Search academic texts

Information × Registration Number 0223U001015, 0122U000970 , R & D reports Title Thermodynamics of multicomponent melts of transition metals as a scientific basis for the de-velopment of amorphous alloys. popup.stage_title Head Turchanin Mykhailo A., Доктор хімічних наук Registration Date 24-01-2023 Organization Donbass State Engineering Academy popup.description2 Subjects of investigations: liquid alloys of the Co–Cu–Hf, Co–Ti–Zr and Co–Ti–Hf systems, alloys and crystalline phases of the Co–Ti and Co–Hf systems. Objectives: experimental investigation of the mixing enthalpy of liquid alloys of the Co–Cu–Hf and Co–Ti–Zr systems at 1873 K and Co–Ti–Hf at 1900 K; theoretical modeling of temperature-concentration dependence of thermodynamic properties of Co–Cu–Hf, Co–Ti–Zr, and Co–Ti–Hf liquid alloys; development of a new thermodynamic assessment of the Co–Ti system and preparation of a data set for conducting a thermodynamic description of the Co–Hf system within the framework of the CALPHAD method. Methods: high-temperature calorimetry; modeling of thermodynamic properties of phases in the framework of mathematical models and models of the associated solution, CALPHAD-method for calculations of phase equilibria. Results: the mixing enthalpy of the liquid alloys of Co–Cu–Hf and Co–Ti–Zr systems at 1873 K and Co–Ti–Hf at 1900 K were experimentally investigated for the first time; the temperature-composition dependence of the thermodynamic properties of melts of the Co–Cu–Hf, Co–Ti–Zr, and Co–Ti–Hf systems was determined for the first time; within the framework of the CALPHAD method, a new thermodynamic assessment of the Co–Ti system was developed and a new version of the phase diagram of the system, coordinates of equilibrium nonvariant phase transformations, and thermodynamic properties of the system phases were calculated; data on the thermodynamic properties of liquid alloys, intermetallic compounds, and phase equilibria in the Co–Hf system are prepared for a new thermodynamic assessment of the system within the framework of the CALPHAD method. Range of application: investigations in the field of physicochemical theory of liquid alloys and phase equilibria; development of new technologies for the synthesis of amorphous and high entropy alloys; research and development in the field of chemical and physical materials science. Product Description popup.authors Agraval Pavlo G. Vodopyanova Anna O. Korsun Vladyslav A. Turchanin Mykhailo A. Usenko Nataliya I. popup.nrat_date 2023-01-24 Close