|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||2018 Technical Division Student Poster Competition
||SPG-29: The Effect of Co Content on Fabrication of Full-scale High-performance Alnico Magnets with Near-final Shape
||Emily Rinko, Liangfa Hu, Iver Anderson, Aaron Kassen, Emma White, Wei Tang, Lin Zhou, Matthew Kramer
|On-Site Speaker (Planned)
Existing results on the feasibility of fabricating near-final shape high performance alnico magnets are promising and we are now in the stage in which increased magnetic and mechanical properties must be developed. Two enhanced alnico alloys were designed using small cast samples for experimental convenience, a full-Co and a Co-lean composition, and both were gas atomized. Powder processing permitted the transition from small experimental samples toward full-scale, using binder-assisted compression molding and vacuum sintering to produce highly densified half-scale magnet shapes. Although full-Co magnets were successfully produced, the half-scale magnets consolidated from Co-lean powder fractured upon oil-quenching after solutionizing. A full investigation of the fractured Co-lean magnets was conducted in order to strategically move forward to mitigate the quench sensitivity of the less costly alnico magnet alloy, while simultaneously keeping its high-performance magnetic properties. Work supported by USDOE-OTT-TCF program with funds from EERE-VTO through Ames Lab contract no. DE-AC02-07CH11358.