Journal of Materials Engineering and Performance

, Volume 15, Issue 5, pp 601–607 | Cite as

The effect of thermal exposure on the mechanical properties of 2099-T6 die forgings, 2099-T83 extrusions, 7075-T7651 plate, 7085-T7452 die forgings, 7085-T7651 plate, and 2397-T87 plate aluminum alloys

  • J. Jabra
  • M. Romios
  • J. Lai
  • E. Lee
  • M. Setiawan
  • J. R. Ogren
  • R. Clark
  • T. Oppenheim
  • O. S. Es-Said
  • E. W. Lee
  • N. Abourialy
  • W. E. Frazier
  • J. Witters
Article

Abstract

Aluminum alloys 2099-T6 die forgings, 2099-T83 extrusions, 7075-T7651 plate, 7085-T7452 die forgings, 7085-T7651 plate, and 2397-T87 plate were thermally exposed at temperatures of 180 °C (350 °F), 230 °C (450 °F), and 290 °C (550 °F) for 0.1, 0.5, 2, 10, 100, and 1000 h. The purpose of this study was to determine the effect of thermal exposure on the mechanical properties and electrical conductivity of these alloys. The data shows that higher temperatures and longer exposure times generally resulted in decreased strength and hardness and increased percent elongation and electrical conductivity.

Keywords

age hardenable Al alloys aircraft materials engineering correlations overaging thermal exposure 

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Copyright information

© ASM International 2006

Authors and Affiliations

  • J. Jabra
    • 1
  • M. Romios
    • 1
  • J. Lai
    • 1
  • E. Lee
    • 1
  • M. Setiawan
    • 1
  • J. R. Ogren
    • 1
  • R. Clark
    • 1
  • T. Oppenheim
    • 1
  • O. S. Es-Said
    • 1
  • E. W. Lee
    • 2
  • N. Abourialy
    • 2
  • W. E. Frazier
    • 2
  • J. Witters
    • 3
  1. 1.Mechanical Engineering DepartmentLoyola Marymount UniversityLos Angeles
  2. 2.Naval Air Systems CommandNaval Air Warfare CenterPatuxent River
  3. 3.Alcoa, Aerospace Application EngineeringBettendorf

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