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Presentation
Mechanical properties of magnetostrictive iron-gallium alloys
Ames Laboratory Conference Papers, Posters, and Presentations
  • R. A. Kellogg, Iowa State University
  • Alan M. Russell, Iowa State University
  • Thomas A. Lograsso, Iowa State University
  • A. B. Flatau, University of Maryland - College Park
  • A. E. Clark, Clark Associates
  • Marilyn Wun-Fogle, United States Navy
Document Type
Conference Proceeding
Conference
Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics
Publication Date
8-12-2003
DOI
10.1117/12.484347
Geolocation
(32.7153292, -117.15725509999999)
Abstract
Single crystal specimens of Fe-17 at. % Ga were tested in tension at room temperature. Specimens with a tensile axis orientation of [110] displayed slip lines on the specimen faces corresponding to slip on the {110}with a critical resolved shear stress of 220 MPa. Yielding began at 0.3% elongation and 450 MPa. An ultimate tensile strength of 580 MPa was observed with no fracture occurring through 1.6% elongation. The Young"s modulus was 160 GPa in the loading direction with a Poisson"s ratio of -0.37 on the (100) major face. A specimen with a tensile axis orientation of [100] showed slip lines corresponding to slip on the {211}with critical resolved shear stress of 240 MPa. Discontinuous yielding began at 0.8% elongation, which was thought to result from twinning, kink band formation, or stress-induced transformation. The Young's modulus was 65 GPa in the loading direction with a Poisson"s ratio of 0.45 on the (001) major face. A maximum tensile strength of 515 MPa was observed with fracture occurring after 2% elongation. A sizeable elastic anisotropy of 19.9 was identified for Fe-27.2 at. % Ga accompanied by a Poisson's ratio of -0.75 to produce a large in-plane auxetic behavior.
Comments

Proc. SPIE 5053, Smart Structures and Materials 2003: Active Materials: Behavior and Mechanics, 534 (August 12, 2003); doi:10.1117/12.484347

Copyright 2003 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

http://dx.doi.org/10.1117/12.484347

Copyright Owner
Society of Photo Optical Instrumentation Engineers
Language
en
Citation Information
R. A. Kellogg, Alan M. Russell, Thomas A. Lograsso, A. B. Flatau, et al.. "Mechanical properties of magnetostrictive iron-gallium alloys" San Diego, CA(2003)
Available at: http://works.bepress.com/alan_russell/3/