Application of the Grain Boundary Internal Friction Peak to the Determination of Optimum Deformation Conditions of a Superplastic Alloy
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Begun in 1973, the Review of Progress in Quantitative Nondestructive Evaluation (QNDE) is the premier international NDE meeting designed to provide an interface between research and early engineering through the presentation of current ideas and results focused on facilitating a rapid transfer to engineering development.
This site provides free, public access to papers presented at the annual QNDE conference between 1983 and 1999, and abstracts for papers presented at the conference since 2001.
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Abstract
The grain boundary internal friction peak of a superplastic alloy, Al-2.7Li-1.2Cu-0.9Mg-0.14Zr (in wt%), is measured with a variable frequency pendulum. The Arrhenius line for the higher temperature edge of the peak is suggested to be used as a guide line for the determination of the optimum superplastic forming conditions (temperature and strain rate) of the alloy.