Search for dissertations about: "martensitic transformation"

Showing result 21 - 25 of 34 swedish dissertations containing the words martensitic transformation.

  2. 21. 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

  4. 22. Elastic properties and phase stability of shape memory alloys from first-principles theory

    Author : Chun-Mei Li; Levente Vitos; Denis Music; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Construction materials; Konstruktionsmaterial;

    Abstract : Ni-Mn-Ga and In-Tl are two examples of shape memory alloys. Their shape memory effect is controlled by the martensitic transformation from the high temperature cubic phase to the low temperature tetragonal phase. Experimentally, it was found that the martensitic transformation, related to the elastic properties, is highly composition-dependent. READ MORE

  5. 23. Elastic properties and phase stability of shape memory alloys from first-principles theory

    Author : Chun-Mei Li; Levente Vitos; Bothina Hamad; KTH; []
    Keywords : TECHNOLOGY; TEKNIKVETENSKAP;

    Abstract :  Ni-Mn-Ga and In-Tl are two examples of shape memory alloys. Their shape memory effect is controlled by the martensitic transformation from high temperature face-centered-cubic (fcc) phase to the low temperature face-centered-tetragonal (fct) phase. READ MORE

  6. 24. Low Temperature Austenite Decomposition in Carbon Steels

    Author : Albin Stormvinter; Annika Borgenstam; John Ågren; Peter Hedström; John G. Speer; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Carbon steels; Electron backscattered diffraction; Martensite; Microscopy; Microstructure; Thermodynamic modeling;

    Abstract : Martensitic steels have become very important engineering materials in modern society. Crucial parts of everyday products are made of martensitic steels, from surgical needles and razor blades to car components and large-scale excavators. READ MORE

  7. 25. Modeling of material behavior in metal forming

    Author : Håkan Hallberg; Hållfasthetslära; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : With an increasing demand to improve efficiency and to cut costs, the industry is constantly seeking to reduce the time and money spent in product development and manufacturing. Use of computer-based simulations has become more or less a standard tool to meet this demand. READ MORE