Sökning: "Metal and alloy"

Visar resultat 11 - 15 av 238 avhandlingar innehållade orden Metal and alloy.

  1. 11. Modelling of Forming and Welding in Alloy 718

    Författare :Lluís Pérez Caro; Mats Oldenburg; Eva-Lis Odenberger; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Forming; welding; Alloy 718; damage; GISSMO; failure; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : The reduction of fuel consumption and carbon dioxide emissions are currently a key factor for the aviation industry due to major concerns about climate change and more restrictive environmental laws. One way to reduce both fuel consumption and CO2 emissions is by significantly decreasing the vehicle’s weight while increasing engine's efficiency. LÄS MER

  3. 12. Laser Metal Deposition using Alloy 718 Powder : Influence of Process Parameters on Material Characteristics

    Författare :Andreas Segerstark; Joel Andersson; Lars-Erik Svensson; Boian Alexandrov; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Additive manufacturing; Laser metal deposition; Powder; Superalloy; Material characterization; Production Technology; Produktionsteknik; Manufacturing and materials engineering; Produktions- och materialteknik;

    Sammanfattning : Additive manufacturing (AM) is a general name used for manufacturing methods which have the capabilities of producing components directly from 3D computeraided design (CAD) data by adding material layer-by-layer until a final componentis achieved. Included here are powder bed technologies, laminated object manufacturing and deposition technologies. LÄS MER

  4. 13. Modelling Aspects in Forming and Welding of Nickel-Base Superalloys

    Författare :Lluís Pérez Caro; Mats Oldenburg; Eva-Lis Odenberger; Juan Carlos Cante Teran; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; alloy 718; Haynes 282; cold forming; hot forming; material characterization; GISSMO; welding; heat treatment; manufacturing chain; springback; shape distortions; dynamic strain aging; DSA; microstructure; Hållfasthetslära; Solid Mechanics;

    Sammanfattning : The reduction of fuel consumption and carbon dioxide emissions are currently a key factor for the aviation industry because of major concerns about climate change and more restrictive environmental laws. One way to reduce both fuel consumption and CO2 emissions is by significantly decreasing the weight of vehicles while increasing the efficiency of the engine. LÄS MER

  5. 14. Gas Metal Arc Melt Pool Modelling : Effect of welding position and electromagnetic force mode

    Författare :Pradip Aryal; Isabelle Choquet; Högskolan Väst; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gas metal arc welding; Gravitational force; Substrate orientation; Electromagnetic force modelling; Free surface deformation; Computational Fluid Dynamics; OpenFOAM; Gasmetallbågsvetsning; Gravitation; Svetsläge; Elektromagnetisk kraftmodellering; Smältytans rörelser; Computational Fluid Dynamics; OpenFOAM; Production Technology; Produktionsteknik;

    Sammanfattning : Gas metal arc is a high-efficiency and widely used heat source for metal processing applied predominantly in welding and additive manufacturing. In this study, it was applied to welding. LÄS MER

  7. 15. Control of Alloy Composition and Evaluation of Macro Inclusions during Alloy Making

    Författare :Yuichi Kanbe; Du Sichen; Leiv Kolbeinsen; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; slag metal reaction; equilibrium; kinetics; largest inclusion; statistics of extreme values; electrolytic extraction; cross section; inclusion morphology; Metallurgical process engineering; Metallurgisk processteknik;

    Sammanfattning : In order to obtain a good performance and predict the properties of alloys, it is necessary to control the contents of alloying elements and to evaluate a largest inclusion in the product. Thus, improved techniques for both control of alloy elements and evaluation of the large inclusion in products will enable us to provide better qualities of the final products. LÄS MER