Sökning: "grades 3-5"

Visar resultat 6 - 9 av 9 uppsatser innehållade orden grades 3-5.

  1. 6. Hydrogen-assisted stress corrosion cracking of high strength steel

    Master-uppsats, KTH/Materialvetenskap

    Författare :Rohollah Ghasemi; [2011]
    Nyckelord :Hydrogen assisted stress corrosion cracking; Hydrogen embrittlement; High strength steel; Slow Strain Rate Test;

    Sammanfattning : In this work, Slow Strain Rate Test (SSRT) testing, Light Optical Microscopy (LOM) and Scanning Electron Microscopy (SEM) were used to study the effect of microstructure, corrosive environments and cathodic polarisation on stress corrosion cracking (SCC) of two grades of high strength steels, Type A and Type B. Type A is manufactured by quench and tempered (Q&T) method. LÄS MER

  3. 7. Hydrogen-assisted stress corrosion cracking of high strength steel

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Rohollah Ghasemi; [2011]
    Nyckelord :Hydrogen embrittlement; hydrogen induced cracking; stress corrosion cracking; high strength steel; uniform corrosion; SSRT; hydrogen charging; fractography; hydrogen degradation;

    Sammanfattning : In this work, Slow Strain Rate Test (SSRT) testing, Light Optical Microscopy (LOM) and Scanning Electron Microscopy (SEM) were used to study the effect of micro-structure, corrosive environments and cathodic polarisation on stress corrosion cracking (SCC) of two grades of high strength steels, Type A and Type B. Type A is manufactured by quench and tempered (Q&T) method. LÄS MER

  4. 8. Hydrogen-assisted stress corrosion cracking of high strength steel

    Master-uppsats,

    Författare :Rohollah Ghasemi; [2011]
    Nyckelord :Hydrogen assisted stress corrosion cracking; Hydrogen embrittlement; High strength steel; Slow Strain Rate Test;

    Sammanfattning : In this work, Slow Strain Rate Test (SSRT) testing, Light Optical Microscopy (LOM) and Scanning Electron Microscopy (SEM) were used to study the effect of microstructure, corrosive environments and cathodic polarisation on stress corrosion cracking (SCC) of two grades of high strength steels, Type A and Type B. Type A is manufactured by quench and tempered (Q&T) method. LÄS MER

  5. 9.  Vilket kulturarv utvecklar den kulturella identiteten? :  En studie om hur historieämnet kan bidra till kulturell identitet

    Uppsats för yrkesexamina på avancerad nivå, Fakulteten för samhälls- och livsvetenskaper

    Författare :Ewa Johansson; [2010]
    Nyckelord :Cultural identity; intercultural competence; the subject of history; grades 3-5; Kulturell identitet; interkulturell kompetens; historieämnet; årskurs 3-5;

    Sammanfattning : Syftet med detta examensarbete var att undersöka hur undervisningen i historieämnet kan bidra till en interkulturell identitetsutveckling. Min målsättning var att utifrån lärarnas upplägg och metoder kunna dra slutsatser om hur lärare arbetar med den kulturella identiteten i historieämnet. LÄS MER