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environment-sensitive fracture

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030117
EISBN: 978-1-62708-282-2
... cracking (SCC), except that it may occur in environments that normally do not cause failures under static stress, such as sodium chloride or sodium sulfate solutions. Environmental effects can usually be identified by the presence of corrosion damage or corrosion products on fracture surfaces or within...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940271
EISBN: 978-1-62708-302-7
... or surface film. crevice corrosion environment-sensitive fracture intergranular corrosion microbiologically-influenced corrosion pitting corrosion The Concept of Localized Corrosion A concept of uniform corrosion should be defined as a basis to which localized corrosion can be compared...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... such as mass transport of environmental species up the crack to the crack tip. In stage 3, the rate of crack propagation exceeds the plateau velocity as the stress-intensity level approaches the critical stress-intensity level for mechanical fracture in an inert environment, K Ic ( Ref 10 ). Slow Strain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... solvation and dissolution or by mechanical fracture (ductile or brittle). Mechanical fracture includes normal fracture processes that are assumed to be stimulated or induced by one of the following interactions between the material and the environment: Adsorption of environmental species Surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... to this type of failure ( Ref 18.21 ). Despite the substantial progress that has been achieved in the field, SCC continues to be not only an economic problem but also a safety and environmental concern, because SCC failures have been detected in a wide range of environments, steel grades, and steel structures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
... as SCC proceeds, with the role of stress being negligible at first and then becoming dominant as subcritical cracking advances. Environmental action must always be involved, although it may be dominant only at first. The preexistence of a mechanical flaw or crack in the stressed metal may of course alter...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090317
EISBN: 978-1-62708-266-2
... decreases, but sensitivity to atmospheric oxygen increases. Alloys of nearly all compositions are susceptible to aqueous environments that contain chloride ions. Fig. 12.1 Effect of composition on physical metallurgy, general corrosion resistance, and environmentally assisted cracking trends...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
..., Ed., 1979 ASTM STP 821: Environment-Sensitive Fracture: Evaluation and Comparison of Test Methods , S.W. Dean, E.N. Pugh, and G.M. Ugiansky, Ed., 1984 ASTM STP 1210: “Slow Strain Rate Testing for the Evaluation of Environmentally Induced Cracking: Research and Engineering Application , R.D...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820177
EISBN: 978-1-62708-339-3
... by aqueous H 2 S solutions or sour waters (generically referred to as refinery wet H 2 S environments) can result in one or more types of environmentally assisted cracking (EAC). These forms of EAC are related primarily to the damage caused by hydrogen that results from the production of hydrogen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610501
EISBN: 978-1-62708-303-4
... to be sensitized and is susceptible to intergranular attack in a corrosive environment. The classic example of intergranular corrosion occurs when stainless steels become sensitized by the diffusion of chromium and trace amounts of carbon to the grain boundaries during elevated temperatures, resulting...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090135
EISBN: 978-1-62708-266-2
... classifications: Cl − + H 2 S + CO 2 + elemental sulfur environments Other sulfur-containing environments (thiosulfate, tetrathionate, polythionic acid) Environmentally-induced cracking has been observed in the first type of environment, both at low and high temperatures. However, in low...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090095
EISBN: 978-1-62708-266-2
... environments of nuclear light-water reactors is discussed later in this chapter. Effects of Environmental Variables Temperature is an important variable in determining whether chloride SCC will occur. The traditional engineering viewpoint, based on practical experience ( Ref 4.53 ), has been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.tb.cub.t66910475
EISBN: 978-1-62708-250-1
... investigations because, as the name implies, they more closely approximate the conditions encountered in service. In these tests, either actual components or test specimens are exposed to a synthetic or natural environment. The test conditions should simulate as closely as possible the environmental...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310027
EISBN: 978-1-62708-286-0
... such as that shown in Fig. 6 . These diagrams show constant corrosion behavior under varying environmental conditions such as temperature and solution composition. This information is available to guide the designer in selecting appropriate steels for various environments, and it is highly recommended...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030003
EISBN: 978-1-62708-282-2
... and this publication, considerable work has been done in the area of environmentally induced cracking. However, little gain has been made on the theory of the various cracking mechanisms, and certainly the same is true for progress in modeling or quantitative methods to predict cracking induced by the environment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090257
EISBN: 978-1-62708-266-2
... that has been published on this subject since the late 1930s and summarizes the material, mechanical, and environmental factors that influence SCC susceptibility in magnesium alloys, as well as SCC crack morphologies, proposed SCC mechanisms, accounts of service failures, and recommended preventive...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870219
EISBN: 978-1-62708-299-0
... accelerated environments and in natural, outdoor atmospheres. G 129 Practice for Slow Strain Rate Testing to Evaluate the Susceptibility of Metallic Materials to Environmentally Assisted Cracking Describes procedures for the design, preparation, and use of axially loaded, tension test specimens for use...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240323
EISBN: 978-1-62708-251-8
... copper is expected to redeposit. Both dezincification mechanisms can occur independently or in conjunction, depending on the given environmental conditions. Two types of damage can be characterized: one type of dezincification is uniform, and the second is plug type. Uniform or layer-type...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630211
EISBN: 978-1-62708-270-9
..., corrosion fatigue (a subset of environmentally induced cracking) is essentially fatigue fracture aggravated by the effects of the environment. Reference 1 defines corrosion fatigue as: In general, we think of the corrosion that occurs during cyclic stressing as reducing fatigue life, as pointed out...