Materials pp 37-44 | Cite as

Microstructural Influence on the Work Hardening of Aluminum-Lithium Alloy 2090 at Cryogenic Temperatures

  • D. Chu
  • C. Tseng
  • J. W. MorrisJr.
Part of the Advances in Cryogenic Engineering book series (ACRE, volume 38)


Previous studies indicate that the work hardening characteristics of a Vintage III 2090-T81 12.7-mm (0.5-in.) plate is highly dependent on the through-thickness position.[1,2] This dependency has been linked to two distinctly different microstructures existing as laminates within the plate.[3] An investigation of the two microstructures by both optical and transmission electron microscopy reveal a difference in the distribution of grains and subgrains. It is believed that these factors affect the work hardening characteristics by governing the manner in which slip is transmitted from grain to grain. The findings are positive as they suggest a practical means by which improvements in work hardening can be obtained through modifications of the microstructure at the polygranular level.


Work Hardening Transmission Electron Microscopy Study Cryogenic Temperature Subgrain Boundary Boundary Misorientation 
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Copyright information

© Springer Science+Business Media New York 1992

Authors and Affiliations

  • D. Chu
    • 1
  • C. Tseng
    • 1
  • J. W. MorrisJr.
    • 1
  1. 1.Center for Advanced Materials, Lawrence Berkeley Laboratory, and Department of Materials Science and Mineral EngineeringUniversity of CaliforniaBerkeleyUSA

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