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Synergistic work hardening by rapid multiplication of dislocations in a multi-principal-element alloy

Nature Materials (2024)Cite this article

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In a multi-principal-element VCoNi alloy, premature necking during Lüders banding has been harnessed to produce rapid dislocation multiplication, leading to both forest hardening and hardening induced by regions of local chemical order. The result is ductility of 20% and a yield strength of 2 GPa, during room-temperature and cryogenic deformation.

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Fig. 1: Lüders band instability and rapid dislocation multiplication.

References

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This is a summary of: Xu, B. et al. Harnessing instability for work hardening in multi-principal element alloys. Nat. Mater. https://doi.org/10.1038/s41563-024-01871-7 (2024).

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Synergistic work hardening by rapid multiplication of dislocations in a multi-principal-element alloy. Nat. Mater. (2024). https://doi.org/10.1038/s41563-024-01891-3

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