Search for dissertations about: "PHASE-TRANSFORMATIONS"

Showing result 1 - 5 of 71 swedish dissertations containing the word PHASE-TRANSFORMATIONS.

  2. 1. Modeling of phase transformations and cyclic plasticity in pearlitic steels

    Author : Björn Andersson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Phase transformations; TRIP; Pearlitic steel; FEM; Cyclic plasticity; Homogenization;

    Abstract : The low rolling resistance in railway transportation is a key factor for its high efficiency, but it comes at the price of very high contact pressure between the rail and wheel. Due to the high stresses and the large number of load cycles during railway operation, both the rail and the wheel can be susceptible to fatigue crack initiation and propagation. READ MORE

  4. 2. Simulation of Phase Transformations and coarsening : Computational tools for alloy development

    Author : Johan Jeppsson; John Ågren; Gerhard Inden; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materials science; Teknisk materialvetenskap;

    Abstract : The final properties of an alloy are highly interlaced with its microstructure. It is therefore essential to control the evolution of the microstructure of the material during the fabrication process. Nowadays, materials design involves an increasing part of computational design to complement the traditional experimental trial and error approach. READ MORE

  5. 3. Computational tools for simulation of phase transformations

    Author : Mikael Schalin; KTH; []
    Keywords : ;

    Abstract : A new software package, Thermite, for thermodynamiccalculations and process simulation is developed around theThermo-Calc databank. Thermite is a computational toolbox forequilibrium calculations and simulation of phasetransformations. It provides graphic visualisation and allowsmanipulation of the presented data. READ MORE

  6. 4. Laser-induced phase transformations in microalloyed steels

    Author : Handika Sandra Dewi; Alexander Kaplan; Joerg Volpp; William O´Neill; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Produktionsutveckling; Manufacturing Systems Engineering;

    Abstract : The application of thermal cycles below melting temperature can induce solid-to-solid phase transformation in steels, which is the transition between different crystalline structures of the same compound. There are many types of crystalline structures in steels produced, depending on the characteristics of the applied thermal cycle. READ MORE

  7. 5. Phase-field modeling of diffusion controlled phase transformations

    Author : Irina Loginova; KTH; []
    Keywords : phase-field; dendritic growth; grain boundary; Widmanstaetten plate; solidification;

    Abstract : Diffusion controlled phase transformations are studied bymeans of the phase-field method. Morphological evolution ofdendrites, grains and Widmanst\"atten plates is modeled andsimulated.Growth of dendrites into highly supersaturated liquids ismodeled for binary alloy solidification. READ MORE