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environmental stress response

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780305
EISBN: 978-1-62708-281-5
... Abstract This article discusses the molecular mechanism, environmental criteria, and material optimization of environmental stress crazing (ESC) in glassy thermoplastics, polyethylenes, and nylons. In addition, it provides information on various tests used to determine relative susceptibility...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780146
EISBN: 978-1-62708-281-5
..., namely plasticization, solvation, swelling, environmental stress cracking, polymer degradation, surface embrittlement, and temperature effects. chemical susceptibility thermal oxidative degradation photo-oxidative degradation environmental corrosion chemical corrosion plasticization solvation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090349
EISBN: 978-1-62708-266-2
..., environmental factors, and cracking characteristics. It includes a model that accounts for the primary factors involved in intergranular SCC, namely, tensile stresses above the yield stress of the base material, a sensitized microstructure, and reactor cooling water. The chapter also provides proven remedies...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090135
EISBN: 978-1-62708-266-2
... times. However, CGR measurements using fracture mechanics specimens have proven to be the most effective method of studying SCC as a function of alloy and environmental variables ( Ref 5.90 , 5.94 ). As shown in Fig. 5.22 , crack velocity of alloy 690 in primary environment as a function of stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
... Abstract This chapter describes the conditions under which copper-base alloys are susceptible to stress-corrosion cracking (SCC) and some of the environmental factors, such as temperature, pH, and corrosion potential, that influence crack growth and time to failure. It explains that, although...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
... strain, plastic strain, and residual stress responses. It also describes the difference between smooth and precracked specimens and how they are used, provides information on slow-strain-rate testing and how to assess the results, and discusses various test environments and procedures, including tests...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... failures in engineering materials that occur by slow, environmentally induced crack propagation. The observed crack propagation is the result of the combined and synergistic interaction of mechanical stress and corrosion reactions. Before SCC can be discussed in detail, several things must be clearly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... residual stresses can be used to prevent this phenomenon. Static loading usually is considered to be responsible for SCC, while environmentally induced crack propagation due to cyclic loading is defined as corrosion fatigue (see the section “Corrosion Fatigue” in the article “Forms of Mechanically...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090191
EISBN: 978-1-62708-266-2
... identical strings of specimens were substituted for fuel rods. The distinction between the IASCC response of the two reactor types was small ( Fig. 6.3 ). Fig. 6.3 Irradiation-assisted stress-corrosion cracking of various alloys exposed to (a) boiling water reactor (BWR) and (b) pressurized water...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090043
EISBN: 978-1-62708-266-2
... corrosion can be detected (except possibly for SCC itself). As described elsewhere in this book, stress-corrosion cracking is defined as environmentally induced subcritical crack growth under the influence of static or dynamic tensile stress ( Ref 2.1 ). Three factors must be present, simultaneously...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090419
EISBN: 978-1-62708-266-2
... microscopic examination nickel nickel alloys nondestructive evaluation stress-corrosion cracking titanium titanium alloys fractography STRESS-CORROSION CRACKING (SCC) is a term used to describe service failures that occur by a process of environmentally induced crack initiation and propagation. It...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090067
EISBN: 978-1-62708-266-2
... strong state-of-stress influence exists in environmental degradation in general. For SCC of high-yield-strength steels, for which brittle intergranular or cleavage modes are involved, mode I plane-strain conditions are most severe for crack growth. In addition, equibiaxial stresses are most severe for...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090303
EISBN: 978-1-62708-266-2
... ( Ref 11.5 ), heat treatment ( Ref 11.5 ), stress intensity ( Ref 11.17 ), and so on. Cracking mode is apparently the consequence of the combined effect of environmental, metallurgical, and mechanical factors, and it is not necessary to establish different mechanisms to account for it. Many...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090241
EISBN: 978-1-62708-266-2
.... During the preliminary stage, a fine high-density precipitation dispersion is nucleated, producing high strength. The second stage is then used to develop resistance to SCC and exfoliation. Extensive accelerated and environmental testing has demonstrated that 7075-T73 resists SCC even when stresses are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090257
EISBN: 978-1-62708-266-2
... Abstract Stress-corrosion cracking (SCC) in magnesium alloys was first reported in the 1930s and, within ten years, became the focus of intense study. This chapter provides a summary of all known work published since then on the nature of SCC in magnesium alloys and how it is related to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870099
EISBN: 978-1-62708-299-0
... Abstract Environmentally assisted cracking is a generic term that includes various cracking phenomena such as stress-corrosion cracking (SCC), corrosion fatigue cracking, and liquid-metal embrittlement. This chapter describes these cracking mechanisms beginning with SCC and the factors that...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610501
EISBN: 978-1-62708-303-4
... environment, and by electrochemical control. Corrosion fatigue occurs in metals as a result of the combined action of a cyclic stress and a corrosive environment. Corrosion fatigue is dependent on the interactions among loading, environmental, and metallurgical factors. In the absence of fatigue...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240243
EISBN: 978-1-62708-251-8
... occurs. It describes the most effective methods of improving fatigue life. The chapter also explains the effect of geometrical stress concentrations on fatigue. In addition, it explores the environmental effects of corrosion fatigue, low-temperature fatigue, high-temperature fatigue, and thermal fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540215
EISBN: 978-1-62708-309-6
... Abstract This chapter presents a fracture-mechanics-based approach to damage tolerance, accounting for mechanical, metallurgical, and environmental factors that drive crack development and growth. It begins with a review of stress-intensity factors corresponding to a wide range of crack...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610025
EISBN: 978-1-62708-303-4
... Abstract This chapter discusses the stress-strain response of materials, how it is measured, and how it used to set performance expectations. It begins by describing the common tensile test and how it sheds light on the elastic design of structures as well as plasticity and fracture behaviors...