Abstract
The effects of ageing at 773K for 3h on microstructure and superelastic behavior in B2-B19' thermoelastic martensitic transformations of Ni45.3Ti29.7Hf20Pd5 (аt%) single crystals were investigated in this study. Ageing introduced nanoscale H and H′ phase precipitates, which resulted in a decrease of B2-B19' transformation temperatures, a dispersion hardening of the B2 phase and a twofold increase in the superelasticity range (up to ΔТSE=200K) as compared with quenched crystals. In aged single crystals, reversible thermoelastic transformations with an extremely high critical stress level (σcr=1500MPa) and reversible strain up to 1.8% were obtained at elevated temperatures (450K).
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.
