Toughening effect of delta-ferrite in a modified PH13-8Mo steel

Qiu, Zanlin; Sun, Feng

doi:10.1016/j.matlet.2021.130652

Cited by 10 publications

(1 citation statement)

References 15 publications

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“…Precipitation-strengthened ferritic/martensitic steel driven by coherent NiAl-based precipitates with a B2 BCC matrix has attracted considerable attention [1][2][3]. High density of nano-coherent precipitates with low misfit strains enhances steel strength [4,5].…”

Section: Introductionmentioning

confidence: 99%

Controlling the nucleation of multiple precipitates in precipitation-strengthened steel through Mo partitioning

Qiu

Shen

Zuo

et al. 2022

Materials Science and Technology

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In this study, atom probe tomography and first-principles calculations were used to investigate the influence of Mo addition on multiple precipitates, including isolated NiAl-based precipitates as well as NiAl-based and Cu-rich co-precipitates, in high-strength ferritic steel. The co-NiAl-based precipitates were experimentally confirmed to be nucleated from the abundance of Cu atoms. The addition of Mo accelerated the nucleation process of Cu-rich precipitates and structural transformation of co-precipitates, led to a considerable increase in the nucleation rate of NiAl-based precipitates, and slightly promoted isolated NiAl-based precipitates. The results were discussed from the perspective of lattice misfits and mixing enthalpy.

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