Abstract
The application of Ti–Pd–Ni high-temperature shape memory alloys to practical use is restricted due to their low critical stress for slip at high temperatures. About 0.2 at.% boron was added to a Ti50Pd30Ni20 alloy to improve its high-temperature mechanical properties including high-temperature shape memory characteristics. The influence of boron on martensitic transformation temperatures, microstructure and high-temperature mechanical properties was studied. The results show that TiB2 precipitates with an average size larger than 1 μm are produced in Ti50Pd30Ni19.8B0.2 alloy due to proper heat treatments described in the text. These TiB2 precipitates seem to be distributed within grains, rather than to segregate to grain boundaries. The addition of boron is beneficial to high-temperature ductility of Ti–Pd–Ni alloy. The addition of boron has no noticeable influence on high-temperature shape memory characteristics of Ti50Pd30Ni20 alloy, and the reason for this is discussed.
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.
