Article

Journal of Materials Engineering and Performance

, Volume 20, Issue 6, pp 1003-1014

The Effects of Retrogression and Reaging on Aluminum Alloy 2195

  • N. WardAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , A. TranAffiliated withMechanical Engineering Department, Loyola Marymount University
  • , A. AbadAffiliated withNorthrop Grumman Aerospace Systems Air Combat Systems
  • , E. W. LeeAffiliated withNaval Air Systems Command, Naval Air Warfare
  • , M. HahnAffiliated withNorthrop Grumman Aerospace Systems Air Combat Systems
  • , E. FordanAffiliated withNorthrop Grumman Aerospace Systems Air Combat Systems
  • , O. Es-SaidAffiliated withMechanical Engineering Department, Loyola Marymount University Email author 

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Abstract

A retrogression and reaging (RRA) treatment was performed on 2195 Al-Li Alloy. The exposure times were from 5 to 60 min, and the temperatures were from 200 to 250 °C. Samples that were exposed to a salt spray test had overall similar mechanical properties as compared to those that were not exposed. The percent elongation, however, was significantly deteriorated due to the salt spray exposure. The mechanical properties of the 2195 samples were compared to those of 2099 samples exposed to similar treatments in an earlier study.

Keywords

aluminum lithium alloys retrogression and reaging 2195 and 2099 alloys