Development of Fe-Ga-Al based alloys with large magnetostriction and high strength by precipitation hardening of the dispersed carbides

Toshiya Takahashi, Teiko Okazaki, Yasubumi Furuya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

(Feo80Ga0.15Al0.05)99X 0.5C0.5 [at.%] (X=Zr, Nb and Mo) alloys were developed in order to enhance the magnetostriction as well as strength by carbide reaction X.-C. Carbide precipitation phases of XC were observed by XRD and laser-microscope in the arc-melted alloys. As a result, (Feo80Ga 0.15Al0.05)99Zr0.5C0.5 alloys showed maximum magnetostriction λmax=134ppm and its tensile strength σB=832MPa. These alloys showed a transgranular fracture. It will be considered to cause the increase of strength due to the precipitation of carbide. Before now, the polycrystalline Galfenol with such a high tensile strength more over 800MPa as well as large magnetostriction over 100 ppm has not yet been reported.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings - Materials and Devices for Smart Systems III
Pages175-180
Number of pages6
Publication statusPublished - 2009 Nov 20
Externally publishedYes
EventMaterials and Devices for Smart Systems III - 2008 MRS Fall Meeting - Boston, MA, United States
Duration: 2008 Dec 12008 Dec 4

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1129
ISSN (Print)0272-9172

Other

OtherMaterials and Devices for Smart Systems III - 2008 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period08/12/108/12/4

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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