Sökning: "Microstructural characterisation"

Visar resultat 6 - 10 av 17 avhandlingar innehållade orden Microstructural characterisation.

  1. 6. Microstructural, Mechanical and Tribological Characterisation of CVD and PVD Coatings for Metal Cutting Applications

    Författare :Mikael Fallqvist; Staffan Jacobsson; Mikael Olsson; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tribology; Friction; Wear; Coatings; CVD; PVD; Alumina; Metal cutting; Teknisk fysik med inriktning mot tribomaterial; Engineering Science with specialization in Tribo Materials; Steel Forming and Surface Engineering;

    Sammanfattning : The present thesis focuses on characterisation of microstructure and the resulting mechanical and tribological properties of CVD and PVD coatings used in metal cutting applications. These thin and hard coatings are designed to improve the tribological performance of cutting tools which in metal cutting operations may result in improved cutting performance, lower energy consumption, lower production costs and lower impact on the environment. LÄS MER

  3. 7. Development and microstructural characterisation of a new stainless maraging steel with unique material properties

    Författare :Anna Hultin Stigenberg; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 8. Microstructure and property models of alloy 718 applicable for simulation of manufacturing processes

    Författare :Marie Anna Moretti; Lars-Erik Lindgren; Paul Åkerström; Jörgen Kajberg; Bijish Babu; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material characterisation; Material modelling; Alloy 718; Plasticity; Recrystallization; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : This thesis focuses on experimental characterization, understanding and modelling of nickel-based alloy 718, for a large range of loading conditions. Alloy 718 is the most widely used nickel-based superalloy, due to its high strength, high corrosion resistance and excellent mechanical properties at high temperatures. LÄS MER

  5. 9. Effect of heat treatment on microstructure and mechanical properties of a 5 wt.% Cr cold work tool steel

    Författare :Arbab Rehan; Lars-Erik Svensson; Leif Karlsson; Anna Medvedeva; Per Erik Skogholm; Berne Högman; Reinhold Schneider; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cold work tool steel; Hardening; Tempering; Microstructural characterisation; Retained austenite; Martensite; Bainite; Hardness; Impact toughness; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : This work presents investigations related to phase transformations occurring inthe 5 wt.% Cr cold work tool steel Caldie during hardening and tempering treatments. LÄS MER

  7. 10. As-cast AZ91D magnesium alloy properties : Effects of microstructure and temperature

    Författare :Hoda Dini; Anders E.W. Jarfors; Nils-Eric Andersson; Jönköping University; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Magnesium; Magnesium Alloy; AZ91D; High-Pressure Die-Casting; Mechanical Property; Microstructural Characterisation; Physical Modelling; Dislocations; Distortion; Residual Stress; Magnesium; Magnesiumlegering; AZ91D; Pressgjutna; Mekanisk Egenskap; Mikrostrukturkarakterisering; Fysikalisk Modellering; Flytspänning; Dislokationer; Geometrisk Tolerans; Restspänning;

    Sammanfattning : Today, there is an essential need for lightweight, energy-efficient, environmentally benign engineering systems, and this is the driving force behind the development of a wide range of structural and functional materials for energy generation, energy storage, propulsion, and transportation. These challenges have motivated the use of magnesium alloys for lightweight structural systems. LÄS MER