预氧化温度对Ni-15Cr-5Al-5Si合金抗高温循环氧化性能的影响
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摘要
采用粉末冶金方法制备Ni-15Cr-5Al-5Si(质量分数/%)合金,经不同温度(500,700,900,1 100℃)预氧化处理后,在1 100℃进行了循环氧化试验,研究了预氧化温度对该合金抗高温(1 100℃)循环氧化性能的影响,并与未添加硅的Ni-15Cr-5Al合金进行了对比。结果表明:Ni-15Cr-5Al-5Si合金的抗高温循环氧化性能显著优于Ni-15Cr-5Al合金的;预氧化处理可以提高合金的抗高温循环氧化性能,随预氧化温度的升高,抗高温循环氧化性能提高,但提高效果不明显。
Ni-15Cr-5Al-5Si(mass fraction/%)alloy was prepared by powder metallurgy method.After preoxidation at different temperatures(500,700,900,1 100℃),cyclic oxidation tests were carried out on the alloy at 1 100℃.The effect of pre-oxidation temperature on the high temperature(1 100℃)cyclic oxidation resistance of the alloy was studied and compared with that of Ni-15Cr-5Al alloy without silicon addition.The results show that the high-temperature cyclic oxidation resistance of the Ni-15Cr-5Al-5Si alloy was higher than that of the Ni-15Cr-5Al alloy.Pre-oxidation improved the high-temperature oxidation resistance of the alloy.With increasing pre-oxidation temperature,the high-temperature cyclic oxidation resistance increased,but the increase effect was not obvious.
Ni-15Cr-5Al-5Si(mass fraction/%)alloy was prepared by powder metallurgy method.After preoxidation at different temperatures(500,700,900,1 100℃),cyclic oxidation tests were carried out on the alloy at 1 100℃.The effect of pre-oxidation temperature on the high temperature(1 100℃)cyclic oxidation resistance of the alloy was studied and compared with that of Ni-15Cr-5Al alloy without silicon addition.The results show that the high-temperature cyclic oxidation resistance of the Ni-15Cr-5Al-5Si alloy was higher than that of the Ni-15Cr-5Al alloy.Pre-oxidation improved the high-temperature oxidation resistance of the alloy.With increasing pre-oxidation temperature,the high-temperature cyclic oxidation resistance increased,but the increase effect was not obvious.
引文
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[2]AHMAD B.Analysis of the transient oxidation of a Ni-20Cr alloy at high temperature[J].Oxidation of Metals,1999,52(1/2):113-138.
[3]PARK S J,SEO S M,YOO Y S,et al.Effects of Al and Ta on the high temperature oxidation of Ni-based superalloys[J].Corrosion Science,2015,90(5):305-312.
[4]NIU Y,ZHANG X J,WU Y,et al.The third-element effect in the oxidation of Ni-xCr-7Al(x=0,5,10,15at.%)alloys in1atm O2at 900-1 000℃[J].Corrosion Science,2006,48(12):4020-4036.
[5]吴莹,牛焱.Si对Ni-xAl合金900℃氧化行为的影响[J].金属学报,2005,41(8):865-870.
[6]WANG S,WU Y,NI C S,et al.The effect of Si additions on the high-temperature oxidation of a ternary Ni-10Cr-4Al alloy in1atm O2at 900-1 000℃[J].Oxidation of Metals,2009,51(3):511-517.
[7]SUN D J,LIANG C Y,WANG E P,et al.The oxidation of four oxide dispersion strengthened Ni-5Al-xSi-0.2Y2O3(x=1,3,5,7wt.%)alloys in air at 1 100℃[J].Corrosion Science,2018,133(1):336-348.
[8]邱军,赵文金,苗志.预氧化对N18锆合金高温氧化行为的影响[C]//中国核科学技术进展报告.北京:中国原子能出版社,2013:359-364.
[9]李志明,钱士强,王伟,等.预氧化温度对GH3128合金抗高温循环氧化性能的影响[J].稀有金属材料与工程,2012,41(11):1980-1984.
[10]孙端君,梁春园,尚金龙,等.预氧化温度对Ni-20Cr-5Al-0.2Y2O3合金抗高温循环氧化性能的影响[J].机械工程材料,2017,41(4):39-43.
[11]ZHANG X H,ZHANG C,ZHANG Y D,et al.Effect of yttrium and aluminum additions on isothermal oxidation behavior of Tribaloy T-700 alloys[J].Corrosion Science,2014,88(6):405-415.
[12]初蕾,刘英才,梁丹维,等.Si含量对镍基合金氧化保护膜影响机制的研究[J].中国海洋大学学报(自然科学版),2011(增刊1):291-294.