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
Scanning electron microscopy and atom probe tomography characterization of laser powder bed fusion precipitation strengthening nickel-based superalloy
Siemens Energy, Finspång (SWE).
University West, Department of Engineering Science, Division of Subtractive and Additive Manufacturing. FEV Sverige AB, Trollhättan (SWE). (KAMPT)ORCID iD: 0000-0002-4087-6467
Department of Physics, Chalmers University of Technology, Gothenburg (SWE).
Siemens Energy, Finspång (SWE).
Show others and affiliations
2023 (English)In: Micron, ISSN 0968-4328, E-ISSN 1878-4291, Vol. 171, article id 103472Article in journal (Refereed) Epub ahead of print
Abstract [en]

Atom probe tomography (APT) was utilized to supplement scanning electron microscopy (SEM) characterizationof a precipitation strengthening nickel-based superalloy, Alloy 247LC, processed by laser powder bed fusion (LPBF). It was observed that the material in the as-built condition had a relatively high strength. Using both SEMand APT, it was concluded that the high strength was not attributed to the typical precipitation strengtheningeffect of γ’. In the absence of γ’ it could be reasonably inferred that the numerous black dots observed in thecells/grains with SEM were dislocations and as such should be contributing significantly to the strengthening.Thus, the current investigation demonstrated that relatively high strengthening can be attained in L-PBF even inthe absence of precipitated γ’. Even though γ’ was not precipitated, the APT analysis displayed a nanometer scalepartitioning of Cr that could be contributing to the strengthening. After heat-treatment, γ’ was precipitated and itdemonstrated the expected high strengthening behavior. Al, Ta and Ti partitioned to γ’. The strong partitioningof Ta in γ’ is indicative that the element, together with Al and Ti, was contributing to the strain-age crackingoccurring during heat-treatment. Cr, Mo and Co partitioned to the matrix γ phase. Hf, Ta, Ti and W were found inthe carbides corroborating previous reports that they are MC. 

Place, publisher, year, edition, pages
2023. Vol. 171, article id 103472
Keywords [en]
CM247LC, Superalloy, Additive manufacturing, atom probe tomography, Scanning electron microscopy, gamma prime
National Category
Manufacturing, Surface and Joining Technology
Research subject
Production Technology
Identifiers
URN: urn:nbn:se:hv:diva-20014DOI: 10.1016/j.micron.2023.103472ISI: 000999885100001PubMedID: 37146362Scopus ID: 2-s2.0-85154065448OAI: oai:DiVA.org:hv-20014DiVA, id: diva2:1761340
Available from: 2023-06-01 Created: 2023-06-01 Last updated: 2024-01-15Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textPubMedScopus

Authority records

Kumara, ChamaraAndersson, JoelHarlin, PeterPederson, Robert

Search in DiVA

By author/editor
Kumara, ChamaraAndersson, JoelHarlin, PeterPederson, Robert
By organisation
Division of Subtractive and Additive ManufacturingDivision of Welding Technology
In the same journal
Micron
Manufacturing, Surface and Joining Technology

Search outside of DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 234 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