Abstract
Fe-37 at.% Al-15 at.% Mo has an equilibrium two-phase structure consisting of an ordered B2 (FeAl-based) matrix with Mo 3Al as the second phase. Rapid solidification by chill-block melt-spinning suppresses the formation of the Mo 3Al phase, giving instead single phase B2-FeAl supersaturated with Mo and containing a network of faults revealed by TEM. Imaging with B2 superlattice reflections revealed an anisotropic antiphase domain contrast while imaging with fundamental (b.c.c.) reflections showed typical stacking fault or thin precipitate contrast for the same faults. The faults were identified as a/2〈111〉{100} type B2 antiphase boundaries. It is proposed that the formation of such anisotropic and non-conservative antiphase boundaries is related to the retention of excess Mo within the B2 matrix by rapid solidification.
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.
