辽宁科技大学材料与冶金学院,鞍山 114051
秦墨周(2001—),男,本科;E-mail: qmz010807@163.com
赵广迪(1989—),男,博士,副教授;E-mail: gdzhao12 s@alum.imr.ac.cn
收稿:2023-05-26,
纸质出版:2024-01-30
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秦墨周,赵广迪,武金江等.镍基高温合金U720Li在750 ℃不同氧化阶段的恒温氧化行为[J].特殊钢,2024,45(01):12-17.
Qin Mozhou,Zhao Guangdi,Wu Jinjiang,et al.Isothermal Oxidation Behavior of Nickel-based Superalloy U720Li in Different Oxidation Stages at 750 ℃[J].Special Steel,2024,45(01):12-17.
秦墨周,赵广迪,武金江等.镍基高温合金U720Li在750 ℃不同氧化阶段的恒温氧化行为[J].特殊钢,2024,45(01):12-17. DOI: 10.20057/j.1003-8620.2023-00093.
Qin Mozhou,Zhao Guangdi,Wu Jinjiang,et al.Isothermal Oxidation Behavior of Nickel-based Superalloy U720Li in Different Oxidation Stages at 750 ℃[J].Special Steel,2024,45(01):12-17. DOI: 10.20057/j.1003-8620.2023-00093.
航空发动机涡轮盘服役温度的不断升高,对材料的抗氧化性能提出了更严苛的要求。U720Li合金是一种具有较高承温能力的涡轮盘用镍基高温合金,其长期服役温度高达750 ℃。阐明该合金在服役温度下的氧化行为,对延长涡轮盘的服役寿命具有重要意义。本文采用静态增重法测定了锻态U720Li合金在750 ℃的氧化动力学曲线,用XRD、SEM-EDS等手段分析了不同氧化阶段的氧化膜形貌、结构及元素分布。结果表明,U720Li合金在其服役温度下具有优异的抗氧化性能,在750 ℃的恒温氧化动力学曲线大致遵循立方规律,达到了完全抗氧化级别。分析认为,U720Li合金在氧化初期生成了疏松的γ-Cr
2
O
3
,随着氧化的进行,γ-Cr
2
O
3
层不断剥落,氧化膜变得更加连续致密并形成复杂多层结构,且在氧化膜附近基体内形成γ´贫化层。在稳定氧化阶段,氧化膜更加连续致密并形成规整的双层结构,包括致密的α-Cr
2
O
3
外氧化层和α-Al
2
O
3
内氧化层。连续致密的α-Cr
2
O
3
和α-Al
2
O
3
层的形成能够有效阻止氧的内扩散及合金元素的外扩散,保障了U720Li合金的优异抗氧化性能。
The increasing service temperature of aero-engine turbine discs makes more stringent requirements for oxidation resistance of the materials. U720Li alloy is a high-strength nickel-based superalloy for turbine discs with a long-term service temperature up to 750 ℃. Clarifying the oxidation behavior at service temperatures of this alloy is of great significance for improving the service life of high-performance turbine discs. In this paper, the oxidation kinetics curve of forged U720Li alloy at 750 ℃ has been determined by the static weight gain method, and the oxide film morphology, structure and element distribution in different oxidation stages were analyzed by XRD and SEM-EDS. The results show that the U720Li alloy has excellent oxidation resistance at its service temperature, and its isothermal oxidation kinetic curve at 750 ℃ basically follows the cubic law, reaching the full anti-oxidant level. It has been analyzed that the loose γ-Cr
2
O
3
is generated at the early oxidation stage of U720Li alloy. The γ-Cr
2
O
3
layer spalls continuously as the oxidation proceeds, and the oxide film becomes more continuous and dense and forms a complex multilayer structure. Meanwhile, a γ´ depleted layer is gradually formed within the matrix nearby the oxide film. In the stable oxidation stage, the oxide film becomes more continuous and dense, forming a regular double-layer structure which includes the dense α-Cr
2
O
3
outer layer and α-Al
2
O
3
inner layer. The formation of continuous dense α-Cr
2
O
3
and α-Al
2
O
3
layers can effectively prevent the internal diffusion of oxygen and external diffusion of alloying elements, which guarantees the excellent oxidation resistance of U720Li alloy.
Reed R C . The Superalloys: Fundamentals and Applications [M]. Cambridge , UK : Cambridge University Press , 2006
Sims C T , Stoloff N S , Hagel C W . Superalloys II [M]. John Wiley & Sons , New York , 1987 .
Kim S E , Jackson M P , Reed R C , et al . Quantification of the minor precipitates in UDIMET™ alloy720 (LI) using electrolytic extraction and X-ray diffraction [J]. Materials Science and Engineering: A , 1998 , 245 ( 2 ): 225 - 232 .
Zhao G D , Yu L X , Yang G L , et al . The role of boron in modifying the solidification and microstructure of nickel-base alloy U720Li [J]. Journal of Alloys and Compounds , 2016 , 686 : 194 - 203 .
曾莉 , 王斌 , 徐梅 , 等 . 硼对奥氏体不锈钢高温氧化性能的作用机理 [J]. 特殊钢 , 2023 , 44 ( 2 ): 61 - 64 ..
江河 , 董建新 , 张麦仓 , 等 . 800 ℃以上服役涡轮盘用难变形镍基高温合金研究进展 [J]. 航空制造技术 , 2021 , 64 ( S1 ): 62 - 73 .
