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EFFECT OF HEATING RATE AND MICROSTRUCTURAL

was based on previous work [11,12] for similar initial microstructures for continuous heating and isothermal heat-treatments. The goal of the diffusion simulations was to evaluate the austenitization and austenite homogenization kinetics, and to provide further understanding of the austenite composition development as a function of heating rate. Effect of Heat Treatment Process on Microstructure Aug 28, 2020 · The results show that the microstructure of 45Mn2 bainitic steel after quenching is lower bainitic ferrite + residual austenite + M/A. When the austenitizing temperature increases, the volume fraction of residual austenite and M/A increases, and the hardness and abrasion resistance first increase and then decrease.

Effect of austenite grain size on the bainitic ferrite

heat treatment can dissolve most of the Nb precipitates, prolonging the duration of the heat treatment can result in a larger PAGS without greatly changing the Nb precipitate dissolution status. In addition, changing the rough deformation (strain1) also has little influence on the Nb precipitate dissolution status simply due to the high temperature Pearlite Transformation - an overview ScienceDirect Topics1 Isothermal Austenite-to-pearlite Transformation. The effect of temperature on the austenite-to-pearlite transformation kinetics is shown in Fig. 1 for a eutectoid ironcarbon alloy containing 0.76 wt.%C. As the transformation temperature is decreased from 675 to 600 °C, the pearlite reaction is accelerated with both nucleation and growth rates increasing. Stability of Retained Austenite in High-Al, Low-Si TRIP Apr 06, 2011 · Abstract. Two galvanizable high-Al, low-Si transformation-induced plasticity (TRIP)assisted steels were subjected to isothermal bainitic transformation (IBT) temperatures compatible with the continuous galvanizing (CGL) process and the kinetics of the retained austenite (RA) to martensite transformation during room temperature deformation studied as a function of heat treatment

Effect of Heat Treatment Conditions on Retained Austenite

Jul 29, 2019 · Effect of Heat Treatment Conditions on Microstructure and Retained Austenite. The globular primary Cr-V carbides present in the annealed bar partially solubilize during austenitizing leading to a 25% amount reduction after high austenitizing temperature and 22% reduction after low austenitizing temperature (Fig. 3). As a consequence, samples austenitized at high temperature have a higher amount of carbon and alloying elements in the matrix respect to those austenitized