The effect of multi-step austempering treatments on the microstructure and mechanical properties a novel medium carbon high silicon carbide-free bainitic steel was studied. Five different isothermal treatment processes were selected, including single-step above martensite start temperature (at 350 °C 370 °C, respectively), three kinds two-step routes (370 + 300 250 °C). In comparison with adopt...

Effect of retained austenite characteristics on V-bending in ultrahigh-strength TRIP-aided steel sheets with bainitic ferrite matrix (TBF steel) was investigated for automotive applications. tests were performed a servohydraulic testing machine at processing speed 1 mm/min using 88-degree V-punch (2.0 mm punch radius), V-die (12 die gap, 0.8 shoulder and rectangular specimen (50 length, 5 width...

Controlling the grain size of steels is an effective way for tailoring their mechanical properties, such as yield strength, impact toughness, and ductility. In this study, a new industrial thermomechanical treatment was applied to low-alloyed TRIP-assisted bainitic steel 13MnSiCr7 achieve substantial microstructural refinement. average micro-bainitic decreased from ∼25 μm ∼5 μm. Fatigue tests w...

Research & Development in Material Science Mechanical Behavior and Microstructural Correlations a TRIP Assisted Bainitic Steel JN Mohapatra*, Satish Kumar Dabbiru G Balachandran R D, JSW Ltd, Toranagallu-583275, India *Corresponding author:JN Mohapatra, Submission: July 28, 2022;Published: August 05, 2022 DOI: 10.31031/RDMS.2022.17.000916 ISSN: 2576-8840 Volume 17 Issue 4

Neural network predictions suggested that the strength of a high strength steel weldmetal with 7 wt-% nickel and 0.5 wt-% manganese could be increased significantly at moderate expense to impact toughness by additions of carbon. Based on this, three experimental weldmetals were produced with carbon contents between 0.03 and 0.11 wt-%. Mechanical test results were in agreement with predictions. ...