Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Comprehensive study on the formation of grain boundary serrations in additively manufactured Haynes 230 alloy
Fraunhofer Institute for Material and Beam Technology IWS, Dresden, Germany.
Fraunhofer Institute for Material and Beam Technology IWS, Dresden, Germany.
Fraunhofer Institute for Material and Beam Technology IWS, Dresden, Germany.
Fraunhofer Institute for Material and Beam Technology IWS, Dresden, Germany.
Vise andre og tillknytning
2020 (engelsk)Inngår i: Materials Characterization, ISSN 1044-5803, E-ISSN 1873-4189, Vol. 160, artikkel-id 110092Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Recently, grain boundary serrations have been introduced in conventionally processed Haynes 230 through a slow-cooling heat treatment. The aim of this work was to utilize these heat treatments to introduce serrations in additively manufactured (Laser Metal Deposition) Haynes 230. Contrary to expectations, serrations already formed during the fast-cooling of the Laser Metal Deposition process. Electron Backscatter Diffraction was used to elucidate the underlying phenomenon for the emergence of serrations during fast-cooling. As a result, a hypothesis regarding a new mechanism responsible for the formation of grain boundary serrations was formulated. Additionally, specific characteristics of the Laser Metal Deposition process have been identified. This includes a columnar-to-equiaxed transition (CET) for slower feed rates, leading to smaller grains despite lower cooling rates; the observation of an abrupt increase in grain growth for a raised solution annealing temperature; the fact that serrations hinder uncontrolled grain growth and finally that the LMD-process leads to a finer carbide morphology compared to conventional manufacturing methods, potentially leading to an increased precipitation strengthening effect.

sted, utgiver, år, opplag, sider
Elsevier, 2020. Vol. 160, artikkel-id 110092
Emneord [en]
Additive manufacturing, Laser metal deposition, Grain boundary serration, Superalloy, Haynes 230, EBSD
HSV kategori
Forskningsprogram
Produktionsutveckling
Identifikatorer
URN: urn:nbn:se:ltu:diva-77902DOI: 10.1016/j.matchar.2019.110092ISI: 000519655300028Scopus ID: 2-s2.0-85077398171OAI: oai:DiVA.org:ltu-77902DiVA, id: diva2:1401976
Merknad

Validerad;2020;Nivå 2;2020-04-03 (alebob)

Tilgjengelig fra: 2020-02-28 Laget: 2020-02-28 Sist oppdatert: 2020-04-03bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstScopus

Person

Brueckner, Frank

Søk i DiVA

Av forfatter/redaktør
Brueckner, Frank
Av organisasjonen
I samme tidsskrift
Materials Characterization

Søk utenfor DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric

doi
urn-nbn
Totalt: 75 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf