Role of cold-work in the temporary suppression of void swelling
TL;DRAbstract
It is proposed that the primary role of cold work on the swelling of AISI 316 is to distribute the element carbon throughout the alloy matrix and increase the apparent solubility of carbon by binding it in the stress field of the dislocation core. The resultant decrease in supersaturation and activity of carbon leads to a decrease in the rate of phase formation which preceeds swelling. A model developed to describe this phenomenon predicts that all carbon present in 20% cold-worked AISI 316 of nominal specification will be initially in bound-soultion at all irradiation temperatures.
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It is proposed that the primary role of cold work on the swelling of AISI 316 is to distribute the element carbon throughout the alloy matrix and increase the apparent solubility of carbon by binding it in the stress field of the dislocation core. The resultant decrease in supersaturation and activity of carbon leads to a decrease in the rate of phase formation which preceeds swelling. A model developed to describe this phenomenon predicts that all carbon present in 20% cold-worked AISI 316 of nominal specification will be initially in bound-soultion at all irradiation temperatures.
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