Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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
In situ alloying and reinforcing of Al6061 during selective laser melting
Show others and affiliations
2018 (English)In: Procedia CIRP, ISSN 2212-8271, E-ISSN 2212-8271, Vol. 74, p. 39-43Article in journal (Refereed) Published
Abstract [en]

This work investigates the feasibility of a novel method to simultaneously alloy and reinforce a low alloyed Al alloy (i.e., Al6061) during selective laser melting (SLM) via in situ decomposition of zinc oxide (ZnO). Based on Gibbs free energy calculations, an Al6061+6wt%ZnO powder mixture is designed and prepared. The thermal decomposition of ZnO, resulting in the formation of Al oxide and free Zn, simultaneously alloys and reinforces the Al matrix. This also provides extra thermal energy that alters the dynamics of the melt pool and necessitates a completely different set of optimised SLM parameters compared to traditional Al alloys. After SLM, it is shown that this method can successfully reinforce the Al matrix with numerous nanometer sized oxide particles (typically ~ 50-120 nm). Despite this clear success to manufacture in situ reinforced Al composites by SLM, the applied method could not avoid partial Zn evaporation (limiting in situ alloying) and could not successfully suppress the cracking that also occurs after SLM of unreinforced Al6061.

Place, publisher, year, edition, pages
2018. Vol. 74, p. 39-43
Keywords [en]
alloying, reinforcing, Aluminium alloy, Metal matrix composites, Laser processing, Powder metallurgy, Microstructure
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-251579OAI: oai:DiVA.org:kth-251579DiVA, id: diva2:1334973
Note

QC 20190827

Available from: 2019-07-03 Created: 2019-07-03 Last updated: 2019-08-27Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

http://www.sciencedirect.com/science/article/pii/S2212827118307923

Search in DiVA

By author/editor
Dadbakhsh, Sasan
In the same journal
Procedia CIRP
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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