Study of Precipitation and Deformation Characteristics of the Aluminum-LithiumAlloy by X-ray Double Crystal Diffractometry

摘要

The x-ray double crystal diffractometry technique offers an excellent possibilityfor measuring microdeformations and microdefects within individual grains. This method is non-destructive and rapidly performed, and does not need any sample preparation. It is well suited to study the mechanical properties of materials and is particularly useful when the degree of deformation is small. In this article the precipitation hardening characteristics of the Al-Li alloy, as analyzed by the x-ray double crystal diffractometry technique, is reported. In addition, the x-ray double crystal diffractometry method was also applied to study the deformation mechanisms in this alloy.