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ASTM Selected Technical Papers
Effects of Radiation on Materials: 22nd Symposium
By
TR Allen
TR Allen
1
Symposium Chair and Editor
?
University of Wisconsin
?
Madison, Wisconsin
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RG Lott
RG Lott
2
Symposium Co-Chair and Editor
?
Westinghouse Electric Company
?
Pittsburgh, Pennsylvania
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JT Busby
JT Busby
3
Symposium Co-Chair and Editor
?
Oak Ridge National Laboratory
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AS Kumar
AS Kumar
4
Symposium Co-Chair and Editor
?
University of Missouri-Rolla
?
Rolla, Missouri
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ISBN-10:
0-8031-3401-0
ISBN:
978-0-8031-3401-0
No. of Pages:
406
Publisher:
ASTM International
Publication date:
2006

Copper alloys are found to experience a stress relaxation during holds at maximum tension and maximum compression during cyclic loading patterns. This stress relaxation response has an effect on fatigue life by reducing the numbers of cycles to failure, particularly in the high cycle fatigue, long life regime. The stress relaxation behavior is found even for room temperature loading conditions, well below the temperature regime normally associated with creep and stress relaxation. It is suggested that the creep and stress relaxation deformation modes during hold periods is predominantly through primary creep process.

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