Improved multiple ageing treatments for AA6111

S. L. Goh, J. F. Nie, L. Bourgeois, B. C. Muddle, J. D. Embury

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

2 Citations (Scopus)


The effects of multiple ageing treatments on the precipitation hardening response of aluminium alloy AA6111 has been studied by varying the first stage ageing temperature and period systematically. The effects of intermediate low temperature ageing dwell time were also studied. Throughout this work, the final ageing temperature was restricted to 180°C in order to coincide with the temperature used for the paint-baking cycle in the industry. It is found that with proper multiple ageing treatments, the kinetics of the age hardening response can be reduced from 8 hours to 4 hours and that the peak hardness can be increased from 128HV to 132HV.

Original languageEnglish
Title of host publicationAluminium Alloys 2006
Subtitle of host publicationResearch Through Innovation and Technology - Proceedings of the 10th International Conference on Aluminium Alloys
Number of pages6
EditionPART 2
Publication statusPublished - 1 Dec 2006
Event10th International Conference on Aluminium Alloys, (ICAA-10) - Vancouver, Canada
Duration: 9 Jul 200613 Jul 2006

Publication series

NameMaterials Science Forum
NumberPART 2
ISSN (Print)0255-5476


Conference10th International Conference on Aluminium Alloys, (ICAA-10)


  • Ageing kinetics
  • Al-Mg-Si-Cu alloy
  • Multiple ageing treatment
  • Precipitation hardening

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