Aluminum copper magnesium alloys, testing
The effects of quenching conditions, single-step and two-step aging treatments on the tensile properties of an AL-4.5%Cu-1.5%Mg alloy has been investigated. Results indicate that two distinctly different precipitates of GPB and S' form during aging. Single-step aging at 140°C , 160°C and 190°C indicated that 24 hours at 160°C produced optimum strength (67 ksi UTS). Two-step aging for 3 days at 140°C plus 190°C resulted in a slight increase in strength over single step aging at 190°C. Slow (oil) quenching as well as direct quenching improved the tensile properties when aged at 190°C. Reversion occurred slowly over the temperature range 250°C to 350°C.
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Smith, William F.
Master of Science (M.S.)
College of Engineering
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Masters Thesis (Open Access)
Aluminum copper magnesium alloys -- Testing
Sulouff, Robert Earl, "Aging Characteristics of an Aluminum-4.5% Copper-1.5% Magnesium Alloy" (1977). Retrospective Theses and Dissertations. 383.
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