Abstract
Abstract Rapidly solidified Ni3Al ribbons and wires are prepared to examine the relationship between antiphase domain (APD) structure and ductility. As-rapidly solidified ribbons of Ni-rich binary and ternary Ni3Al alloys show fine APD structure and exhibit no ductility, except for Ni-22Al-20Co. The ribbons annealed at temperatures higher than 1173 K, however, become ductile, although annihilation of APDs and grain growth occur. This indicates that ductility of Ni3Al ribbons is not directly related to APD structure but is determined by alloy composition. Melt-spun Ni3Al wires consist of a dendritic structure as usually seen in conventional castings, suggesting that the cooling rate during solidification of molten stream is not so high as to suppress the development of dendrites. It is found that the microstructure of the melt-spun Ni3Al wires is quite different from that of the rapidly solidified Ni3Al ribbons.
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.
