Abstract
Abstract The cellular dislocation structure is an important microstructure aspect in fusion-based laser metal additive manufactured (MAM) parts. Its role in increasing strength and ductility at room temperature (298 K) is a known phenomenon. In this work, we have shown that the cellular dislocation structure not only improves the strength but also dramatically increases the mechanical stability of the austenite and retards the deformation-induced martensite transformation (DIMT) of austenite at cryogenic temperature (77 K). The delayed and slow rate of DIMT led to an enhanced strength-ductility synergy in the direct energy deposited and selective laser melted 316 L stainless steel samples at 77 K compared to the wrought processed samples. The current study establishes the capability of MAM technologies in controlling the DIMT behavior and realizing materials with high strength and ductility combination.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
