一种新型Ni基单晶高温合金的高温循环氧化行为
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- 英文论文题名：High Temperature Cyclic Oxidation Behavior of a New Single Crystal Superalloy
- 论文作者：赵运兴 ; 刘军 ; 王薪 ; 江亮
- 英文论文作者：Zhao Yunxing ; Liu Jun ; Wang Xin ; Jiang Liang ; State Key Laboratory of Powder Metallurgy ; Central South University ; Powder Metallurgy Research Institute ; Central South University ; School of Materials Science and Engineering ; Central South University
- 年：2015
- 作者机构：中南大学粉末冶金国家重点实验室;中南大学粉末冶金研究院;中南大学材料科学与工程学院;
- 论文关键词：单晶高温合金 ; 循环氧化 ; 微观结构 ; 氧化层 ; γ′相消失区域
- 英文论文关键词：single crystal superalloy ; cyclic oxidation ; microstructure ; oxide scale ; γ' free area
- 会议召开时间：2015-05-20
- 会议录名称：第十三届中国高温合金年会论文集
- 英文会议录名称：Proceedings of the 13th China Superalloys Conference
- 语种：中文
- 分类号：TG132.3
- 学会代码：ZGJS
- 会议名称：第十三届中国高温合金年会
- 会议地点：中国北京
- 主办单位：中国金属学会高温材料分会
- 学会名称：中国金属学会
- 页数：4
- 文件大小：1677k
- 原文格式：O
- 会议级别：全国
摘要
研究了一种新型单晶高温合金的在1100℃和1150℃下大气环境中的高温氧化行为,一共进行了350个循环。在两个温度下,氧化层的生长速度和时间都呈类抛物线关系,这是由于在氧化层底部生成了一层致密的Al_2O_3层。采用SEM观察分析了氧化层表面形貌和氧化层截面的微观组织。使用XRD和EDS分析氧化层的成分和元素分布。在较高的温度下,生成的氧化层较厚,而且最后的重量变化也更大,表明在更高的温度下,合金的氧化抗性越差。在两个温度下,形成的氧化层都可以分为三层:最外层的NiO层,由TiO_2,Ta_2O_5和CrO组成的中间层和最内层的致密的Al_2O_3层。而且,在合金基体和氧化层之间存在一个γ′相消失区域,氧化温度越高,这个区域的厚度越厚。
The cyclic oxidation behavior of a new single crystal superalloy was investigated at 1100℃ and 1150℃,covering350 cycles in static air.A subparabolic time dependence of the growth rate of the oxide scale was detected at both temperatures due to the formation of an inner Al_2O_3 layer.The microstructure of the oxide surface and the cross section morphology were analyzed by SEM.XRD and EDS were used to identify the compositions of the oxides and element concentration.The alloy showed better resistance of oxidation at lower temperature,which can be proved by the thicker oxide scale and higher mass gain at 1150℃.The scales consist of three different layers at each temperature;A NiO containing top oxide layer,a second layer consists of TiO_2,Ta_2O_5 and CrO,an inner continuous A1_2O_3 layer close to the substrate.Moreover,a γ' free zone was detected between the oxide scale and the substrate at both temperatures.
The cyclic oxidation behavior of a new single crystal superalloy was investigated at 1100℃ and 1150℃,covering350 cycles in static air.A subparabolic time dependence of the growth rate of the oxide scale was detected at both temperatures due to the formation of an inner Al_2O_3 layer.The microstructure of the oxide surface and the cross section morphology were analyzed by SEM.XRD and EDS were used to identify the compositions of the oxides and element concentration.The alloy showed better resistance of oxidation at lower temperature,which can be proved by the thicker oxide scale and higher mass gain at 1150℃.The scales consist of three different layers at each temperature;A NiO containing top oxide layer,a second layer consists of TiO_2,Ta_2O_5 and CrO,an inner continuous A1_2O_3 layer close to the substrate.Moreover,a γ' free zone was detected between the oxide scale and the substrate at both temperatures.
