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Effects of thermal processing and copper additions on the mechanical properties of aluminum alloy ingot AA 2618

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Abstract

This study compared the ambient and elevated- temperature T6 tensile properties of “air slip” cast aluminum alloy ingot 2618 and 2618 alloyed with additional copper (as well as some additional manganese, iron, and nickel). The increased alloying appears to increase strength slightly, but to decrease ductility at ambient temperature. At 149 °C, the copper- rich 2618 has slightly lower strength and ductility than 2618. The standard aging temperature and time produce higher ambient- temperature strength but lower ductility than lower aging temperatures at the same or shorter aging times in copper- rich 2618 alloy. Thus, the additional alloying does not significantly improve mechanical properties, particularly strength, even after T6 aging modification.

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Authors and Affiliations

  1. Northwest Aluminum Company, 97058, The Dalles, OR, USA

    S.C Bergsma, X Li & M.E Kassner

Authors
  1. S.C Bergsma
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  2. X Li
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  3. M.E Kassner
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Bergsma, S., Li, X. & Kassner, M. Effects of thermal processing and copper additions on the mechanical properties of aluminum alloy ingot AA 2618. JMEP 5, 100–102 (1996). https://doi.org/10.1007/BF02647276

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  • DOI: https://doi.org/10.1007/BF02647276

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