Abstract
Nickel-copper alloy K-500 has long been used for the manufacture of fasteners for seawater applications. Alloy K-500 is a nickel-copper solid solution, precipitation strengthened with fine gamma prime precipitates to give it high strength, toughness and good general corrosion resistance. As the use of K-500 has increased in seawater, specifically in seawater tanks protected with anodes, its susceptibility to hydrogen embrittlement has come to light. Several recent failures in air suggest other rate-dependent failure mechanisms for this alloy that must be considered in fastener applications. These failure mechanisms and their interactions will be discussed.
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1994
Association for Materials Protection and Performance (AMPP)
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