High temperature oxidation of γ/γ′-strengthened Co-base superalloys

被引：184
作者：
Klein, L. [1 ]
Bauer, A. [2 ]
Neumeier, S. [2 ]
Goeken, M. [2 ]
Virtanen, S. [1 ]
机构：
[1] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, Inst Surface Sci & Corros WW4, D-91058 Erlangen, Germany
[2] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, Inst Gen Mat Properties WW1, D-91058 Erlangen, Germany
来源：
CORROSION SCIENCE | 2011年 / 53卷 / 05期
关键词：
Alumina; Boron; Co-base superalloy; High-temperature oxidation; Oxide layer; BORON; ALLOYS;
D O I：
10.1016/j.corsci.2011.02.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Isothermal oxidation was carried out on new gamma/gamma ' Co-base superalloys of the system Co-Al-W-B. Appropriate B-contents lead to improved oxidation resistance and oxide layer adhesion. Oxidation at 800 and 900 degrees C results in formation of Co3O4, CoO, and complex oxides (containing Co, Al, and W). A continuous and protective inner alumina layer forms only at 800 degrees C. Furthermore, oxidation leads to phase transformation (gamma/gamma ' to gamma/Co3W microstructure) at the matrix/oxide layer interface due to Al-depletion. The effect of additional alloying elements such as Ta, Cr, Nb, Si, V. Mo, and It on the oxidation behaviour was also investigated. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2027 / 2034
页数：8
相关论文
共 17 条
  • [1] Microstructure and creep strength of different γ/γ′-strengthened Co-base superalloy variants
    Bauer, A.
    Neumeier, S.
    Pyczak, F.
    Goeken, M.
    [J]. SCRIPTA MATERIALIA, 2010, 63 (12) : 1197 - 1200
  • [2] Beltran A., 1987, Superalloys, VII
  • [3] COBALT-BASED SUPERALLOYS FOR APPLICATIONS IN GAS-TURBINES
    COUTSOURADIS, D
    DAVIN, A
    LAMBERIGTS, M
    [J]. MATERIALS SCIENCE AND ENGINEERING, 1987, 88 : 11 - 19
  • [4] Holleman A. F., 2007, LEHRBUCH ANORGANISCH, P1548
  • [5] THE ROLE OF BORON IN DUCTILIZING NI3AL
    KHADKIKAR, PS
    VEDULA, K
    SHABEL, BS
    [J]. METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1987, 18 (03): : 425 - 428
  • [6] Determination of phase equilibria in the Co-rich Co-Al-W ternary system with a diffusion-couple technique
    Kobayashi, Satoru
    Tsukamoto, Yuki
    Takasugi, Takayuki
    Chinen, Hibiki
    Omori, Toshihiro
    Ishida, Kiyohito
    Zaefferer, Stefan
    [J]. INTERMETALLICS, 2009, 17 (12) : 1085 - 1089
  • [7] Oxidation behavior of a Single-crystal Ni-base superalloy in air.: I:: At 800 and 900°C
    Li, MH
    Sun, XF
    Li, JG
    Zhang, ZY
    Jin, T
    Guan, HR
    Hu, ZQ
    [J]. OXIDATION OF METALS, 2003, 59 (5-6): : 591 - 605
  • [8] Analytical Electron Microscopy Study of Boron-Rich Grain Boundary Microconstituent in Directionally Solidified RENE 80 Superalloy
    Ojo, O. A.
    Zhang, H. R.
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2008, 39A (12): : 2799 - 2803
  • [9] Olson G.B., 1987, Innovations in Ultrahigh-Strength Steel Technology, volume 34 of Sagamore Army Materials Research Conference, P3
  • [10] New Co-based γ-γ′ High-temperature Alloys
    Pollock, T. M.
    Dibbern, J.
    Tsunekane, M.
    Zhu, J.
    Suzuki, A.
    [J]. JOM, 2010, 62 (01) : 58 - 63
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