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Carbon content-tuned martensite transformation in low-alloy TRIP steels.

ABSTRACT: Ultrahigh strength and good ductility are obtained for two low-alloy transformation-induced-plasticity steels fabricated by the quenching and partitioning (Q&P) processing, respectively. Compared to 0.19 wt.% C steel in which ?????'-martensite transformation is the dominant mechanism under deformation, the relatively high C content of austenite in 0.47 wt.% C steel is responsible for the transformation from ? to ?-martensite, suggesting that the transformation is not solely determined by the stacking fault energy. The study shows that during the Q&P process, strong and ductile steels with specific transformation procedures can be obtained by adjusting volume fraction and carbon content of the retained austenite.

SUBMITTER: Shen YF

PROVIDER: S-EPMC6525154 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Carbon content-tuned martensite transformation in low-alloy TRIP steels.

Shen Y F YF Dong X X XX Song X T XT Jia N N

Scientific reports 20190517 1

Ultrahigh strength and good ductility are obtained for two low-alloy transformation-induced-plasticity steels fabricated by the quenching and partitioning (Q&P) processing, respectively. Compared to 0.19 wt.% C steel in which γ → α'-martensite transformation is the dominant mechanism under deformation, the relatively high C content of austenite in 0.47 wt.% C steel is responsible for the transformation from γ to ε-martensite, suggesting that the transformation is not solely determined by the sta ...[more]

PMID: 31101836

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