Processing-controlled suppression of Lüders elongation in AlMgMn alloys
Abstract
The Lüders elongation, εL, its dependence on grain size, and its processing-controlled suppression are examined on several AlMgMn alloys. We found that grain size variations result in a Hall-Petch-type εL relation. We interpret the increase in macroscopic flow stress upon εL as a transitional increase in the activation stress of dislocation sources, expressed by an additional term of the Hall-Petch coefficient. The decisive measure for...
Paper Details
Title
Processing-controlled suppression of Lüders elongation in AlMgMn alloys
Published Date
Jun 1, 2019
Journal
Volume
166
Pages
64 - 67
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