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

Journal Article · · AIP Advances
DOI:https://doi.org/10.1063/1.5007673· OSTI ID:1436428
 [1];  [1];  [2];  [1];  [3];  [2];  [2];  [4]
  1. Naval Surface Warfare Center, Bethesda, MD (United States). Physical Metallurgy and Fire Protection Branch
  2. Ames Lab., Ames, IA (United States). Division of Materials Science & Engineering
  3. Univ. of Louisiana at Lafayette, Lafayette, LA (United States). Dept. of Physics
  4. Ames Lab., Ames, IA (United States). Division of Materials Science & Engineering; Iowa State Univ., Ames, IA (United States). Dept. of Materials Science and Engineering
Magnetostrictive materials exhibit a strain in the presence of a variable magnetic field. While they normally require large, highly oriented crystallographic grains for high strain values, metal additive manufacturing (3D printing) may be able to produce highly textured polycrystalline rods, with properties comparable to those manufactured using the more demanding free standing zone melting (FSZM) technique. Rods of Co75.8Fe24.2 and Co63.7Fe36.3 have been fabricated using the Laser engineered net shaping (LENSTM) system to evaluate the performance of additively manufactured magnetic and magnetostrictive materials. The 76% Co sample showed an average magnetostriction (λ) 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 (λs) 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.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1436428
Alternate ID(s):
OSTI ID: 1411804
Report Number(s):
IS-J--9625
Journal Information:
AIP Advances, Journal Name: AIP Advances Journal Issue: 5 Vol. 8; ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English

References (11)

Bulk Combinatorial Synthesis and High Throughput Characterization for Rapid Assessment of Magnetic Materials: Application of Laser Engineered Net Shaping (LENS™) journal April 2016
Giant magnetostriction in annealed Co1−xFex thin-films journal September 2011
Single Crystal Anisotropy and Magnetostriction Constants of Several Ferromagnetic Materials Including Alloys of NiFe, SiFe, AlFe, CoNi, and CoFe journal June 1959
The Joule Magnetostrictive Effect in a Group of Cobalt‐Iron Alloys journal November 1932
Magnetic Anisotropy and Magnetostriction of Ordered and Disordered Cobalt-Iron Alloys journal May 1960
Temperature dependence of the magnetostriction and magnetoelastic coupling in Fe100−xAlx (x=14.1,16.6,21.5,26.3) and Fe50Co50 journal April 2008
Deformation behavior and magnetostriction of polycrystalline Fe–Ga–X (X=B,C,Mn,Mo,Nb,NbC) alloys journal April 2008
Rhombohedral magnetostriction in dilute iron (Co) alloys journal May 2015
Thickness dependence of solid-state single crystal conversion in magnetostrictive Fe-Ga alloy from thin foil to thick sheet journal May 2017
Crystallographic texture engineering through novel melt strategies via electron beam melting: Inconel 718 journal October 2014
Site specific control of crystallographic grain orientation through electron beam additive manufacturing journal November 2014

Figures / Tables (2)


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