Elsevier

Scripta Materialia

Volume 176, February 2020, Pages 122-125
Scripta Materialia

Effects of transformation-induced plasticity on the small-scale deformation behavior of single crystalline complex concentrated alloys

https://doi.org/10.1016/j.scriptamat.2019.09.015Get rights and content

Abstract

We study the effects of transformation-induced plasticity (TRIP) on the micrometer-scale deformation of single crystalline pillars. Plastic deformation mechanisms (i) mediated by pure dislocation glide and (ii) strain-induced epsilon-martensite transformation are separated using compositionally complex model alloys. The results show that transformation-induced plasticity does not strengthen the single crystalline material at the micron-scale when loaded in uniaxial compression as compared to pure dislocation-mediated plasticity. The dynamically introduced phase boundaries effectively hinder the activation and propagation of secondary slip systems, resulting in no increase in local stress due to unobstructed slip on the primary slip system parallel to the phase boundary.

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Acknowledgments

W.S. Choi and P.-P. Choi acknowledge the support of National Research Foundation of Korea (NRF) (grant numbers 2018R1D1A1B07045549 and 2016R1A2B4012426). H.S. Oh and E.S. Park were supported by the National Research Foundation of Korea grant funded by the Korean government (Ministry of Science and ICT) (NRF-2018M3A7B8060601) and Institute of Engineering Research at Seoul National University, Korea.

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