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Grain-size dependence of the flow stress of Cu from millimeters to nanometers

✍ Scribed by Hans Conrad

Book ID
107440601
Publisher
The Minerals, Metals & Materials Society
Year
2004
Tongue
English
Weight
337 KB
Volume
35
Category
Article
ISSN
1073-5623

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The dependence of flow stress on grain size was studied in a Cu-1%Cd alloy. The Hall-Petch constants are related to true strain in such a way that Οƒ 0 (Ξ΅) is proportional to Ξ΅ and k(Ξ΅) having negative variation with Ξ΅ 1/2 . A new equation for flow stress as a function of true strain (Ξ΅) and grain si

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Tensile stress strain data for 99.999". copper at room and liquid nitrogen temperature as a function of grain size are presented together with some microstructural observations made by transmission electron microscopy. It is shown that the flow stress data. at constant strain may be expressed in ter