Sökning: "Mg-Si"

Hittade 4 uppsatser innehållade ordet Mg-Si.

  1. 1. Accurate Abundances of Giant Stars in the Local disk: A manual analysis of IR APOGEE spectra

    Master-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation; Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Ivalu Barlach Christensen; [2020]
    Nyckelord :Galactic Chemical Evolution; Astrophysics; Astronomy; IR Spectroscopy; Milky Way; Abundance; Physics and Astronomy;

    Sammanfattning : Purpose: In order to study the Galactic Chemical Evolution, elemental abundances are needed. The purpose of this work is to investigate the chemical evolution of the Milky Way by determining several elemental abundances of giants in the local disk. LÄS MER

  3. 2. High cycle fatigue properties of extruded 6060-T6, 6063-T6 and 6082-T6 : Influence of die lines and microstructure on fatigue in flat extruded aluminum profiles

    Master-uppsats, KTH/Materialvetenskap

    Författare :Sundström Robert; [2018]
    Nyckelord :fatigue; die lines; microstructure; extruded; extrusion; aluminum; aluminium; Al; AlMgSi; Al-Mg-Si; Mg-Si; Si-Mg; flat profile; 6xxx; 6000; utmattning; mikrostruktur; aluminium; aluminum; Al; AlMgSi; Al-Mg-Si; Mg-Si; Si-Mg; extrusion; extruderat; platt profil; 6xxx; 6000;

    Sammanfattning : Aluminum alloys are of great importance in the automotive and truck industries due to the weight savings that they can help to achieve. However, the use of such alloys in applications where they are subjected to alternating stresses requires knowledge about their fatigue behavior. LÄS MER

  4. 3. Forbidden oxygen in the Milky Way disk

    Kandidat-uppsats, Lunds universitet/Astronomi - Genomgår omorganisation

    Författare :Asma Sahli; [2017]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Oxygen is produced inside massive stars and dispersed into the interstellar medium mainly through type II supernovae explosions. This element, which is the third most abundant one in the Universe, plays an important role in tracing the Galactic chemical history and evolution. LÄS MER

  5. 4. Weld Quality in Aluminium Alloys

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Rujira Ninni Deekhunthod; [2014]
    Nyckelord :Weld Aluminium Alloys MIG MAG;

    Sammanfattning : The aims of this project are to present an understanding in what happens when aluminium-(Al) alloys are welded, and to investigate how the Mg-, Si- and Cr-contents in AA6005A influence the weld strength and cracking susceptibility. It is known that heat from welding affects the mechanical properties (strength) of the material. LÄS MER