TRIP steel with a high content of Al and a low content of Si. To the aim, appropriate treatments were used to produce the starting material (TRIP steel). The microstructure of the obtained steel was composed of bainite and phases including ferrite and retained a...

In this research the interface structure of dissimilar joint between AISI 4130 and AISI316L steels produced by GTAW process was evaluated. ERNiCr-3 was used as a filler metal for this joint. After welding the microstructure of different areas including weld metals, heat affected zones and interfaces were studied by optical microscope (OM), scanning electron microscope (SEM) and energy dispersiv...