Alloy X-750 was originally developed as a precipitation hardened high nickel alloy for high temperature application. This alloy has been applied to springs, pins and other core internal components in nuclear reactors, because the alloy has superior relaxation resistance, spring properties and corrosion resistance. However, stress corrosion cracking has been recently observed in support pins and flexure pins made of Alloy X-750 as core internal components in nuclear reactors. The authors have investigated the influence of heat treatment condition on the stress corrosion cracking resistance. This paper describes the results of these stress corrosion cracking tests. It compares these results with the proposed mechanisms of stress corrosion cracking in precipitation hardened superalloys in deaerated high temperature water.
|Title of host publication||Unknown Host Publication Title|
|Number of pages||23|
|Publication status||Published - 1984|
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