Materials at High Temperatures ( IF 1.0 ) Pub Date : 2020-08-27 Ian Gordon Wright
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:
TP446,TP310和IN617在871°C和982°C的空气中的循环氧化行为
据报道,在极高的温度(871°C和982°C)下,热循环频率对TP446,TP310和Inconel 617合金在干燥空气中的氧化行为的影响。对铁基合金的影响很复杂,而镍基合金的影响不受循环频率的很大影响。出乎意料的趋势是TP310和Inconel 617的氧化速率增加,并在871°C下增加了循环频率,而TP446的氧化速率却下降了。在982°C下,TP310和TP446的氧化速率随循环频率的增加而降低,但TP310的氧化速率则较小。虽然在铁基合金上形成的氧化皮由对应于含Mn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,