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Journal of Applied Physics / Volume 107 / Issue 9 / ARTICLES / Structural, Mechanical, Thermodynamic, and Optical Properties of Condensed Matter

J. Appl. Phys. 107, 093505 (2010); http://dx.doi.org/10.1063/1.3402498 (6 pages)

Phase transformation of Mg–Fe alloys

Yasuhiro Yoneda1, Hiroshi Abe2, Takeshi Ohshima2, and Hirohisa Uchida3

1Synchrotron Radiation Research Unit, Japan Atomic Energy Agency, 1-1-1 Kouto, Sayo-cho Sayo-gun, Hyogo 679-5148, Japan
2Department of Material development, Japan Atomic Energy Agency, 1233 Watanuki, Takasaki, Gunma 370-1292, Japan
3Department of Applied Physics, Graduate and Undergraduate Schools of Engineering, Tokai University, 1117 Kitakaname, Hiratsuka, Kanagawa 259-1292, Japan

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(Received 14 December 2009; accepted 21 March 2010; published online 3 May 2010)

An Mg–Fe alloy system prepared through mechanical alloying (MA) was structurally analyzed. MA can produce single-phase bcc alloys using Mg concentrations up to about 15 mol %. Use of conventional average structure analysis and x-ray pair-distribution function method enabled the long-range and short-range order structures of the Mg–Fe alloys to be bridged. The substituted Mg atoms were randomly arranged in the low-Mg composition but started to have an order structure. The partially ordered Mg–Fe alloy undergoes an austenitic (cubic) to martensitic (orthorhombic) phase change, as increasing Mg composition.

© 2010 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. EXPERIMENTAL
  3. RESULTS
    1. Average structure
    2. Local structure
  4. DISCUSSION
  5. CONCLUSION

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KEYWORDS and PACS

Keywords

crystal structure, iron alloys, long-range order, magnesium alloys, martensitic transformations, mechanical alloying, short-range order, X-ray analysis

PACS

  • 81.05.Bx

    Metals, semimetals, and alloys

  • 81.30.Kf

    Martensitic transformations

  • 81.30.Hd

    Constant-composition solid-solid phase transformations: polymorphic, massive, and order-disorder

  • 61.66.Dk

    Alloys

  • 64.70.kd

    Metals and alloys

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3402498

PUBLICATION DATA

ISSN

0021-8979 (print)  
1089-7550 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

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