Fatigue-Crack Growth in an X-65 Line-Pipe Steel at Low Cyclic Frequencies in Aqueous EnvironmentsSource: Journal of Engineering Materials and Technology:;1975:;volume( 097 ):;issue: 004::page 298Author:O. Vosikovsky
DOI: 10.1115/1.3443302Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The effects of salt and distilled water environments on fatigue-crack growth rates have been evaluated for an X-65 line-pipe steel. Tests were conducted over a frequency range between 10 and 0.01 Hz, under conditions of cathodic potential and free corrosion. A distinct pattern in the functional dependence of growth rates on ΔK and frequency has been found. Maximum environmental enhancement of growth rates was 50 times that of air at a cathodic potential of −1.04V, and 10 times that of air at a free-corrosion potential of −0.68V. In each case it occurred at the lowest frequency and at relatively high values of ΔK. Hydrogen embrittlement and the two-stage cracking process are examined as the main mechanisms of growth acceleration.
keyword(s): Steel , Pipes , Fatigue cracks , Frequency , Corrosion , Hydrogen , Water , Mechanisms , Embrittlement AND Cracking (Materials) ,
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contributor author | O. Vosikovsky | |
date accessioned | 2017-05-08T22:58:39Z | |
date available | 2017-05-08T22:58:39Z | |
date copyright | October, 1975 | |
date issued | 1975 | |
identifier issn | 0094-4289 | |
identifier other | JEMTA8-26843#298_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/87493 | |
description abstract | The effects of salt and distilled water environments on fatigue-crack growth rates have been evaluated for an X-65 line-pipe steel. Tests were conducted over a frequency range between 10 and 0.01 Hz, under conditions of cathodic potential and free corrosion. A distinct pattern in the functional dependence of growth rates on ΔK and frequency has been found. Maximum environmental enhancement of growth rates was 50 times that of air at a cathodic potential of −1.04V, and 10 times that of air at a free-corrosion potential of −0.68V. In each case it occurred at the lowest frequency and at relatively high values of ΔK. Hydrogen embrittlement and the two-stage cracking process are examined as the main mechanisms of growth acceleration. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Fatigue-Crack Growth in an X-65 Line-Pipe Steel at Low Cyclic Frequencies in Aqueous Environments | |
type | Journal Paper | |
journal volume | 97 | |
journal issue | 4 | |
journal title | Journal of Engineering Materials and Technology | |
identifier doi | 10.1115/1.3443302 | |
journal fristpage | 298 | |
journal lastpage | 304 | |
identifier eissn | 1528-8889 | |
keywords | Steel | |
keywords | Pipes | |
keywords | Fatigue cracks | |
keywords | Frequency | |
keywords | Corrosion | |
keywords | Hydrogen | |
keywords | Water | |
keywords | Mechanisms | |
keywords | Embrittlement AND Cracking (Materials) | |
tree | Journal of Engineering Materials and Technology:;1975:;volume( 097 ):;issue: 004 | |
contenttype | Fulltext |