Deformation twinning-induced dynamic recrystallization during laser powder bed fusion
نویسندگان
چکیده
Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature such twins, which are formed due high strain rapid solidification inherent LPBF. Dynamic recrystallization (DRX) also activated LPBF, and induced by deformation nanotwins. A thermostatistical model proposed determine critical conditions for twinning-induced DRX; validated reported experimental results. This modelling approach offers a method microstructurally engineer potential applications needing strength ductility.
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ژورنال
عنوان ژورنال: Scripta Materialia
سال: 2022
ISSN: ['1359-6462', '1872-8456']
DOI: https://doi.org/10.1016/j.scriptamat.2021.114307