This study examined how cold forging (CF) affects the corrosion of 316 stainless steel (SS) in molten FLiNaK salt at 700 °C for 48 h. CF samples had two corrosion areas: one near the top and another displaying intergranular corrosion (IGC). Samples with lower CF (5–30 %) showed more IGC, while the 50 % CF sample had less IGC but the shallowest corrosion depth. This was due to the increased number of grain boundaries, which raised the potential corrosion initiation sites, and certain grain boundaries promoting chromium dissolution, thus enhancing IGC.

中文翻译：

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冷锻316不锈钢在熔融FLiNaK盐中的腐蚀机理

本研究研究了冷锻 (CF) 如何影响 316 不锈钢 (SS) 在 700 °C 熔融 FLiNaK 盐中 48 小时的腐蚀。 CF 样品有两个腐蚀区域：一个靠近顶部，另一个显示晶间腐蚀 (IGC)。 CF 较低 (5-30%) 的样品显示出更多的 IGC，而 50% CF 样品的 IGC 较少，但腐蚀深度最浅。这是由于晶界数量增加，从而提高了潜在的腐蚀起始位点，并且某些晶界促进了铬溶解，从而增强了 IGC。