Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 812, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.152061
Keywords
Quenched and partitioned steel; Micro-pillar compression; Retained austenite; Martensitic transformation; Focused ion beam
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Funding
- Intramural NIST DOC [9999-NIST] Funding Source: Medline
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We report evidence of a displacive phase transformation from retained austenite to martensite during preparation of quenched and partitioned steel micro-pillars by using a focused ion beam (FIB) technique. The BCC phase produced by the FIB damage was identified as martensite. The invariant-plane strain surface relief associated with the martensitic transformation was observed in the retained austenite phase immediately after a FIB scan of the surface with the Ga+ ion beam. Use of a low acceleration voltage appears to lower the probability of the phase transformation, while a decrease of the acceleration voltage will result in an increase of the total milling time required to prepare a micro-pillar. This report addresses challenges related to the preparation of austenite micro-pillars by a conventional FIB technique. Published by Elsevier B.V.
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