Abstract
The high temperature oxidation behavior of the single-crystal Ni-base superalloy with higher Cr contents was investigated at 900 and 1050 °C in air by using SEM, XRD, and SEM/EDAX. The results show that the mass gain rapidly increases in the initial stage of oxidation at high temperature, and the oxidizing process is mainly controlled by the formation of Cr2O3 and Al2O3 phases. The obvious process of the surface oxidation, internal oxidation and internal nitridation in the alloy occurs during oxidation at high temperature. And the poor-aluminum but rich-tantalum areas appear above the internal oxides layer. The phase containg Ta-richer may restrain the element Al in the matrix diffusing outward, which restrains the growth up of the oxide scales.
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Krupp U., and Christ H.J., Selective oxidation, and internal nitridation during high-temperature exposure of single crystalline nickel-base superalloys, Metell. Mater. Trans. A, 200, 31: 47.
Zhou Anli, Liu Zeyao, and Ye Guosheng, Influence of prolonged ageing about stability of DD4 single crystal superalloy, J. Mater. Eng., 1997, 11: 8.
Wang Kaiguo, Li jiarong, and Cao Chunxiao, Present situation of study on creep behavior of single crystal superalloys, J. Mater. Eng., 2004, 1: 3.
Mei ling, Xun Xiaofeng, Hu Wangyu, Guan Hengrong, and Chen Shuguan, Hot corrosion of a single crystal Ni-base superalloy by Na-salts at 900 °C, Oxid. Met., 2006, 65(1/2):137.
Teng Hao, Yin Zhimin, Zhu Yuanzhi, Huang Jiwu, and Zhang Baosheng, High temperature oxidation behavior of Ni76Cr19AlTi superalloy, Chin. J. Nofer. Met., 2006, 16(5):896.
Chen J.H., Rogers P.M., and J.A., Oxidation behavior of several chromia-forming commercial nickel-base superalloys, Oxid. Met., 1997, 147(5/6): 382.
Li M.H., Sun X.F., Li J.G., Zhang Z.Y., Jin T., Guan H.R., and Hu Z.Q., Oxidation behavior of a single crystal Ni-base superalloy in air at 800 and 900 °C, Oxid. Met., 2003, 59(5/6): 593.
Wallwork G.R., and Hed A.Z., Some limiting factors in the use of alloys at high temperatures, Oxid. Met., 1971, 3(2): 180.
Li Weiyin, Liu Hongfei, and Zhao Shuangqun, Oxidation behavior of a new Ni-base superallou at 900 °C, Tran. Mate. Heat Treat., 2008, 29(3): 28.
Tian Sugui, Zhang Luting, Yang Hongcai, Hu Zhuangqi, and Li Tiefan. Kinetic features of high temperature oxidation for a single crystal Ni-base superalloy, Chin. J. Mater. Res., 2002, 16(2): 186.
Du Hongqiang, Tian Sugui, Yu Xingfu, Lu Xudong, and Wang Qimin, Influences of NiCoCrAlYSi coating on high temperature oxidation characteristic of a single crystal nickelbase superalloy, Rare Met. Mater. Eng., 2008, 37(9): 1555.
Geng Shujing, Wang Fuhui, and Sheng Long, Hot corrosion behavior of cast IN738 alloy and its sputtered nanocryatalline coating, J. of Chin. Society for Corros. Protec., 2001, 21(3):140.
Liu Peisheng, Sun Xiaofeng, and Guan Hengrog, Internal oxidation of Co-base superalloy DZ40M at high temperature, Mater. Sci. & Technol., 1998, 6(1): 27.
Huang L., Sun X.F., Guan H.R., and Hu Z.Q., Oxidation behavior of a single-crystal Ni-base superalloy in air at 900, 1000 and 1100 °C, Tribology. Lett., 2006, 23(1): 22.
Zhao Yue, Yang Gongxian, Yuan Chao, Guo Jianting, and Liu Changsheng, Isothermal oxidation behavior of a cast Ni-base superalloy K447, Corros Sci. Prot. Technol., 2007, 27(1): 3.
Orosz R., Krupp U., Christ H.J., and Monceau D., The influence of specimen thickness on the high temperature corrosion behavior of CMSX-4 during thermal-crycling exposure, Oxid. Met., 2007, 68: 170.
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Lu, X., Tian, S., Yu, X. et al. Oxidation behavior of a single-crystal Ni-base superalloy in air at 900 and 1050 °C. Rare Metals 30 (Suppl 1), 439–442 (2011). https://doi.org/10.1007/s12598-011-0320-7
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DOI: https://doi.org/10.1007/s12598-011-0320-7