Stress-corrosion Cracking in High Strength Steels and in Titanium and Aluminum Alloys PDF Download
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Author: Benjamin Floyd Brown
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 390
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Book Description
Author: Benjamin Floyd Brown
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 390
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Book Description
Author: C. J. Slunder
Publisher:
ISBN:
Category : Steel, High strength
Languages : en
Pages : 50
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 31
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Book Description
One of the major problems of metal structures in the seawater environment is the growth of flaws by the stress-corrosion-cracking (SCC) mechanism. Environmental effects on the integrity of the structure are related both to SCC processes and to the inherent tolerance of the material for flaws at regions of high stresses. The Ratio Analysis Diagram (RAD) provides translations of fracture resistance properties of metals to expected structural performance; the RAD has been modified to include analyses of the effects of SCC. The significance of section-size effects on the results of SCC tests based on linear-elastic analysis methods and expected structural behavior are included on the modified diagram, which is called the Dual-SCC RAD. Examples of several current high-strength steels and titanium alloys are referenced to the Dual-SCC RAD to illustrate its use.
Author: Warren E. Berry
Publisher:
ISBN:
Category : Metals
Languages : en
Pages : 36
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Author: Mars Guy Fontana
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 210
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Book Description
Activation energies of 6-7 kcal for stress corrosion cracking were determined for unalloyed titanium and titanium alloys Ti-6-4 and Ti-8-1-1, and beta III in CH3OH + HCl + H2O and CH3OH + Br2 solutions, suggesting that either chloride ion attack or titanium hydride formation describe the cracking mechanism. Chemical methods, to reduce the water content of methanol to low levels and to accurately determine these levels, have been developed to examine the effect of small water concentrations on the stress corrosion cracking behavior of titanium in methanol environments. Work on the fundamental aspects of stress corrosion cracking of high-strength steels includes studies of effects of structure on crack velocity, hydrogen interactions with the steel, acoustical emission, dissolution of iron carbides, and growth kinetics of passive films. Studies on hydrogen absorption show that the kinetics of hydrogen entry depended critically on the potential as it relates to the chemical identity of arsenic-containing species. Growth kinetics of passive films at pH 4 and 6 are reported and optical constants are found to exhibit wider variations at these pH's than at pH 8. The dissolution of the film was shown to increase with decreasing pH. Work on the delayed failure of high-strength steels shows that ductility is significantly affected by specimen size, hydrogen charging conditions, and extent of prior deformation.
Author: Richard A. Pride
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 28
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Stress corrosion crack growth studies have been performed on annealed and cold worked Titanium Grade 7 and Alloy 22 in 110 C, aerated, concentrated, high pH salt environments characteristic of concentrated ground water. Following a very careful transition from fatigue precracking conditions to SCC conditions, the long term behavior under very stable conditions was monitored using reversing dc potential drop. Titanium Grade 7 exhibited continuous crack growth under both near-static and complete static loading conditions. Alloy 22 exhibited similar growth rates, but was less prone to maintain stable crack growth as conditions approached fully static loading.
Author: G. Taccani
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: J. C. Scully
Publisher:
ISBN:
Category : Alloys
Languages : en
Pages : 494
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Author: Mars G. Fontana
Publisher:
ISBN:
Category :
Languages : en
Pages : 521
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Book Description
Studies on the stress corrosion cracking of titanium and its alloys involved the initiation and propagation of cracks in aqueous and organic environments, combined effects of stress and potential. Corrosion processes within crevices, and alloy composition. Straining electrode studies are reported. (Author).
