ABSTRACT The influence of frequency of thermal cycling on the oxidation behaviour of alloys TP446, TP310, and Inconel 617 in dry air at very high temperatures (871°C and 982°C) is reported. The effects on the iron-basedalloys were complex, whereas that of the Ni-based alloy was not greatly affected by cycling frequency. Unexpected trends were increased oxidation rates of TP310 and Inconel 617 with increased cycle frequency at 871°C, whereas those of TP446 decreased. At 982°C, the oxidation rates of TP310 and TP446 decreased with increasing cycle frequency, though less so for TP310. While the scales formed on the iron-based alloys consisted of a basal layer corresponding to chromia containing Mn, and an outer layer corresponding to manganese chromate, differences in the rates of transport of Cr, Mn and Si in the alloys at the different temperatures appeared to account in large measure for the differences in response to thermal cycling.

中文翻译：

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TP446、TP310和IN617在871℃和982℃空气中的循环氧化行为

摘要 报告了热循环频率对 TP446、TP310 和 Inconel 617 合金在干燥空气中高温（871°C 和 982°C）氧化行为的影响。对铁基合金的影响是复杂的，而镍基合金对循环频率的影响不大。出乎意料的趋势是 TP310 和 Inconel 617 的氧化速率增加，在 871°C 下循环频率增加，而 TP446 的氧化速率降低。在 982°C 时，TP310 和 TP446 的氧化速率随着循环频率的增加而降低，但 TP310 的氧化速率较小。虽然在铁基合金上形成的鳞片由对应于含有 Mn 的氧化铬的基底层和对应于铬酸锰的外层组成，但 Cr 的传输速率不同，