引文
[1]Strengthened superalloy for gas turbine blades[J].Metal Powder Report,1992,47(10):24~28.
[2]DUHL D N.5-Single Crystal Superalloys[M]//TIEN J K,CAULFIELD T.Superalloys Supercomposites Superceramics.Academic Press.1989:149~182.
[3]GALLARDO J M,RODR GUEZ J A,et al.Failure of gas turbine blades[J].Wear,2002,252(3~4):264~268.
[4]NICHOLLS J R,SIMMS N J.1.20-Gas Turbine Oxidation and Corrosion[M]//COTTIS B,GRAHAM M,LINDSAY R,et al.Shreir's Corrosion.Oxford:Elsevier.2010:518~540.
[5]SATO A,CHIU Y L,et al.Oxidation of nickel-based single-crystal superalloys for industrial gas turbine applications[J],Acta Materialia,2011,59(1):225~240.
[6]YOO Y S,JO C Y,et al.Compositional prediction of creep rupture life of single crystal Ni base superalloy by Bayesian neural network[J].Materials Science and Engineering:A,2002,336(1~2):22~29.
[7]MACKAY R A,GABB T P,et al.Influence of composition on microstructural parameters of single crystal nickelbase superalloys[J].Materials Characterization,2012,70(0):83~100.
[8]MEIER G H,PETTIT F S.High-temperature corrosion of alumina-forming coatings for superalloys[J].Surface and Coatings Technology,1989,39~40,Part 1(0):1~17.
[9]YOUNGJ.Chapter 11 Cyclic Oxidation[M]//DAVID JOHN Y.Corrosion Series.Elsevier Science.2008:497~532.
[10]SCH TZE M,MALESSA M,et al.Development of coatings for protection in specific high temperature environments[J].Surface and Coatings Technology,2006,201(7):3872~3879.
[11]AL-HATAB K A,ALARIQI F S,et al.Cyclic Oxidation Kinetics and Oxide Scale Morphologies Developed on the IN600 Superalloy[J].Oxidation of Metals,2011,76(5~6):385~398.
[2]DUHL D N.5-Single Crystal Superalloys[M]//TIEN J K,CAULFIELD T.Superalloys Supercomposites Superceramics.Academic Press.1989:149~182.
[3]GALLARDO J M,RODR GUEZ J A,et al.Failure of gas turbine blades[J].Wear,2002,252(3~4):264~268.
[4]NICHOLLS J R,SIMMS N J.1.20-Gas Turbine Oxidation and Corrosion[M]//COTTIS B,GRAHAM M,LINDSAY R,et al.Shreir's Corrosion.Oxford:Elsevier.2010:518~540.
[5]SATO A,CHIU Y L,et al.Oxidation of nickel-based single-crystal superalloys for industrial gas turbine applications[J],Acta Materialia,2011,59(1):225~240.
[6]YOO Y S,JO C Y,et al.Compositional prediction of creep rupture life of single crystal Ni base superalloy by Bayesian neural network[J].Materials Science and Engineering:A,2002,336(1~2):22~29.
[7]MACKAY R A,GABB T P,et al.Influence of composition on microstructural parameters of single crystal nickelbase superalloys[J].Materials Characterization,2012,70(0):83~100.
[8]MEIER G H,PETTIT F S.High-temperature corrosion of alumina-forming coatings for superalloys[J].Surface and Coatings Technology,1989,39~40,Part 1(0):1~17.
[9]YOUNGJ.Chapter 11 Cyclic Oxidation[M]//DAVID JOHN Y.Corrosion Series.Elsevier Science.2008:497~532.
[10]SCH TZE M,MALESSA M,et al.Development of coatings for protection in specific high temperature environments[J].Surface and Coatings Technology,2006,201(7):3872~3879.
[11]AL-HATAB K A,ALARIQI F S,et al.Cyclic Oxidation Kinetics and Oxide Scale Morphologies Developed on the IN600 Superalloy[J].Oxidation of Metals,2011,76(5~6):385~398.