Relation Between Cyclic Creep and Pure Creep on Copper

[+] Author and Article Information
H. Ishikawa

Department of Mechanical Engineering II, Hokkaido University, Sapporo, 060 Japan

J. Eng. Mater. Technol 109(3), 221-225 (Jul 01, 1987) (5 pages) doi:10.1115/1.3225967 History: Received March 26, 1986; Online September 15, 2009


The behavior of a pure copper subject to pure creep and cyclic creep under imposed load is examined at room temperature, and at 200°C, 300°C, and 400°C to show the relation between these two kinds of phenomena. Plots of observed strain, not against number of cycles, but against time are available for the direct comparison between cyclic creep and pure creep. This unified treatment shows that the instantaneous strain affects the succeeding mechanism of both pure creep and cyclic creep. As the result, these two kinds of phenomena are essentially identified, and pure creep could be regarded as the extreme aspect of cyclic creep.

Copyright © 1987 by ASME
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