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of NiTi-X-Shape Memory Alloys V.Prieb "MFS-Büro Dr. Prieb", Berlin, DE "Materials Sciences Transactions", 6(2000)12, p.p. 12-15 Abstract: Polycrystalls of NiTi-based shape memory alloys with a third component X (X = Au, Pt, Pd or Al) were examined with calorimetric measurements to investigate the thermodynamic parameters and characteristics of the hysteresis of the thermoinduced martensitic transformation. All known sequences of transformations of NiTi-based shape memory alloys were observed. The enthalpy and entropy of the martensitic transformations B2-R, R-B19' and B2-B19 were measured and calculated. The smallest dissipative characteristics are found for the transformations B2-B19 with invariant plane. The SMART effect in partial thermocycles was investigated and discussed. More about this in my monograph, published in November 2020: "The concept of dual-energetic martensite (CODEM) for shape memory phenomena", PDF-file |