Sökning: "Materialteknik"

Visar resultat 1 - 5 av 2764 avhandlingar innehållade ordet Materialteknik.

  1. 1. Aspects of precipitation in alloy Inconel 718

    Författare :Saied Azadian; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materialteknik; Engineering Materials;

    Sammanfattning : A study was made of the microstructure of the Ni-base alloy Inconel 718 with emphasis on the precipitation and stability of intermetallic phases as affected by heat treatments. In addition the effect of the precipitation on selected mechanical properties namely hardness, creep notch sensitivity and hot ductlity were investigated. LÄS MER

  3. 2. High-entropy boron-carbide and its composites

    Författare :Hanzhu Zhang; Farid Akhtar; Peizhong Feng; Yong Zhang; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Materials; Materialteknik;

    Sammanfattning : High-entropy alloy (HEA) is a multicomponent alloy material that contains five or more principal elements in equi- or near equi-atomic ratios. The entropy stabilisation leads to the formation of a crystalline solid solution accommodating the principal elements. LÄS MER

  4. 3. Synthesis of metallic/high entropy ceramic composite and a study of the phase transformation mechanism

    Författare :Hanzhu Zhang; Farid Akhtar; Peizhong Feng; Sheng Guo; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Engineering Materials; Materialteknik;

    Sammanfattning : .... LÄS MER

  5. 4. Microstructure of Carbon Fibres for Multifunctional Composites: 3D Distribution and Configuration of Atoms

    Författare :Marcus Johansen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; multifunctional composites; microstructure; synchrotron hard X-ray photoelectron spectroscopy; carbon fibres; energy storage; atom probe tomography; heteroatoms;

    Sammanfattning : Lightweight energy storage is a must for increased driving range of electric vehicles. “Mass-less” energy storage can be achieved by directly storing energy in structural components. LÄS MER

  7. 5. Heterogeneous deformation of multi-phase engineering materials - an in-situ neutron diffraction study

    Författare :Nitesh Raj Jaladurgam; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Eutectic high entropy alloys; in-situ neutron diffraction; Deformation mechanisms; Superalloys; Electron microscopy;

    Sammanfattning : Gas turbines are complex power generation systems used in aerospace or land-based-power stations. Materials such as Ni-base superalloys are involved in the combustion zone of these machines, which continuously experiences harsh environments with loading at high temperatures. LÄS MER