ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 7

A Comparative Study of the Effect of Low Temperature on the Fracture Toughness and Cyclic Properties of Two Candidate High-Strength Low-Alloy Steels for Arctic Pipeline Applications

Krishnadev, MR
Associate professor, graduate student, and professormember of ASTM, Laval University, Quebec,

Cutler, LR
Associate professor, graduate student, and professormember of ASTM, Laval University, Quebec,

Galibois, A
Associate professor, graduate student, and professormember of ASTM, Laval University, Quebec,

Abstract

Because of the need for a better understanding of the effect of Arctic low temperature environments on the mechanical behavior of high-strength low-alloy (HSLA) steels, a comparative study has been undertaken to evaluate the effect of low temperature on the mechanical properties of two candidate steels, columbium-molybdenum “acicular ferrite” HSLA steel and high-columbium HSLA steel. The paper presents the data relating to the effect of low temperature on the mechanical properties, namely, dynamic fracture toughness K_Id properties, through instrumented impact testing of precracked Charpy V-notch samples and cyclic properties of the two steels. It also discusses the results in terms of their significance to material specification, selection, and performance criteria for safe and economical transportation of petroleum resources from the Canadian Arctic.

Keywords:
high strength steels, low alloy steels, mechanical properties, low temperature tests

Paper ID: JTE10643J
DOI: 10.1520/JTE10643J
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