September 11, 2025steel research international

Microstructure‐Impact Toughness Evolution of Ultrahigh Strength Steel: Influence of Quenching and Secondary Low‐Temperature Tempering

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Impact toughness improved by 38.2% after secondary low-temperature tempering compared to single quenching.
Optimal mechanical properties achieved at 1020 °C austenitizing with 2239 MPa tensile strength and 1925 MPa yield strength.
Microstructural changes during quenching displayed smaller martensite laths and increased high-angle grain boundary density.
Heat treatment processes were enhanced by examining phase content, dislocation density, and carbide distribution.

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Implication

This analysis reveals how quenching and low-temperature tempering improve impact toughness in ultrahigh strength steel, indicating optimal heat treatment conditions.

Cite This Study

Zhang et al. (2025) studied this question.

synapsesocial.com/papers/68d43b02713b0b5dfea7aff1 https://doi.org/10.1002/srin.202500553

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Implication

This analysis reveals how quenching and low-temperature tempering improve impact toughness in ultrahigh strength steel, indicating optimal heat treatment conditions.

Microstructure‐Impact Toughness Evolution of Ultrahigh Strength Steel: Influence of Quenching and Secondary Low‐Temperature Tempering

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Discussion

Implication

Cite This Study

Microstructure‐Impact Toughness Evolution of Ultrahigh Strength Steel: Influence of Quenching and Secondary Low‐Temperature Tempering

Key Points

Discussion

Implication

Cite This Study

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