Abstract
Alloys with a microstructure analogous to the γ/γ′ system of Ni-based superalloys are found in the Pt–Al system. A two-phase microstructure consisting of Pt3Al precipitates in an fcc (Pt) solid solution was developed to mimic the basic microstructure of Ni-based superalloys. The Pt3Al precipitates were found to consist of plates that are twin related and have a specific orientation relationship with respect to the matrix. Each plate contains a high density of thin platelets lying perpendicular to the c-direction. The precipitates were expected to crystallise in the D0′c unit cell. However, the experimental results showed that a different ordered structure, based on two modifications of the D0′c unit cell, occurred instead. The observed matrix/precipitate orientation relationship could be justified by misfit considerations.
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.
