Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electron backscatter diffraction characterization of fatigue crack growth in laser metal wire deposited Ti-6Al-4V
Luleå University of Technology,Division of Materials Science, Luleå, Sweden.
Chalmers University of Technology, Department of Physics, Göteborg, Sweden.
University West, Department of Engineering Science, Division of Welding Technology. Luleå University of Technology,Division of Materials Science, Luleå, Sweden. (PTW)ORCID iD: 0000-0002-7675-7152
Luleå University of Technology,Division of Materials Science, Luleå, Sweden.
2018 (English)In: Materials Characterization, ISSN 1044-5803, E-ISSN 1873-4189, Vol. 135, p. 245-256Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
Elsevier Inc. , 2018. Vol. 135, p. 245-256
Keywords [en]
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
National Category
Manufacturing, Surface and Joining Technology
Research subject
ENGINEERING, Manufacturing and materials engineering
Identifiers
URN: urn:nbn:se:hv:diva-11917DOI: 10.1016/j.matchar.2017.11.041Scopus ID: 2-s2.0-85034988961OAI: oai:DiVA.org:hv-11917DiVA, id: diva2:1165722
Available from: 2017-12-13 Created: 2017-12-13 Last updated: 2017-12-28Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Authority records BETA

Pederson, Robert

Search in DiVA

By author/editor
Pederson, Robert
By organisation
Division of Welding Technology
In the same journal
Materials Characterization
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 128 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf