Abstract
The magnetic-field-induced strain (MFIS) is investigated in a directionally solidified Ni-Mn-Ga polycrystalline alloy. A 0.2% reversible MFIS is achieved after superelastic training, which is a large value as reported in polycrystalline samples without any external stress. Such prominent behavior is attributed to the oriented internal stress induced by superelastic training. On the basis of the phase-field simulation combined with experimental studies, the field induced strain behavior and the underlying microstructure evolution of Ni-Mn-Ga polycrystalline alloy are studied. The results show that the preferential orientation of martensite variants formed by the oriented internal stress is responsible for the large reversible MFIS. It is demonstrated that superelastic training would be an effective processing way to improve the MFIS in polycrystalline Ni-Mn-Ga alloys.
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.
