Til hovedinnhold

Dispersoid strengthening in AA3xxx alloys with varying Mn and Si content during annealing at low temperatures,

Dispersoid strengthening in AA3xxx alloys with varying Mn and Si content during annealing at low temperatures,

Kategori
Vitenskapelig artikkel
Sammendrag
The precipitation behaviour of dispersoids in Direct Chill (DC)- cast 3xxx alloys with varying compositions of manganese and silicon has been studied during isothermal annealing at low temperatures. The evolution of density, size and volume fraction of the dispersoids has been quantitatively studied by Transmission Electron Microscopy (TEM) and electrical conductivity measurements. Moreover the influence of precipitation of dispersoids on hardness and tensile strength of the alloys is systematically investigated. A clear dispersion hardening effect from dispersoids is revealed and the hardening effect increases with increasing Mn and Si contents in the alloys. The hardening effect from dispersoids is discussed in light of the Orowan mechanism.
Oppdragsgiver
  • Research Council of Norway (RCN) / 193179
Språk
Engelsk
Forfatter(e)
  • Astrid Marie F Muggerud
  • Eva Anne Mørtsell
  • Yanjun Li
  • Randi Holmestad
Institusjon(er)
  • Norges teknisk-naturvitenskapelige universitet
  • SINTEF Industri / Metallproduksjon og prosessering
År
Publisert i
Materials Science & Engineering: A
ISSN
0921-5093
Forlag
Elsevier
Årgang
567
Side(r)
21 - 28