Microstructure characteristics and mechanical performances of the dissimilar welded joint of Q&amp;P980 and Q&amp;P1180 steels subjected to the paint-baking heat treatment

Yang, Yonggang; Liu, Yu; Wei, Zhichao; Li, Ruizhi; Ma, Cheng; Mi, Zhenli

doi:10.1016/j.matchar.2023.113473

Materials Characterization

2024

DOI: 10.1016/j.matchar.2023.113473

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Microstructure characteristics and mechanical performances of the dissimilar welded joint of Q&P980 and Q&P1180 steels subjected to the paint-baking heat treatment

Yonggang Yang,

Yu Liu,

Zhichao Wei

et al.

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2024

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Cited by 4 publications

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The Effect of Bake Hardening on Quenched and Partitioned AISI 420 Stainless Steel

Raami,

Wendler,

Volkova

et al. 2024

steel research int.

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Bake hardening (BH) is a static strain aging phenomenon, where the yield strength of steel increases during industrial paint baking. In this study, the effect of standard BH treatment on the mechanical properties of a quenched and partitioned (Q&P) AISI 420 stainless steel is investigated. The parameters for the Q&P treatment are selected based on numerical simulations, dilatometry, X‐ray diffraction, and tensile tests, and the results are compared to conventional quenching and tempering (Q&T) treatment. It is shown that, in comparison with Q&T, Q&P can slightly increase the strength of the steel without sacrificing elongation. Heat‐treated samples are then subjected to a paint baking treatment with and without prestrain. It is indicated that the mechanical properties of the heat‐treated steel are not affected by paint baking without prestrain, whereas after a 2% prestrain the yield strength is drastically increased up to 1800 MPa, resulting in BH index exceeding 100 MPa. However, this increase in yield strength is instantly followed by necking and reduced post‐uniform elongation. The results suggest that the effect of industrial paint baking is a considerable practical aspect in the design of Q&P components if the steel is subjected to deformation before painting.

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The Effect of Bake Hardening on Quenched and Partitioned AISI 420 Stainless Steel

Raami,

Wendler,

Volkova

et al. 2024

steel research int.

View full text Add to dashboard Cite

show abstract

Microstructure and mechanical properties of the laser welded air-hardening steel joint

Fang,

Wu,

Yang

et al. 2024

Materials Characterization

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Role of arc rotational speed and post-weld heat treatment on the microstructure and mechanical characteristics of 15CDV6 HSLA steel weld joints made by spin arc GMAW

et al. 2024

Materials Today Communications

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Microstructure characteristics and mechanical performances of the dissimilar welded joint of Q&P980 and Q&P1180 steels subjected to the paint-baking heat treatment

Cited by 4 publications

References 37 publications

The Effect of Bake Hardening on Quenched and Partitioned AISI 420 Stainless Steel

The Effect of Bake Hardening on Quenched and Partitioned AISI 420 Stainless Steel

Microstructure and mechanical properties of the laser welded air-hardening steel joint

Role of arc rotational speed and post-weld heat treatment on the microstructure and mechanical characteristics of 15CDV6 HSLA steel weld joints made by spin arc GMAW

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