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Magnetostrictive performance of additively manufactured CoFe rods using the LENS (TM) system

TitleMagnetostrictive performance of additively manufactured CoFe rods using the LENS (TM) system
Publication TypeJournal Article
Year of Publication2018
AuthorsJones, NJ, Yoo, JH, Ott, RT, Lambert, PK, Petculescu, G, Simsek, E, Schlagel, D, Lograsso, TA
JournalAip Advances
Date Published05
Type of ArticleArticle; Proceedings Paper
ISBN Number2158-3226
Accession NumberWOS:000427579900183
Keywordsanisotropy, cobalt-iron alloys, Materials Science, physics, Technology - Other Topics

he Laser engineered net shaping (LENS (TM)) system to evaluate the performance of additively manufactured magnetic and magnetostrictive materials. The 76% Co sample showed an average magnetostriction (lambda) of 86 ppm at a stress of 124 MPa; in contrast, the 64% Co sample showed only 27 ppm at the same stress. For direct comparison, a Co67Fe33 single crystal disk, also measured as part of this study, exhibited a magnetostriction value of 131 and 91 microstrain in the [100] and [111] directions, respectively, with a calculated polycrystalline value (lambda(s)) of 107 microstrain. Electron back scattered diffraction (EBSD) has been used to qualitatively link the performance with crystallographic orientation and phase information, showing only the BCC phase in the 76% Co sample, but three different phases (BCC, FCC, and HCP) in the 64% Co sample. (C) 2017 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license.

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