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| SOLUTION AND TRANSFORMATION OF Ni_5Zr IN CAST NICKEL-BASE SUPERALLOY |
| by Ma Shuqin; Zheng Yunrong and Cai Yulin(Institute of Aeronautical Materials) |
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Cite this article:
by Ma Shuqin; Zheng Yunrong and Cai Yulin(Institute of Aeronautical Materials). SOLUTION AND TRANSFORMATION OF Ni_5Zr IN CAST NICKEL-BASE SUPERALLOY. Acta Metall Sin, 1981, 17(5): 522-602.
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Abstract Studies were made of the solution and transformation of intermetallic compound Ni_5Zr in Zr-bearing cast Ni-base superalloy and of effect of the Zr addition on the microstructure by DTA together with metallographic observation. The occurrence of Ni_5Zr in the superalloy may markedly decrease the incipient melting temperature and induce the solution of γ+γ′eutectic. Under high temperature exposure above 850℃, Ni_5Zr with γ (C) is transformed into ZrC and γ, which is bound to be reflected in DTA.
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Received: 18 May 1981
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[1] Antony, K. C. and Radavich, J. F., Superalloys: Metallurgy and Manufacture, Proc. 3rd Int. Symp. on Superalloys, 1976, Ed. by B. H., Kear, D. R. Muzyka, J. K. Tien, et al., Claitor's Pub., Baton Rouge, Louisiana, 1976, p. 137．
[2] 航空材料研究所,未发表资料.
[3] Wendlandt, W. W., Thermal Methods of Analysis, Wiley, New York, 1974, p. 134．
[4] Zheng, Y. R. and Cai, Y. L., Superalloys 1980, Proc. 4th Int. Symp. on Superalloys, Ed. by J. K. Tien, S. T. Wlodek, H. Morrow Ⅲ, et al., ASM Metals Park, Ohio, 1980, p. 465． |
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