FeAl基合金的高温抗氧化性能分析
Analysis on Oxidation Resistance of FeAl System Alloy at High-temperature
刘祥荣1, 张树增1, 姜锦程2
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作者单位：1. 北京化工大学 化学工程学院, 北京 100029; 2. 北京科技大学 材料科学与工程学院, 北京 100083
中文关键字：FeAl基合金； 抗氧化性能
英文关键字： FeAl system alloy; oxidation resistance
中文摘要：设计了二组化学成分不同的FeAl基合金，进行了1000 ℃的高温氧化试验，并对其进行了分析。结果表明，含碳量较高的材质较普通FeAl基合金的硬度高；B元素改善晶界脆性，Zr使晶界固溶强化，提高了材料的冲击韧度和抗拉强度；1000 ℃下，含碳量较低的FeAl基合金呈完全抗氧化性，其循环氧化动力学曲线均服从抛物线规律。
英文摘要：The two kinds of FeAl system with different chemical composition were designed, and its properties of oxidation resistance were analyzed by oxidation test at 1000 ℃. The results show that the material containing high percentage of carbon has higher hardness than ordinary FeAl system alloy; B element can improve grain boundary embrittlement, Zr makes the grain boundary solution-strengthen, the impact toughness and tensile strength of the alloy are improved. FeAl alloy with less C content has complete oxidation resistance below 1000 ℃, and its oxidation kinetic curve obeys parabola law.