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A high-resolution-electron-microscopy study of a γ/γ′-α directionally solidified eutectic alloy

Part I The as-solidified state

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Abstract

The microstructure of a γ/γ′-α directionally solidified (DS) eutectic alloy with a nominal composition of Ni-30.26Mo-6.08Al-1.43V (wt%) was investigated by means of high-resolution electron microscopy (HREM) and analytical electron microscopy. The α-fibres exhibited a typical morphology with a rectangular cross-section and they displayed the Bain orientation relationship (OR) with the γ′/γ matrix; that is, [001]α∥[001]γ′ and (110)α∥(010)γ′. Misfit dislocations and lattice strain fields existed at the α/γ′ interface for different habit planes; that is, (110)α∥(010)γ′ and (100)α∥(110)γ′ were analysed. EDAX (Energy dispersive X-ray) analysis showed that the composition of the γ-phase was approximately Ni4(Mo, Al, V); it contained 90° rotational domains of Ni3(Mo, Al, V) with a DO22 structure and Ni2(Mo, Al, V) with a Pt2Mo structure.

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References

  1. H. Sprenger, H. Richter and J. J. Nickl, J. Mater. Sci. 11 (1976) 2075.

    Google Scholar 

  2. D. D. Pearson, B. H. Kear and F. D. Lemkey, in International Conference on Creep and the Fracture of Engineering Materials and Structures, University College, Swansea, 1981, edited by B. Wilshire and D. R. J. Owen (Pine Ridge Press, 1981) p. 213.

  3. R. E. Andersen, A. R. Cox, T. D. Tillman and E. C. Van Reuth, in Proceedings of the 2nd International Conference on Rapid Solidification Processing, Baton Rouge, LA, 1980, edited by R. Mehrabian, B. H. Kear and M. Cohen (Claitor's Publishing Division, 1980) p. 416.

  4. A. M. Sriramamurty, D. Banerjee and S. N. Tewari, Acta Metall. 30 (1982) 1231.

    Google Scholar 

  5. E. Blank, P. Henriquez and W. Funk, ibid. 37 (1989) 229.

    Google Scholar 

  6. W. Bollmann, “Crystal defects and crystalline interfaces” (Springer, Berlin, 1970).

    Google Scholar 

  7. R. W. Balluffi, A. Brokman and A. H. King, Acta Metall. 30 (1982) 1453.

    Google Scholar 

  8. P. R. Okamoto and G. Thomas, ibid. 19 (1971) 825.

    Google Scholar 

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Authors and Affiliations

  1. Laboratory of Atomic Imaging of Solids, Institute of Metal Research, Chinese Academy of Sciences, 110015, Shenyang, People's Republic of China

    J. Y. Dai, D. X. Li, H. Q. Ye, Z. X. Jin & J. H. Zhang

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  1. J. Y. Dai
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  2. D. X. Li
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  3. H. Q. Ye
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  4. Z. X. Jin
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  5. J. H. Zhang
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Dai, J.Y., Li, D.X., Ye, H.Q. et al. A high-resolution-electron-microscopy study of a γ/γ′-α directionally solidified eutectic alloy. JOURNAL OF MATERIALS SCIENCE 30, 248–252 (1995). https://doi.org/10.1007/BF00352157

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  • DOI: https://doi.org/10.1007/BF00352157

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