Design and development of an experimental wrought aluminum alloy for use at elevated temperatures

I. J. Polmear, M. J. Couper

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A new wrought aluminum alloy has been designed having high room temperature strength (e.g., 0.2 pct P.S. 520 MPa) combined with improved creep resistance at temperatures in the range 150° to 220 °C. The alloy is A1-6.3 pct Cu-0.5 pct Mg-0.5 pct Ag-0.5 pct Mn-0.2 pct Zr and it is hardened by a new precipitate which forms on the {111} planes and appears to be highly stable at elevated temperatures. Details are given of the principles underlying the development of the alloy and of the preliminary assessment that has been made of mechanical properties. The alloy, or compositions close to it, also has potential for welded applications.

Original languageEnglish
Pages (from-to)1027-1035
Number of pages9
JournalMetallurgical Transactions A - Physical Metallurgy and Materials Science
Issue number4
Publication statusPublished - 1 Apr 1988

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