Effects of Sm on Phase Transformation in Ni-Mn-Ga Alloys


Guo Shihai~(1~*),Zhang Yanghuan~1,Zhao Zengqi,Qi Yan1,Quan Baiyun1,Wang Xinlin1(1.Department of Functional Material Research, Central Iron and Steel Research Institute, Beijing 100081, China; 2. Baotou Research Institute of Rare Earth, Baotou 014010, China)


The effects of small amount additions of Sm on the martensitic transition and magnetic phase transition of polycrystalline Ni-Mn-Ga alloys were investigated. The experimental results show that the Sm doped alloys also undergo a thermal-elastic martensitic transformation and reverse transformation during cooling and heating process and the addition of Sm decreases the martensitic transformation temperature and Curie temperature in different degree respectively. Ni-Mn-Ga alloys of adding Sm still possess Heusler structure, but their crystal lattice parameters are modified slightly. The addition of a proper amount of Sm does not basically decrease T_c of the alloy when avoiding the appearance of second phase. In addition, the doped alloys have favorable toughness because of grain refinement of Sm.


Ni-Mn-Ga alloy; shape memory alloy; martensitic transformation;ferromagnetic phase transformation;rare earths


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Total: 13 articles

  • [1] F. Gejima;;Y. Sutou;;R. Kainuma;;K. Ishida, Magnetic transformation of Ni 2 AlMn heusler-type shape memory alloys, Metallurgical and Materials Transactions A,
  • [2] CherechukinAA ;KhovailoVV ;KoposovRV ,etal, TrainingoftheNiMnFeGaferromagneticshape memoryalloysduecyclinginhighmagneticfield, J .Magn.Magn.Mater,
  • [3] UllakkoK ;EzerY ;SozinovA ,etal, Magnetic field in ducedstrainsinpolycrystallineNiMnGaatroomtemper ature, ScriptaMaterialia, Scripta Materialia (Scripta Materialia)
  • [4] WuGH ;WangWH ;ChenJL ,etal, Magneticproper tiesandshapememoryofFe dopedNi52Mn24Ga24singlecrystals, Appl.Phys.Lett, Applied Physics Letters (Applied Physics Letters)


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