The oxidation behaviour of an austenitic stainless Fe–14.29Mn–5.57Si–8.23Cr–4.96Ni (wt%) shape memory alloy was investigated in air at 600 °C and 700 °C. The results showed that the oxidation process obeyed the parabolic rate law at both temperatures. At 700 °C, the final oxide scales were composed of an outer Mn2O3 layer, a middle Mn3O4 layer, and an inner MnCr2O4 layer. The scale consisted of only Mn2O3 at 600 °C. A composite structure of ferrite and austenite phases was obtained after oxidation at 600 °C and 700 °C because an oxidation-induced Mn-depleted layer formed.

中文翻译：

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温度对奥氏体不锈钢 FeMnSiCrNi 形状记忆合金氧化行为的影响

研究了一种奥氏体不锈钢 Fe–14.29Mn–5.57Si–8.23Cr–4.96Ni (wt%) 形状记忆合金在 600 °C 和 700 °C 空气中的氧化行为。结果表明，氧化过程在两种温度下均符合抛物线速率规律。在 700 °C 时，最终氧化皮由外层 Mn2O3、中层 Mn3O4 和内层 MnCr2O4 组成。在 600 °C 时，水垢仅由 Mn2O3 组成。由于形成了氧化诱导的 Mn 耗尽层，在 600°C 和 700°C 氧化后获得铁素体和奥氏体相的复合结构。