Sökning: "väteförsprödning"

Hittade 4 uppsatser innehållade ordet väteförsprödning.

  1. 1. Design of a test rig for in situ hydrogen charging of rolling element bearings under load

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Maskinelement

    Författare :Oskar Moström; [2023]
    Nyckelord :tribology; hydrogen embrittlement; mechanical engineering; rolling element bearing; machine elements; design; mechanical design; CAD; mechanical construction; construction; material science; Tribologie; Wasserstoffversprödung; Maschinenbau; Wälzlager; Maschinenelemente; Design; Maschinenkonstruktion; CAD; mechanischer Bau; Konstruktion; Materialwissenschaft; tribologi; väteförsprödning; maskinteknik; rullningselementlager; maskinelement; design; mekanisk design; CAD; mekanisk konstruktion; konstruktion; materialvetenskap; lager;

    Sammanfattning : This Master's thesis is part of the Hydrogen Embrittlement in Rolling element bearings project (HERo) initiated at Luleå University of Technology (LTU), with the primary objective of determining critical hydrogen concentrations in bearing steel for rolling element bearings. The specific aim of this Master's thesis is to design a test rig that enables the investigation of the effects of hydrogen embrittlement on rolling element bearings under load. LÄS MER

  3. 2. Effect of Proton Irradiation on the Mechanical Properties of Fe-10Cr-4Al in Liquid Lead

    Master-uppsats, KTH/Fysik

    Författare :Gabriela Lapinska; [2023]
    Nyckelord :Fe-10Cr-4Al; Lead; Radiation Damage; Slow Strain Rate Testing; Fe-10Cr-4Al; bly; strålskador; Slow Strain Rate Testing;

    Sammanfattning : Among the structural materials under consideration for future lead-cooled fastreactors, special attention is paid to ferritic Fe-10Cr-4Al due to its superior corrosionand erosion protective properties, as well as its insensitivity to liquid metalembrittlement in liquid lead. This thesis gives an inside look into the radiation damageproperties of the alloy and the possible embrittlement scenarios. LÄS MER

  4. 3. Influence of hydrogen on mechanical properties, microstructure and fracture surface of stainless steel 316L and stainless steel 304

    Uppsats för yrkesexamina på avancerad nivå, Blekinge Tekniska Högskola/Institutionen för maskinteknik

    Författare :Mustafa Adnan Tawfeeq Salman; [2020]
    Nyckelord :Hydrogen embrittlement; stainless steel; microstructure; hydrogen charging; slow and fast strain rate.; Väteförsprödning; rostfritt stål; mikrostruktur; väte laddning; långsam och snabb töjnings hastighet;

    Sammanfattning : Since hydrogen is an alternative energy source and has both economic and environmental benefits, it has received more attention. To use hydrogen a certain condition must be met, safe pressurized containers which are often made of metal. The metal isrequired due to the high mechanical strength and reasonable cost. LÄS MER

  5. 4. Reduction of hydrogen embrittlement on Electrogalvanized Ultra High Strength Steels

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för kemi - Ångström

    Författare :Adam Haglund; [2014]
    Nyckelord :hydrogen embrittlement; electrogalvanized; ultra-high strength steel; martensite; vacuum evaporation; decarburization; hydrogen relief treatment; väteförsprödning; elförzinkning; ultrahöghållfast stål; martensit; vakuumförångning; ytavkolning; väteutdrivning;

    Sammanfattning : Ultra-high strength steels is known to be susceptible for hydrogen embrittlement at very low concentrations of hydrogen. In this thesis three methods to prevent or reduce the hydrogen embrittlement in martensitic steel, with tensile strength of 1500 MPa, were studied. LÄS MER