This research work aims to study the effect of 2wt%Mo on bainitic transformation kinetics and bainite morphology in 0.6wt%C-1.2wt%Si-1.0wt%Mn-0.2wt%Cr steel. Specimens are austenitized at 950°C rapidly cooled salt bath isothermally treated between 200°C–300°C for different time intervals. Another set specimens oil after an austenitization treatment then tempered temperature range 200°C–550°C. I...

Bainite transformation behavior was monitored using simultaneous measurements of dilatometry and small angle neutron scattering (SANS). The volume fraction of bainitic ferrite was estimated from the SANS intensity, showing good agreement with the results of the dilatometry measurements. We propose a more advanced monitoring technique combining dilatometry, SANS and neutron diffraction.

It becomes possible in appropriate circumstances for similarly oriented plates of bainite or martensite to merge and form coarse crystallographically homogeneous domains whose presence leads to a deterioration in mechanical properties. A method is presented here for breaking up such domains, by introducing very small scale chemical composition variations in the austenite prior to its transforma...

Retained austenite is a key feature used to realize the transformation-induced plasticity in bainitic high strength steels. In this study, authors focused on formation of metastable Fe-0.61C-1.9Si-0.98Mn (mass%) during isothermal heating processes using situ neutron diffraction techniques. Quantitative discussion carbon partitioning enabled by applying an phase fraction analysis considering cry...

This work presents the results of comparison between simulations and experiments laser welding advanced multiphase steel. The numerical with different parameters were carried out using Sysweld software. geometry weld structural constituents as well stress distributions analyzed. simulated thermal cycles incorporated in JMatPro software to determine phase transformation kinetics during cooling. ...

The phase transformation behavior of nitrides-strengthened martensitic (NSM) heat resistant steel, showing excellent creep under 500°C, was studied in this article. results showed that during the heating procedure, formation austenite composed successively by intermetallic compound martensite, crystal structure shift from body-centered cubic (BCC) to face-centered (FCC), martensite/ferrite grai...