Jiang R , Reed P A S . Critical Assessment 21: oxygen-assisted fatigue crack propagation in turbine disc superalloys [J]. Materials Science and Technology , 2016 , 32 ( 5 ): 401 - 406 .
金一标 , 姚钰明 , 李亚军 , 等 . 300 kg真空感应炉熔炼08Cr9CoMo钢的氧含量研究 [J]. 特殊钢 , 2021 , 42 ( 6 ): 19 - 24 .
Xu C , Yao Z H , Dong J X , et al . Mechanism of high-temperature oxidation effects in fatigue crack propagation and fracture mode for FGH97 superalloy [J]. Rare Metals , 2019 , 38 ( 7 ): 642 - 652 .
Tucker A M , Henderson M B , Wilkinson A J , et al . High temperature fatigue crack growth in powder processed nickel based superalloy U720Li [J]. Materials Science and Technology , 2002 , 18 ( 3 ): 349 - 353 .
Giggins C S . Oxidation of Ni-Cr-Al Alloys Between 1 000 ℃ and 1 200 ℃ [J]. J. Electroch-emSoc , 1971 , 118 ( 11 ): 1782 - 1790 .
Amaro R L , Antolovich S D , Neu R W , et al . High temperature oxidation and γ′ depletion in the single-crystal superalloy PWA 1484 [J]. Materials at High Temperatures , 2016 , 33 ( 4-5 ): 476 - 488 .
Leo Prakash D G , Walsh M J , Maclachlan D , et al . Crack growth micro-mechanisms in the IN718 alloy under the combined influence of fatigue, creep and oxidation [J]. International Journal of Fatigue , 2009 , 31 ( 11-12 ): 1966 - 1977 .
杜金辉 , 赵光普 , 邓群 , 等 . 中国变形高温合金研制进展 [J]. 航空材料学报 , 2016 , 36 ( 3 ): 27 - 39 .
Jackson M P , Reed R C . Heat treatment of UDIMET 720Li: the effect of microstructure on properties [J]. Materials Science & Engineering A , 1999 , 259 ( 1 ): 85 - 97 .
Pollock T M , Tin S . Nickel-based superalloys for advanced turbine engines: chemistry, microstructure and properties [J]. Journal of propulsion and power , 2006 , 22 ( 2 ): 361 - 374 .
Martin R , Evans D . Reducing costs in aircraft: the metals affordability initiative consortium [J]. JOM , 2000 , 52 ( 3 ): 24 - 28 .
Zhao G D , Zang X M , Qi F . Effect of boron on isothermal oxidation behavior of a nickel-base superalloy with high Al and Ti contents [J]. Journal of Alloys and Compounds , 2020 , 846 : 156490 .
王民庆 , 曲敬龙 , 殷铁志 , 等 . GH4720Li 合金高温氧化行为研究 [J]. 钢铁研究学报 , 2010 , 22 ( 9 ): 28 - 33 .
Wu Y , Narita T . Oxidation behavior of the single crystal Ni-based superalloy at 900 ℃ in air and water vapor [J]. Surface and Coatings Technology , 2007 , 202 ( 1 ): 140 - 145 .
吴梅柏 , 郭喜平 . 铌硅化物基超高温合金与石墨坩埚氧化物涂层反应的热力学分析 [J]. 稀有金属与硬质合金 , 2007 , 35 ( 1 ): 5 - 9 .
Furrer D U , Fecht H J . γ′ formation in superalloy U720LI [J]. Scripta Materialia , 1999 , 40 ( 11 ): 1215 - 1220 .
赵广迪 , 臧喜民 , 李万明 , 等 . B对一种高Al+ Ti镍基高温合金氧化行为的影响 [J]. 稀有金属材料与工程 , 2020 , 49 ( 6 ): 2109 - 2117 .
曹将栋 . 提高镍基高温合金抗氧化腐蚀性能的实验及理论研究 [D]. 镇江 : 江苏大学 , 2018
Watari F , Cowley J M . The study of oxide formation on (001),(011),(111) and (113) surfaces of Cr thin films using STEM-microdiffraction methods [J]. Surface Science , 1981 , 105 ( 1 ): 240 - 264 .
Chyrkin A , Pillai R , Galiullin T , et al . External α-Al 2 O 3 scale on Ni-base alloy 602 CA. - Part I: Formation and long-term stability [J]. Corrosion Science , 2017 ,124(Aug.): 138 - 149 .
刘立 , 赵俊学 , 李献民 , 等 . CaF 2 -CaO-Al 2 O 3 -SiO 2 -MgO五元渣的表面张力及其在镍基合金电渣重熔的应用 [J]. 特殊钢 , 2015 , 36 ( 6 ): 20 - 22 .
Jalowicka A , Nowak W , Young D J , et al . Boron depletion in a nickel base superalloy induced by high temperature oxidation [J]. Oxidation of metals , 2015 , 83 ( 3 ): 393 - 413 .
Abe F , Araki H , Yoshida H , et al . The role of aluminum and titanium on the oxidation process of a nickel-base superalloy in steam at 800 ℃ [J]. Oxidation of metals , 1987 , 27 ( 1 ): 21 - 36 .
段秀峰 , 张晶晶 , 张寿禄 , 等 . Nb和Ti对444超纯铁素体不锈钢高温氧化行为的影响 [J]. 特殊钢 , 2021 , 42 ( 4 ): 7 - 11 .
Li M H , Sun X F , Li J G , et al . Oxidation behavior of a single-crystal Ni-base superalloy in air. I: at 800 and 900 C [J]. Oxidation of Metals , 2003 , 59 : 591 - 605 .
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