Abstract The effect of Ce on the oxidation behaviour and microstructure evolution of nickel-saving austenitic heat-resistant cast steel in air at 900 °C was investigated by performing the isothermal oxidation tests. After 200 h of oxidation, the oxidation resistance of Ce-containing steel was about 20 % higher than that of Ce-free steel. In addition to its role as a reactive element, alloyed Ce slowed the rate of manganese depletion from the substrate and subsurface ferrite formation, leading to the improvement of the oxidation resistance of Ce-containing steel.

中文翻译：

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Ce对一种节镍奥氏体耐热铸钢氧化行为及组织演变的影响

摘要 通过等温氧化试验研究了Ce对900 ℃空气中含镍奥氏体耐热铸钢氧化行为及组织演变的影响。氧化200 h后，含Ce钢的抗氧化性比无Ce钢高约20%。除了作为反应元素的作用外，合金化的 Ce 还减缓了基体中锰消耗和亚表面铁素体形成的速度，从而提高了含 Ce 钢的抗氧化性。