Abstract
Hydrogen embrittlement (HE) of selective laser melting (SLM) 316 L stainless steel was investigated by tensile tests in the 80–300 K temperature range. The abnormal formation of strain-induced α′ martensite (SIM) at 300 K was attributed to the interaction between deformation twins and cellular sub-grains. Deformation twinning contributes greatly to HE at 300 K, resulting in hydrogen induced cleavage fracture along the twin boundaries. SIM forming at twin/twin and twin/grain boundary intersections further enhances the HE at slightly lower temperatures (273 K, 233 K). In contrast, hydrogen enhances the ductility of SLM316L by promoting the deformation twinning and SIM at 80 K.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: 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.