Search for dissertations about: "aluminum alloy"

Showing result 21 - 25 of 32 swedish dissertations containing the words aluminum alloy.

  2. 21. Properties of Al-Mg Alloys and Vacancies in Al: a First-Principles Investigation

    Author : Karin M. Carling; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Phase transformations such as precipitation are used to control the strength of many technologically important aluminum alloys. In precipitation hardening, the material is heat treated and aged to produce precipitates, small particles of a different phase, in the matrix. READ MORE

  4. 22. Statistical approaches to PM steel process improvements

    Author : Bjarne Bergquist; Alberto Molinari; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TECHNOLOGY; TEKNIKVETENSKAP; Kvalitetsteknik;

    Abstract : Increased performance:cost ratios for PM steel components is vital if current growth rate of market shares of such components versus competing technology is to be sustained. Both performance and cost of components are affected by variation of component properties. READ MORE

  5. 23. Geometrical Structure, Phase Diagrams, and Core-Level Binding Energiesof Metal Surfaces: Calculations, Simulations, and Experiments

    Author : Mikael Borg; Synkrotronljusfysik; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; adsorption; chemical shifts; low energy electron diffraction; Monte Carlo simulations; Condensed matter:electronic structure; electrical; magnetic and optical properties; Kondenserade materiens egenskaper:elektronstruktur; spectroscopy; relaxation; magnetic resonance; supraconductors; spektroskopi; magnetisk resonans; supraledare; egenskaper elektriska; magnetiska och optiska ; molecular vibrations; density functional theory; single crystal surfaces; core-level photoemission; metal surfaces; Fysicumarkivet A:2003:Borg;

    Abstract : This thesis concerns clean and adsorbate covered metal surfaces and surface alloys. These systems have been studied using theoretical and experimental methods. In the first part of the thesis, the different techniques that have been utilized in this work are presented, and the included publications are summarized. READ MORE

  6. 24. Optimization product parts in high pressure die casting process

    Author : Mohammad Sadeghi; Rebei Bel-fdhila; Dan Loyd; Mälardalens högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; industriell ekonomi och organisation; Industrial Economics and Organisations;

    Abstract : This thesis describes optimization of die temperature in high pressure die-casting (HPDC) of A380 alloy by experimental observation and numerical simulation with the use of statistical tools. The goal of this research is to determine the optimum die temperature to minimize incidence of these defects and thus maximize production of parts without defects. READ MORE

  7. 25. Material characterization of AA7075-T651 deformed at different temperatures and strain rates

    Author : Biswajit Dalai; Lars-Erik Lindgren; Paul Åkerström; Marta-Lena Antti; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hållfasthetslära; Solid Mechanics;

    Abstract : In this licentiate thesis, the mechanical response and the microstructure evolution in aluminum alloy (AA) 7075 in its T651 heat treated state have been studied through mechanical tests at varied conditions of strain rate and temperature.First, compression tests were performed on AA7075-T651 samples at room temperature (RT), 100, 200, 300, 400 and 500 °C (melting temperature of AA7075 is ~635 °C) with two comparatively low strain rates of 0. READ MORE