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AJ alloys

From Wikipedia, the free encyclopedia

AJ alloys (AJ52 and AJ62) are die castable alloys of magnesium that have good creep resistance at high temperature. They contain magnesium, aluminium, and strontium.[1]

In the names the 'J' refers to Strontium.

Alloy   Mg     Al%  Sr%  Mn% 
AJ62  Balance  6    2    0.34   [2]
AJ52  Balance  5    2    0.4    [3]

AJ52 has higher creep resistance, and AJ62 has better castability. Both are used in the BMW magnesium–aluminium composite engine block.[4]

References

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  1. ^ M. Scharrer; et al. (2007). "Advances in Magnesium Injection Molding (Thixomolding)". In K. U. Kainer (ed.). Magnesium: Proceedings of the 7th International Conference on Magnesium Alloys and Their Applications. Wiley-VCH. p. 252. ISBN 978-3-527-31764-6.
  2. ^ http://www.archivesmse.org/vol28_6/2865.pdf Archived 2011-07-25 at the Wayback Machine. MSE AJ62
  3. ^ "Archived copy" (PDF). Archived from the original (PDF) on 2011-07-28. Retrieved 2009-09-03.{{cite web}}: CS1 maint: archived copy as title (link)
  4. ^ Helmut Kaufmann and Peter J. Uggowitzer (2007). Metallurgy and Processing of High-Integrity Light Metal Pressure Castings. Fachverlag Schiele & Schoen. p. 197. ISBN 978-3-7949-0754-0.