Stress-corrosion Cracking and Hydrogen-stress Cracking of High-strength Steel
Stress-corrosion Cracking and Hydrogen-stress Cracking of High-strength Steel

Author: Ellis E. Fletcher

Publisher:

Published: 1966

Total Pages: 28

ISBN-13:

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High-strength steels are susceptible to delayed cracking under suitable conditions. Frequently such a brittle failure occurs at a stress that is only a fraction of the nominal yield strength. Considerable controversy exists over whether such failures result from two separate and distinct phenomena or whether there is but one mechanism called by two different names. Stress-corrosion cracking is the process in which a crack propagates, at least partially, by the stress induced corrosion of a susceptible metal at the advancing tip of the stress-corrosion crack. There is considerable evidence that this cracking results from the electrtrochemical corrosion of a metal subjected to tensile stresses, either residual or externally applied. Hydrogen-stress cracking is cracking which occurs as the result of hydrogen in the metal lattice in combination with tensile stresses. Hydrogen-stress cracking cannot occur if hydrogen is prevented from entering the steel, or if hydrogen that has entered during processing or service is removed before permanent damage has occurred. It is generally agreed that corrosion plays no part in the actual fracture mechanism. This report was prepared to point out wherein the two fracture mechanisms under consideration are similar and wherein they differ. From the evidence available today, the present authors have concluded that there are two distinct mechansims of delayed failure. (Author).

Stress Corrosion Cracking
Stress Corrosion Cracking

Author: V S Raja

Publisher: Elsevier

Published: 2011-09-22

Total Pages: 817

ISBN-13: 0857093762

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The problem of stress corrosion cracking (SCC), which causes sudden failure of metals and other materials subjected to stress in corrosive environment(s), has a significant impact on a number of sectors including the oil and gas industries and nuclear power production. Stress corrosion cracking reviews the fundamentals of the phenomenon as well as examining stress corrosion behaviour in specific materials and particular industries. The book is divided into four parts. Part one covers the mechanisms of SCC and hydrogen embrittlement, while the focus of part two is on methods of testing for SCC in metals. Chapters in part three each review the phenomenon with reference to a specific material, with a variety of metals, alloys and composites discussed, including steels, titanium alloys and polymer composites. In part four, the effect of SCC in various industries is examined, with chapters covering subjects such as aerospace engineering, nuclear reactors, utilities and pipelines. With its distinguished editors and international team of contributors, Stress corrosion cracking is an essential reference for engineers and designers working with metals, alloys and polymers, and will be an invaluable tool for any industries in which metallic components are exposed to tension, corrosive environments at ambient and high temperatures. Examines the mechanisms of stress corrosion cracking (SCC) presenting recognising testing methods and materials resistant to SCC Assesses the effect of SCC on particular metals featuring steel, stainless steel, nickel-based alloys, magnesium alloys, copper-based alloys and welds in steels Reviews the monitoring and management of SCC and the affect of SCC in different industries such as petrochemical and aerospace

A Bent Beam Test Method for Hydrogen Sulfide Stress Corrosion Cracking Resistance
A Bent Beam Test Method for Hydrogen Sulfide Stress Corrosion Cracking Resistance

Author: Donald O. Cox

Publisher:

Published: 1988

Total Pages: 10

ISBN-13:

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Brittle fracture due to hydrogen sulfide exposure of high-strength, low-alloy steel has been recognized for many years. A relatively simple testing procedure used to estimate and rank a material's resistance to hydrogen sulfide stress corrosion cracking is described. This test gives quantitative data regarding relative susceptibility after a relatively short testing period. Field testing is also possible.