Sökning: "Chromium Alloyed Steel"

Visar resultat 1 - 5 av 27 avhandlingar innehållade orden Chromium Alloyed Steel.

  1. 1. ROLE OF SURFACE OXIDES IN SINTERING OF CHROMIUM-ALLOYED STEEL POWDER

    Författare :Henrik Karlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; water atomisation; surface analysis; sintering; chromium-alloyed steel.; Powder metallurgy; surface reactions; surface; surface oxide; SEM; XRD; AES; XPS;

    Sammanfattning : During water-atomisation and handling of steel powder the surface inevitably oxidises. The surface bound oxide is an important factor in the processing of powder metallurgical (PM) steels, especially in case the powder contains elements forming stable oxides, such as Cr, Mn, and Si. LÄS MER

  3. 2. Studies of oxide reduction and nitrogen uptake in sintering of chromium-alloyed steel powder

    Författare :Ola Bergman; John Ågren; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; powder metallurgy; chromium; pre-alloying; surface oxides; sintering; Materials science; Teknisk materialvetenskap;

    Sammanfattning : The powder metallurgy (PM) process route is very competitive for mass production of structural steel components with complex shape, due to efficient material utilisation, low energy consumption, and short overall production time. The most commonly used alloying elements are the processing friendly metals Cu, Ni and Mo. LÄS MER

  4. 3. Precipitation reactions in highly alloyed martensitic steels

    Författare :Mats Hättestrand; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; creep resistance; 9-12% chromium steel; maraging steel; TEM; atom probe field ion microscopy;

    Sammanfattning : .... LÄS MER

  5. 4. Surface characterisation of water-atomised chromium-alloyed steel powder

    Författare :Henrik Karlsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : .... LÄS MER

  7. 5. Critical Aspects of High Performance Manufacturing of Structural Sintered Steel

    Författare :Sepehr Hatami; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Tool Steels; Modelling; Controlled Atmosphere; Wear Mechanisms; Sintering; Pressing Dies; Chromium Alloyed Steel;

    Sammanfattning : Steel is the dominant material for the production of structural parts. By means of powder metallurgy (PM) processing, manufacturers have been able to manufacture steel parts with appreciable dimensional accuracy and proper mechanical properties. LÄS MER