Effect of temperature on the preferential intergranular oxidation susceptibility of thermally-treated Alloy 600
Source abstract
Abstract
Thermally-treated Alloy 600 coupons were tested in pressurized water reactor simulated primary water at 320 °C and in high-pressure superheated steam at 400 °C to study the effect of a “semi-continuous” network of intergranular carbides on the stress corrosion cracking “precursors events”: preferential intergranular oxidation (PIO) and diffusion-induced grain boundary migration (DIGM). The intergranular carbides were partially consumed due to the environmental exposure, whereby the Cr released from the carbides contributed to the formation of the external oxide layer that limited both PIO and DIGM. The results were compared with previous studies in which similar coupons were exposed to H2-steam.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · High-Temperature Coating Behaviors · Nuclear Materials and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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