How does step quenching affect the microstructure and properties of ferrite formed during heat treatment?
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Step quenching (SQ) plays a crucial role in influencing the microstructure and properties of ferrite during heat treatment. Research has shown that a well-planned SQ heat treatment, followed by an optimized quenching and partitioning (Q&P) cycle, can lead to the generation of advanced steel with a microstructure assisted by the TRIP effect . The kinetics characterization and thermodynamic modeling have demonstrated that the combination of SQ and Q&P can result in a high retained austenite fraction in a multiphase microstructure, enhancing the overall properties of the steel . Additionally, the study on NM450 wear-resistant steel revealed that the ductility and toughness of the material were significantly improved through the intercritical quenching process, impacting the microstructure and mechanical properties of the steel .
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| Step quenching improves the microstructure of ferrite in 24CrNiMo steel, enhancing properties like wear resistance and thermal fatigue performance, as observed in the study on selective laser melting-formed specimens. | |
2 Citations | Step quenching influences ferrite formation kinetics, enhancing retained austenite fraction. Combined with quenching & partitioning, it optimizes microstructure, potentially creating advanced steel with TRIP effect. |
| Step quenching influences ferrite formation kinetics, microstructure, and properties by optimizing austenite conditioning, leading to high retained austenite fractions and advanced steel microstructures with TRIP effect potential. | |
2 Citations | Step quenching below the martensite start temperature enhances the microstructure of low-carbon steel, increasing yield strength and hole expansion ratio by suppressing micro-void formation and forming tempered martensite, retained austenite, and bainitic ferrite. |
| Step quenching, involving heating to 880°C and air cooling to 850°C before quenching, enhances ductility and toughness of NM450 wear-resistant steel by improving ferrite proportion, impacting strength and toughness. |
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