Essays about: "Calphad method"

Found 5 essays containing the words Calphad method.

  1. 1. Ab inito calculation of the formation energy of the sigma phases at 1000 Kelvin : With a five sublattice model for the ternary Iron-Chromium-Nickel system

    University essay from KTH/Materialvetenskap

    Author : Fabian Mathias Veid; [2022]
    Keywords : ;

    Abstract : This project investigates the σ-phase formation energy at 1000 Kelvin using Exact Muffin TIn Orbital (EMTO) method and considers the disordered local moment approach to handle the paramagnetism in a self-consistent manner. The sigma phase is detrimental and causes embrittlement when it occurs primarily in stainless steel and superalloys with Iron (Fe) and Chromium (Cr), which is why it is necessary to understand it better and therefore avoid it. READ MORE

  3. 2. Calphad data handling for generic precipitation modelling coupled with FEM

    University essay from KTH/Materialvetenskap

    Author : Hans-Henrik König; [2020]
    Keywords : CALPHAD; Precipitation; Pycalphad; CuCo; Integrated Computational Materials Engineering; CALPHAD; Utskiljningskinetik; Pycalphad; CuCo; Integrated Computational Materials Engineering;

    Abstract : To enable a generic modelling tool for precipitation kinetics in non-homogeneous components, an efficient data-handling is required to facilitate the integration of models on different length scales, and to decrease the computational time and the use of resources. In this work an automated method to generate, curate and transform Calphad- based thermodynamic and kinetic data to facilitate precipitation models integrated in FEM codes is developed and tested. READ MORE

  4. 3. Heat Treatment and Secondary Phase Formation in FeCrNi Medium Entropy Alloys

    University essay from KTH/Materialvetenskap

    Author : Amanda Carsbring; [2020]
    Keywords : ;

    Abstract : The topics of high entropy alloys (HEA) and medium entropy alloys (MEA) have been heavily researched in recent years. A HEA usually consists of five or more base elements, and a MEA would have three or four base elements. READ MORE

  5. 4. Alternative binder phases for WC cemented carbides

    University essay from KTH/Materialvetenskap

    Author : Chunxin Liu; [2014]
    Keywords : Binder phase; cemented carbides; WC; Co;

    Abstract : WC cemented carbides are composites consisting of WC and a binder phase. WC/Co is widely used as cutting tools due to its excellent combination of hardness and toughness. This thesis work was performed at the R&D department of Sandvik Coromant and aimed to find the alternative binder phase to substitute cobalt. READ MORE

  6. 5. Theoretical and Experimental Study of the Co-Cr-Mo System

    University essay from KTH/Materialvetenskap

    Author : YiYao Lu; [2011]
    Keywords : Co-Cr-Mo system; Calphad method; Thermodynamic description;

    Abstract : The thermodynamic properties of the Co-Cr-Mo ternary system have been described. Available experimental data on the system have been assessed and applied to optimize the parameters used in the thermodynamic models within the Calphad method. READ MORE