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Electron backscatte...
Electron backscatter diffraction characterization of fatigue crack growth in laser metal wire deposited Ti-6Al-4V
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- Åkerfeldt, Pia (författare)
- Luleå tekniska universitet,Materialvetenskap,Luleå University of Technology,Division of Materials Science, Luleå, Sweden,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)
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- Hörnqvist Colliander, Magnus, 1979 (författare)
- Chalmers University of Technology, Department of Physics, Göteborg, Sweden,Chalmers tekniska högskola
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- Pederson, Robert, 1973- (författare)
- Luleå tekniska universitet,Högskolan Väst,Avdelningen för svetsteknologi (SV),Luleå University of Technology,Division of Materials Science, Luleå, Sweden,PTW,Materialvetenskap,Department of Engineering Science, University West,University West,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)
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- Antti, Marta-Lena (författare)
- Luleå tekniska universitet,Materialvetenskap,Luleå University of Technology,Division of Materials Science, Luleå, Sweden,Luleå tekniska universitet (LTU),Luleå University of Technology (LTU)
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(creator_code:org_t)
- Elsevier BV, 2018
- 2018
- Engelska.
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Ingår i: Materials Characterization. - : Elsevier BV. - 1044-5803 .- 1873-4189. ; 135, s. 245-256
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- By additive manufacturing (AM) there is a feasibility of producing near net shape components in basically one step from 3D CAD model to final product. The interest for AM is high and during the past decade a lot of research has been carried out in order to understand the influence from process parameters on the microstructure and furthermore on the mechanical properties. In the present study laser metal wire deposition of Ti-6Al-4V has been studied in detail with regard to its fatigue crack propagation characteristics. Two specimen orientations, parallel and perpendicular to the deposition direction, have been evaluated at room temperature and at 250 °C. No difference in the fatigue crack growth rate could be confirmed for the two specimen orientations. However, in the fractographic study it was observed that the tortuosity varied between certain regions on the fracture surface. The local crack path characteristic could be related to the alpha colony size and/or the crystallographic orientation. Moreover, large areas exhibiting similar crystallographic orientation were observed along the prior beta grain boundaries, which were attributed to the wide alpha colonies frequently observed along the prior beta grain boundaries. © 2017 Elsevier Inc.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Bearbetnings-, yt- och fogningsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Manufacturing, Surface and Joining Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Annan materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Other Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
Nyckelord
- Aluminum; Aluminum alloys; Computer aided design; Crack propagation; Deposition; Fatigue crack propagation; Grain boundaries; Ternary alloys; Titanium alloys; Vanadium alloys
- 3D CAD Modeling; Crystallographic orientations; Electron back scatter diffraction; Fractographic; Fracture surfaces; Near-net-shape components; Process parameters; Specimen orientation
- Cracks
- Manufacturing and materials engineering
- Produktions- och materialteknik
- Materialteknik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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