Abstract
The strength-ductility trade-off of Ni3Al alloy is a significant factor that impacts its potential applications. This paper explores the application of a static magnetic field to enhance the microstructure and mechanical properties of Al-rich β (NiAl)/γ' (Ni3Al) two-phase Ni3Al alloy during directional solidification. The results revealed that the implementation of a 0.5 T magnetic field led to the formation of oriented NiAl particles with a single crystal Ni3Al composite structure. This novel composite structure exhibited higher yield strength (307.5 MPa), ultimate strength (525.6 MPa), and good ductility (8.2 %), surpassing the sample without a magnetic field by 13.7 %, 16.6 %, and 49 % respectively. These results indicate an excellent combination of strength and ductility. The synergetic improvement of strength and ductility can be primarily attributed to the particulate reinforcement effect and the maintenance of the so-called K–S orientation relationship, which enables dislocation transfer between the plastic γʹ-Ni3Al phase and the brittle β-NiAl phase. This study provides a promising strategy for obtaining desirable microstructures and properties by utilizing a magnetic field to form a composite structure.
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.
