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The research aims to determine the effects of tempering temperature on the microstructure and corresponding strength-toughness profiles of quenched steel plates.

February 26, 2026MetalsOpen Access

Effect of Tempering on Microstructure, Strength and Toughness Gradient in Quenched Low-Alloy Medium-Thickness Steel Plate

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The research aims to determine the effects of tempering temperature on the microstructure and corresponding strength-toughness profiles of quenched steel plates.
Conducted direct quenching of 25-mm steel plates from 900 °C to <150 °C.
Tempered at 530 °C or 580 °C for 1.5 hours.
Characterized microstructure and performed tensile and Charpy impact tests across different thicknesses.
Initial as-DQ state showed varied microstructure with up to 60% ferrite at the upper surface.
Tempering at 530 °C increased mid-thickness yield strength to 619 MPa and impact energy to 235.56 J.
Tempering at 580 °C resulted in limited yield improvement but increased surface yield strength.

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Implication

Experimental analysis reveals how tempering temperature alters microstructure and toughness in low-alloy steel plates, suggesting optimal processing techniques.

Cite This Study

Guan et al. (2026) studied this question.

synapsesocial.com/papers/699fe34695ddcd3a253e6f81 https://doi.org/10.3390/met16030243

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Implication

Experimental analysis reveals how tempering temperature alters microstructure and toughness in low-alloy steel plates, suggesting optimal processing techniques.

Effect of Tempering on Microstructure, Strength and Toughness Gradient in Quenched Low-Alloy Medium-Thickness Steel Plate

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Discussion

Implication

Cite This Study

Effect of Tempering on Microstructure, Strength and Toughness Gradient in Quenched Low-Alloy Medium-Thickness Steel Plate

Key Points

Discussion

Implication

Cite This Study

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