Abstract
Impurity segregation at grain boundaries (GBs) can have a profound impact on the mechanical behavior of nanocrystalline metals. In this study, we employ atomistic simulations to investigate the effects of hydrostatic pressure on the GB segregation energy spectra in a series of binary alloy systems. Our results demonstrate that, depending on the alloy system, hydrostatic pressure can either enhance or hinder GB segregation tendencies. However, in specific alloys, such as AlMg and NiNb, hydrostatic pressure can also result in transitions in the preferred segregation sites, characterized by an initial increase followed by a decrease at certain pressures. The underlying mechanisms for these transitions can be attributed to the changes in the elastic component brought about by hydrostatic pressure, which dominate the other contributions to the total segregation energy.
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.