Crucial Microstructural Features to Determine the Mechanical Properties of Welded Joints in a Cu-Containing Low-Carbon Low-Alloy Steel After Postweld Heat Treatment

Wang, Jinliang; Dong, Guangqi; Li, Youchi; Xi, Xiaohui; Chen, Liqing

doi:10.1007/s11661-022-06768-1

Cited by 3 publications

References 35 publications

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Effect of Heat Input on Austenite Reversion, Recrystallization, and Ensuing Impact Toughness in Simulated Intercritical Coarse‐Grained Heat Affected Zone of Medium Mn Steel

Tao,

Yao,

et al. 2024

steel research int.

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A systematic experimental study has been conducted on the simulated intercritical coarse‐grained heat affected zone of 690 MPa grade heavy‐plate medium Mn steel by tailoring heat input of the first welding pass to obtain the influence of initial microstructure on the austenite reversion mechanism, recrystallization, and resultant impact toughness. Results reveal that prior austenite grain size significantly increases from 30 ± 11, 41 ± 14 to 54 ± 15 μm with the increasing heat input from 15, 30 to 50 kJ cm−1, which affect the nucleation site of reversed austenite, recrystallization mechanism, and final microstructure. Accordingly, impact toughness is better at the heat input of 30 kJ cm−1 (75.2 ± 0.8 J) in comparison with that of 15 kJ cm−1 (63.3 ± 13.3 J) and 50 kJ cm−1 (26.7 ± 6.5 J) at −40 °C, which is mainly ascribed to the formation of lamellar heterogeneous structures, multiplication of slip system and morphology of high‐angle grain boundaries.

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Effect of Heat Input on Austenite Reversion, Recrystallization, and Ensuing Impact Toughness in Simulated Intercritical Coarse‐Grained Heat Affected Zone of Medium Mn Steel

Tao,

Yao,

et al. 2024

steel research int.

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TiC-induced nanoscale Cu-rich re-precipitation mechanism under welding thermal cycles and its effect on the strength-toughness of heat affected zones

Fu,

Li,

et al. 2024

Journal of Materials Research and Technology

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Effect of Heat Input on the Austenite Reversion, Recrystallization and Ensuing Impact Toughness in Simulated Iccghaz of Medium Mn Steel

Tao

Yao

Gao

et al. 2023

Preprint

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Crucial Microstructural Features to Determine the Mechanical Properties of Welded Joints in a Cu-Containing Low-Carbon Low-Alloy Steel After Postweld Heat Treatment

Cited by 3 publications

References 35 publications

Effect of Heat Input on Austenite Reversion, Recrystallization, and Ensuing Impact Toughness in Simulated Intercritical Coarse‐Grained Heat Affected Zone of Medium Mn Steel

Effect of Heat Input on Austenite Reversion, Recrystallization, and Ensuing Impact Toughness in Simulated Intercritical Coarse‐Grained Heat Affected Zone of Medium Mn Steel

TiC-induced nanoscale Cu-rich re-precipitation mechanism under welding thermal cycles and its effect on the strength-toughness of heat affected zones

Effect of Heat Input on the Austenite Reversion, Recrystallization and Ensuing Impact Toughness in Simulated Iccghaz of Medium Mn Steel

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