The superiority of NiMnSn alloy on NiMnGa alloy is far ahead in term of some physical characteristics, and therefore, the development of this alloy group is very important. In this work, Ni50Mn45−xSn5Crx magnetic shape memory alloys were produced for x = 0, 4, 6, 10 and 12. Thermal analysis was performed on produced alloys in a wide range (200–1000 °C) by using differential scanning calorimetry, thermogravimetric and differential thermal analysis. According to the thermal analysis results, the austenite ↔ martensite transformation temperatures of the NiMnSn alloy decreased with increasing chromium content. Furthermore, the increase in the chromium ratio caused single-phase transformation due to the multiple phase transformation that was observed in the NiMnSn alloy. In addition, the crystal structure and microstructure analyses of the alloys were determined by using X-ray diffraction and scanning electron microscopy–energy-dispersive X-ray spectroscopy. In all cases, martensite and gamma phase were encountered and the gamma phase ratio was found to be increased by chromium addition. The magnetization characteristics were studied by using physical properties measurement systems device, and it was found that the alloys have a considerably small response to magnetic flux.
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This work has been supported by the Management Unit of the Scientific Research Projects of Firat University (FUBAP) (Project No. FF.17.08). This article is derived from the Master thesis of Şeyda Burcu DURĞUN.
Zhou Z, Yang L, Li R, Li J, Hu Q, Li J. Martensite transformation, mechanical properties and shape memory effects of Ni–Mn–In–Mg shape memory alloys. Prog Nat Sci Mater. 2018;28(1):60–5.CrossRefGoogle Scholar
Yang S, Liu Y, Wang C, Lu Y, Wang J, Shi Z, et al. Microstructure and functional properties of two-phase Ni–Mn–Fe–In shape memory alloys with small transformation hysteresis width. J Alloys Compd. 2015;619:498–504.CrossRefGoogle Scholar
Feng Y, Sui J, Gao Z, Dong G, Cai W. Microstructure, phase transitions and mechanical properties of Ni50Mn34In16−y coy alloys. J Alloys Compd. 2009;476(1–2):935–9.CrossRefGoogle Scholar
Gao L, Cai W, Liu A, Zhao L. Martensitic transformation and mechanical properties of polycrystalline Ni50Mn29Ga21−xGdx ferromagnetic shape memory alloys. J Alloys Compd. 2006;425(1–2):314–7.CrossRefGoogle Scholar
Sozinov A, Likhachev A, Lanska N, Ullakko K. Giant magnetic-field-induced strain in NiMnGa seven-layered martensitic phase. Appl Phys Lett. 2002;80(10):1746–8.CrossRefGoogle Scholar
Marioni M, O’Handley R, Allen S, Hall S, Paul D, Richard M, et al. The ferromagnetic shape-memory effect in Ni–Mn–Ga. J Magn Magn Mater. 2005;290:35–41.CrossRefGoogle Scholar
Czaja P, Maziarz W, Dutkiewicz J. Microstructure evolution and its influence on martensitic transformation in Ni–Mn–Sn alloys. Inżynieria Materiałowa. 2013;34(3):149–52.Google Scholar
Wu Z, Liu Z, Yang H, Liu Y, Wu G, Woodward RC. Metallurgical origin of the effect of Fe doping on the martensitic and magnetic transformation behaviours of Ni50Mn40−xSn10Fex magnetic shape memory alloys. Intermetallics. 2011;19(4):445–52.CrossRefGoogle Scholar
Deltell A, Escoda L, Saurina J, Suñol JJ. Martensitic transformation in Ni–Mn–Sn–Co Heusler alloys. Metals. 2015;5(2):695–705.CrossRefGoogle Scholar
Sanchez-Alarcos V, Recarte V, Perez-Landazabal J, Chapelon J, Rodríguez-Velamazán J. Structural and magnetic properties of Cr-doped Ni–Mn–In metamagnetic shape memory alloys. J Phys D Appl Phys. 2011;44(39):395001.CrossRefGoogle Scholar
Schlagel D, McCallum R, Lograsso T. Influence of solidification microstructure on the magnetic properties of Ni–Mn–Sn Heusler alloys. J Alloys Compd. 2008;463(1–2):38–46.CrossRefGoogle Scholar
Xin Y, Li Y, Chai L, Xu H. Shape memory characteristics of dual-phase Ni–Mn–Ga based high temperature shape memory alloys. Scrip Mater. 2007;57(7):599–601.CrossRefGoogle Scholar
Prasad RVS, Phanikumar G. Amorphous and nano crystalline phase formation in Ni2MnGa ferromagnetic shape memory alloy synthesized by melt spinning. J Mater Sci. 2009;44(10):2553–9.CrossRefGoogle Scholar
Ma Y, Jiang C, Li Y, Xu H, Wang C, Liu X. Study of Ni50+xMn25Ga25−x (x = 2–11) as high-temperature shape-memory alloys. Acta Mater. 2007;55(5):1533–41.CrossRefGoogle Scholar
Chen F, Tong Y-X, Tian B, Li L, Zheng Y-F. Martensitic transformation and magnetic properties of Ti-doped NiCoMnSn shape memory alloy. Rare Met. 2014;33(5):511–5.CrossRefGoogle Scholar
Tan C, Tai Z, Zhang K, Tian X, Cai W. Simultaneous enhancement of magnetic and mechanical properties in Ni–Mn–Sn alloy by Fe doping. Sci Reprt. 2017;7:43387.CrossRefGoogle Scholar
Aydogdu Y, Turabi A, Aydogdu A, Kok M, Yakinci Z, Karaca H. The effects of boron addition on the magnetic and mechanical properties of NiMnSn shape memory alloys. J Therm Anal Calorim. 2016;126(2):399–406.CrossRefGoogle Scholar