Martensitic transformation and magnetic ordering in as-cast Fe-Mn-Si-Ge and Fe-Mn-Si- Sn alloys
- 1 National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”, Kyiv, Ukraine.
Abstract
Crystal structure, morphology, peculiarities of martensitic transformation and shape memory effect were investigated in Fe-Mn-(Si,Ge) and Fe-Mn-(Si,Sn) as-cast alloys. It was found that regularly substitution of atoms Si with the Ge or Sn in Fe-Mn-Si alloys dramatically change the martensitic transformation behavior that displayed in calorimetry, resistometry and dilatometry curves during the cooling and heating the alloys. Crystal structure changed as well. As a result of alloying by Ge and Sn the substructure of samples became more inhomogeneous, well developed dendritic structure appeared, finally (Mn0.5Fe0.5)3Sn2 phase and hexagonal phase with the structure 63/ have precipitated in Fe-Mn-(Si,Sn) and Fe-Mn-(Si,Ge) respectively. The effect of alloying with Si or Ge on γ→ε temperatures of martensitic transformation, volume effect of transformation, Neel point caused by the influences of alloying components as well as the ferromagnetic phases appearing during as-cast process.
Keywords
References
- Sato A., Y. Yamaji, T. Mori, Physical properties controlling shape memory effect in Fe-Mn-Si alloys, Acta Metall, 34, 1986, 287.
- Jian Li, C.M. Wayman On the mechanism of the shape memory effect associated with γ(fcc) to ε(hcp) martensitic transformations in Fe-Mn-Si based alloys, Scr. Metall. Mat., 27(3), 1992, 279.
- Sato A., E. Chishima, Y. Yamaji, T. Mori Orientation and composition dependencies of shape memory effect in Fe-Mn-Si alloys, Acta Metall., 32, 1984, 539.
- Otsuka H. Fe-Mn-Si Based Shape Memory Alloys in: MRS Proceedings, 1991, 309.
- Yang J.H., Chen H, Wayman CM. Development of Febased shape memory alloys associated with face-centered cubic-hexagonal close-packed martensitic transformations, Metall.Trans. 23A, 1992, 1431.
- Otsuka H., Yamada H, Maruyama T, Tanahashi H, Matsuda S, Murakami M. Effects of alloying additions on Fe-Mn-Si shape memory alloys, I.S.I.J. Int., 30, 1990, 674.
- Gu Q., J. Van Humbeeck, L. Delaey, A review on the martensitic transformation and shape memory efect in Fe-Mn-Si alloys, J. de Physique IV, 04(C3), 1994, C3-135.
- Zhang Y., X. Tian, Z. Qin, H. Jiang, Temperature compensating Elinvar character in Fe–Mn–Si alloys, J. M.M.M., 324, 2012, 853.
- Zuoxiang Q., Y. Manping, Z. Yansheng, Neel transition and transformation in polycrystalline Fe-Mn-Si shape memory alloys, J. Mat. Sci., 31, 1996, 2311.
- Zhang Y.S. X. Lu, X. Tian, Z. Q., Compositional dependence of the Néel transition, structural stability, magnetic properties and electrical resistivity in Fe–Mn–Al–Cr–Si alloys, Mat. Sci. Eng.: A, 334(1-2), 2002, 19.
- Martinov V.V., L.G. Khandros, Fiz.Met and Metall., 39, 1975, 1037.
- Donner P., E. Hornbogen, Meltspun Iron based shape memory alloys, Praktischen metallographie, 26, 1989, 307.
- Olson G.B., M.S. Cohen, A mechanism for the strain-induced nucleation of martensitic transformations, J. Less-Common Metals., 28, 1972, 107.
- Stange M., H. Fjellvåg, S. Furuseth, B.C. Hauback, Crystal structure and phase relations for Mn3Sn2 and non-stoichiometric Mn2−XSn, J. All. Comp, 259(1-2), 1997, 140.
- M. Elding-Pontén, L. Stenberg, A.-K. Larsson, S. Lidin, K. Ståhl Three NiAs–Ni2In Type Structures in the Mn–Sn System, J. Sol. St. Chem., 129, 1997, 231.
- Hori T., H.Niida, Y.Yamaguchi, H.Kato, Y.Nakagawa Antiferromagnetic to ferromagnetic transition of D019 type (Mn1- xFeх)3Snl-, J.M.M.M., 90-91, 1990, 159.
- Recour Q., T. Mazet B. Malaman, Magnetic and magnetocaloric properties of Mn3−xFexSn2 (0.1 ≤ x ≤ 0.9), J. Phys. D: Appl. Phys. 41, 2008, 185002.
- Niida H., T.Hori,Y.Nakagaw, Magnetic properties of (Mn1-