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07RTS8 Emerging Issues and Fundamental Processes in Environmental Cracking in Hot Water

Picture for 07RTS8 Emerging Issues and Fundamental Processes in Environmental Cracking in Hot Water
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Product Number: 51300-07RTS8-SG
ISBN: 07RTS8 2007 CP
Author: Peter L. Andresen
Publication Date: 2007
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$20.00
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In the absence of definitive data, mechanistic and modeling approaches to describe environmental cracking in high temperature water are forced to depend too strongly on speculative hypotheses. Because data often exhibit a scatter of about a factor of 1000, the last two decades have focused on improved and critical experiments, and identifying the common threads across many materials and environments. The present data provide excellent insight into many issues, and good insights into others. They also identie new / emerging issues in the broad area of environmental cracking, e.g., related to dWda, reloading effects, and fracture toughness and tearing resistance. Environmental cracking depends on many interdependent variables, and the only comprehensive way of tackling this problem is to identifv the underlying processes that control SCC. This paper discusses the processes that must be understood and modeled, and the challenges in expanding the predictions to emerging phenomena. Key words: stress corrosion cracking, crack growth rates, prediction, mechanisms, emerging issues, high temperature water, water chemistry, stainless steel, Ni alloys, corrosion potential, stress intensity factor.
In the absence of definitive data, mechanistic and modeling approaches to describe environmental cracking in high temperature water are forced to depend too strongly on speculative hypotheses. Because data often exhibit a scatter of about a factor of 1000, the last two decades have focused on improved and critical experiments, and identifying the common threads across many materials and environments. The present data provide excellent insight into many issues, and good insights into others. They also identie new / emerging issues in the broad area of environmental cracking, e.g., related to dWda, reloading effects, and fracture toughness and tearing resistance. Environmental cracking depends on many interdependent variables, and the only comprehensive way of tackling this problem is to identifv the underlying processes that control SCC. This paper discusses the processes that must be understood and modeled, and the challenges in expanding the predictions to emerging phenomena. Key words: stress corrosion cracking, crack growth rates, prediction, mechanisms, emerging issues, high temperature water, water chemistry, stainless steel, Ni alloys, corrosion potential, stress intensity factor.
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