Journal
SCRIPTA MATERIALIA
Volume 147, Issue -, Pages 27-32Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2017.12.026
Keywords
Metastable stainless steel; Martensite; TRIP; Stacking fault; Partial dislocations
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Funding
- European Research Council within the ERC-advanced grant MULTIAX [339245]
- European Research Council (ERC) [339245] Funding Source: European Research Council (ERC)
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The effect of uniaxial/biaxial loading on the martensitic transformation of a low stacking fault energy, metastable austenitic stainless steel was studied by in-situ neutron diffraction on cruciform-shaped/dogbone samples. Uniaxial loading favors the martensitic transformation following the sequence gamma -> epsilon -> alpha', where at low strains epsilon-martensite is the precursor of alpha'. During equibiaxial-loading, the evolving texture suppresses the formation of 5-martensite and considerably less alpha'-martensite is observed at high strains. The results are discussed with respect to the deformation textures, the loading direction and the mechanism of the epsilon-martensite transformation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd.
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