Effect of iron in Al-Mg-Si-Mn ductile diecast alloy

S. Ji, W. Yang, F. Gao, D. Watson, Z. Fan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

The effect of iron on the micro structure and mechanical properties of Al-Mg-Si-Mn alloys has been investigated in high pressure diecast components in association with CALPHAD modelling of the multi-component Al-Mg-Si-Mn-Fe system. It is found that the Fe-rich intermetallic phases solidify in two stages in the high pressure die casting process: one is in the shot sleeve and the other is in the die cavity, showing different morphologies. The compact and star-like intermetallics are identified as α-AlFeMnSi phase with typical composition of Al12(Fe,Mn)3Si. At the increased level of Fe content, β-AlFe is found in the micro structure with a long needle-shaped morphology, which is identified as Al13(Fe,Mn)4Si0.25. The existence of Fe-rich intermetallics in the alloy slightly increases the yield strength, but significantly reduces the elongation. The ultimate tensile strength maintains at similar levels when Fe contents are less than 0.6wt.%, but decreases significantly with the further increased Fe concentration in the alloys.

Original languageEnglish
Title of host publicationMinerals, Metals and Materials Series
EditorsBarry A. Sadler
PublisherSpringer International Publishing
Pages317-322
Number of pages6
ISBN (Print)9783030046385, 9783319515403, 9783319651354, 9783319728520, 9783319950211
DOIs
StatePublished - 2016
Externally publishedYes
Event142nd Annual Meeting and Exhibition, TMS 2013 - San Antonio, United States
Duration: 3 Mar 20137 Mar 2013

Publication series

NameMinerals, Metals and Materials Series
Volume0
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference142nd Annual Meeting and Exhibition, TMS 2013
Country/TerritoryUnited States
CitySan Antonio
Period3/03/137/03/13

Keywords

  • Aluminium alloy
  • CALPHAD
  • Fe-rich compounds
  • High pressure die casting
  • Mechanical properties

Fingerprint

Dive into the research topics of 'Effect of iron in Al-Mg-Si-Mn ductile diecast alloy'. Together they form a unique fingerprint.

Cite this