Search for dissertations about: "alloy formation"

Showing result 1 - 5 of 232 swedish dissertations containing the words alloy formation.

  2. 1. Decontamination of Mercury from Aqueous Systems via Electrochemical PtHg4 Alloy Formation

    Author : Vera Roth; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Mercury; Platinum; Alloy Formation; Electrochemistry; Mercury Removal;

    Abstract : Mercury is worldwide a severe heavy metal pollutant and a serious threat to human health and ecosystems. Mercury can be released into the environment by various natural processes; however, mercury pollution has been significantly amplified by human activities such as mining, production of fertilizers, waste incineration and disposal. READ MORE

  4. 2. ELECTRON BEAM MELTING OF ALLOY 718 - POWDER RECYCLING AND ITS EFFECT ON DEFECT FORMATION

    Author : Hans Gruber; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; powder recycling; electron beam melting; oxide defects; Alloy 718; defect formation; powder degradation; additive manufacturing; non-metallic inclusions;

    Abstract : As for any production process, the performance of additively manufactured components is ultimately dependent on the quality of the feedstock material. Consequently, for critical components, the feedstock needs to be carefully controlled to assure a stable and reliable quality. READ MORE

  5. 3. Rheocasting of Aluminium Alloys : Slurry Formation, Microstructure, and Properties

    Author : Mostafa Payandeh; A. E. W. Jarfors; Torbjörn Carlberg; Jönköping University; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SSM Casting; aluminium alloy; RheoMetalTM process; microstructure; physical and mechanical properties;

    Abstract : Innovative materials with novel properties are in great demand for use in the criticalcomponents of emerging technologies, which promise to be more cost-effective and energyefficient.A controversial issue with regard to manufacturing complex industrial products isto develop advanced materials with optimised manufacturability in addition to the requiredmechanical and physical properties. READ MORE

  6. 4. Powder bed fusion processing of Ni-base superalloys - Defect formation and its mitigation

    Author : Hans Gruber; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hot isostatic pressing; Ni-base superalloys; non-metallic inclusions; cracking; additive manufacturing; laser powder bed fusion; defect formation; Alloy 718; powder re-use; IN-738LC;

    Abstract : Powder bed fusion of Ni- and Ni-Fe-base superalloys is actively considered a promising manufacturing technology for critical components for the aerospace and industrial gas turbine industries. Such components often operate under harsh conditions, and hence, high demands are placed on both process and feedstock material to meet the strict safety and long-term reliability requirements. READ MORE

  7. 5. Aluminium alloy development for Additive Manufacturing

    Author : Freddy Leijon; Johan Moverare; Svain Skjervold; Ehsan Ghassemali; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Aluminium alloys; Alloy design; Powder bed fusion; Printability; Solidification cracking; Additive manufacturability; High through put methods; Heterogeneous nucleation;

    Abstract : Powder Bed Fusion (PBF Additive Manufacturing AM have emerged as a promising manufacturing process possessing a powerful combination of characteristics. Most noticeable are the near-net-shape, short lead time and flexibility, both with regard in design freedom and in part-to-part variation. READ MORE