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TECHNICAL PAPERS

Effects of Prestrain on Fracture Toughness and Fatigue-Crack Growth of Line Pipe Steels

[+] Author and Article Information
Naoto Hagiwara, Tomoki Masuda

Fundamental Technology Laboratory, Tokyo Gas Co., Ltd., Tokyo, 105-0023, Japan

Noritake Oguchi

Pipeline Department, Tokyo Gas Co., Ltd., Tokyo, 108-8527, Japan

J. Pressure Vessel Technol 123(3), 355-361 (Apr 20, 2001) (7 pages) doi:10.1115/1.1379531 History: Received July 21, 2000; Revised April 20, 2001
Copyright © 2001 by ASME
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References

Figures

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Dimensions of test specimens
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Temperature dependence of critical CTOD
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Prestrain dependence of critical CTOD
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Transition temperature versus |α|
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Prestrain dependence of normalized critical CTOD
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Typical fractographs for Steel E—(a) εpr=2 percent, (b) εpr=3 percent at 0 °C
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Transition temperature versus critical prestrain
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Effect of prestrain on number of cycles to 0.1 mm of fatigue crack growth
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Relationship between crack length and crack growth rate
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Relationship between crack length and crack growth rate
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Relationship between ΔK/(B−Kmax) and crack growth rate
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Relationship between ΔK/(B−Kmax) and crack growth rate
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Effect of prestrain on the coefficient C
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Effect of prestrain on the coefficient n

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