Search for dissertations about: "EBSD"

Showing result 1 - 5 of 57 swedish dissertations containing the word EBSD.

  1. 1. Experimental Studies of Deformation Structures in Stainless Steels using EBSD

    Author : Karin Yvell; Annika Borgenstam; Peter Hedström; Göran Engberg; Johan Moverare; Högskolan Dalarna; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; EBSD; Austenitic stainless steels; Duplex stainless steel; In situ tensile test; Grain boundaries; Grain rotation; Grain size distribution; Texture; Strain hardening; Structure-property relationship; High strain rate; Wire rod rolling; Roll forming; Steel Forming and Surface Engineering; Stålformning och ytteknik;

    Abstract : In this thesis, the focus has been the study of deformation structures in stainless steels by using electron backscatter diffraction (EBSD). Via increased knowledge of the evolution of the substructure during deformation, the design and control of the manufacturing process can be improved. READ MORE

  2. 2. Use of EBSD Technique as a Means to Investigate the Microstructure of Engineering Materials

    Author : Muhammad Umar Farooq; Chalmers University of Technology; []
    Keywords : laser cladding; coronary stents.; strain induced phase transformation; EBSD; oligocrystalline structures; WC-Co;

    Abstract : AbstractMaterials Science and Engineering has the aim to design or engineer the structure of a material to produce a predetermined set of properties. To be able to understand and predict the properties and observable characteristics of engineering materials, it is therefore necessary to understand their microstructure. READ MORE

  3. 3. Study and empirical modelling of recrystallisation annealing of martensitic chromium steel strip by means of EBSD

    Author : Sorin Ionescu-Gabor; KTH; []
    Keywords : EBSD; Etching; Metallography; Cold Rolling; Recrystallisation annealing;

    Abstract : Recrystallisation annealing, a repeated heat treatment between different stages of cold rolling of martensitic chromium steel strip, is successful when neither high rolling forces nor wear of the working rolls occur during the subsequent cold rolling. Mechanical properties as tensile strength, yield, elongation or hardness have been, by tradition, the criteria that described the quality of the annealing process. READ MORE

  4. 4. Grain Size and Solid Solution Strengthening in Metals

    Author : Dilip Chandrasekaran; KTH; []
    Keywords : strengthening mechanisms; flow stress; solid solution strengthening; grain size strengthening; micromechanical modelling; AFM; EBSD;

    Abstract : The understanding of the strengthening mechanisms is crucialboth in the development of new materials with improvedmechanical properties and in the development of better materialmodels in the simulation of industrial processes. The aim ofthis work has been to study different strengthening mechanismsfrom a fundamental point of view that enables the developmentof a general model for the flow stress. READ MORE

  5. 5. Mechanisms of Plastic Deformation of Cemented Carbide and Cermet Cutting Tools

    Author : Gustaf Östberg; Chalmers University of Technology; []
    Keywords : SEM; cermets; TEM; plastic deformation; ab initio calculations; EFTEM; APFIM; FIB; cemented carbides; EBSD;

    Abstract : In this thesis, the physical mechanisms acting during plastic deformation of hardmetals used in metal cutting applications have been investigated. Microstructural and microanalytical studies have been performed on cemented carbides as well as cermet materials. READ MORE