Journal of Materials Science

, Volume 46, Issue 8, pp 2733–2740 | Cite as

Martensitic transition and structural modulations in Ni51Fe24Ga25 ferromagnetic shape-memory alloy

  • Z. W. Du
  • B. L. Shao
  • A. S. Liu
  • G. H. Wu
  • J. F. Qian
  • Z. Y. Zhang
  • Z. Gao


The structure of near-stoichiometric Ni51Fe24Ga25 Heusler alloy synthesized by a melt-spinning technique has been studied using transmission electron microscopy. The main phase possessed a local, well-defined L21 high-atomic order structure, and some fcc structural γ phase and lamellar twin structures were also present. At room temperature, a rich variety of micro-modulated domains in the parent phase was observed. The domain structures were aligned along the 〈110〉, 〈100〉, 〈211〉, and ~14° off 〈110〉 directions, resulting in a complex tweed contrast. These are possibly the precursors of martensitic transformation (MT). Below the MT temperature, Ms, the cubic parent phase transformed into modulated martensitic variants, which were composed of lamellar structures with predominantly 10 and 14 M modulated structures along the 〈110〉 directions.


Martensite Martensitic Transformation Select Area Electron Diffraction Pattern Parent Phase Heusler Alloy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work is supported by the National Science Foundation of China with Grant No. 50801007 and 50971130.


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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Z. W. Du
    • 1
  • B. L. Shao
    • 1
  • A. S. Liu
    • 1
  • G. H. Wu
    • 2
  • J. F. Qian
    • 2
  • Z. Y. Zhang
    • 3
  • Z. Gao
    • 4
  1. 1.General Research Institute for Nonferrous MetalsBeijingChina
  2. 2.State Key Laboratory for Magnetism, Institute of PhysicsChinese Academy of SciencesBeijingChina
  3. 3.Institute of Scientific and Technical Information of ChinaBeijingChina
  4. 4.Department of Materials Science and EngineeringBeijing University of Aeronautics and AstronauticsBeijingChina

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