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Phase field approach for nanoscale interaction between crack propagation and phase transformation

Abstract

Phase field approach (PFA) to the interaction of fracture and martensitic phase transformation (PT) is developed, which includes change in surface energy during PT and the effect of unexplored scale parameter proportional to the ratio of the widths of the crack surface and the phase interface, both at nanometer scale. Variation of these two parameters causes unexpected qualitative and quantitative effects: shift of PT away from the crack tip, “wetting” of the crack surface by martensite, change in the structure and geometry of the transformed region, crack trajectory, and process of interfacial damage evolution, as well as transformation toughening. The results suggest additional parameters controlling coupled fracture and PTs.

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Publication details

The article was received on 13 Jul 2019, accepted on 25 Oct 2019 and first published on 06 Nov 2019


Article type: Communication
DOI: 10.1039/C9NR05960A
Nanoscale, 2019, Accepted Manuscript

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    Phase field approach for nanoscale interaction between crack propagation and phase transformation

    H. Jafarzadeh, V. I. Levitas, G. H. Farrahi and M. Javanbakht, Nanoscale, 2019, Accepted Manuscript , DOI: 10.1039/C9NR05960A

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