Journal of Materials Engineering and Performance

, Volume 16, Issue 5, pp 584–591 | Cite as

2099 Aluminum-Lithium with Key-Locked Inserts for Aerospace Applications

  • H. Babel
  • J. Gibson
  • M. Tarkanian
  • C. Parrish
  • M. Prietto
  • A. Ordonez-Chu
  • H. Haberl
  • J. Kabisch
  • R. Clark
  • J. Ogren
  • O.S. Es Said
Article

Abstract

The purpose of this study was to determine the acceptability of nonpenetrating, key-locked inserts in 2099 aluminum-lithium. The tests conducted to make this assessment were: (1) microscopic examination for thread damage and delaminations after key installation, (2) pull-out load at 21 °C (70 °F) and −179 °C (−290 °F), and (3) mechanical cycling tests at room temperature and −179 °C (−290 °F). The test results indicated that for the three sizes evaluated, key-locked inserts in 2099-T6 and 2099-T8 were acceptable and although delaminations did occur on some T6 temper specimens, it was only as a failure mode at ultimate load and such behavior was judged to be acceptable.

Keywords

2099 aluminum-lithium 2099-T6 and T8 tempers key-locked inserts 

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Copyright information

© ASM International 2007

Authors and Affiliations

  • H. Babel
    • 1
  • J. Gibson
    • 1
  • M. Tarkanian
    • 1
  • C. Parrish
    • 1
  • M. Prietto
    • 2
  • A. Ordonez-Chu
    • 2
  • H. Haberl
    • 2
  • J. Kabisch
    • 2
  • R. Clark
    • 2
  • J. Ogren
    • 2
  • O.S. Es Said
    • 2
  1. 1.The Boeing CompayHuntington BeachUSA
  2. 2.Mechanical Engineering DepartmentLoyola Marymount UniversityLos AngelesUSA

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