CERIUM-INDUCED GRAIN BOUNDARY STRENGTHENING OF Ni_3Al ALLOYS

Abstract

Abstract: The infiuence of cerium on grnin boundaries of polycrpstalline N3Al alloys has beenstudied. The ja6mcability of a Ce-doped N3Al alloy strongly depends on the certumcontent. The alloy exhibits very poor fabrica6ility and cannot be fabrtcated into goodsheet8 by cold rolling when the concentmtion of cerium is <0. 0088wt% or>0.044wt%.A 0.011wt%Ce-doped N3Al alloy exhibits relatively good fabricability and may be fab-ricated into useful sheets by repeated cold rolling with 1OOa C annealing. The ductilityof the alloy strongly depends on the cerium distribution. Wthout the grain boundaryprecipitation of a second phase containing cer1um) the higher the segmpation level ofcerzum, the 6ettcr the tensile properties of the alloys, and in turn the more enhancedthe grain boundary cohesion.

Key words: segregation, Ni_3Al alloy, ductility, fabrication, cerium

Z.X. Yuan;S.H. Song;T.H. X.i;X.J. Zhangand Z.S. Yu(Department of Material, Wuhan Ye in University of Science and Technology, Wuhan 430081, China)(Department of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China). CERIUM-INDUCED GRAIN BOUNDARY STRENGTHENING OF Ni_3Al ALLOYS[J]. Acta Metallurgica Sinica (English Letters), 1997, 10(4): 349-357.

References

1 K. Aoki and O. Izumi, Nippon Kinzoku Gakkaishi 43 (1979) 1190.
2 A.I. Taub, S.C. Huang and K.M. Chang, Metall. Trans. 15A (1984) 399.
3 C.T. Liu, C.L. White and J.A. Horton, Acta Metall. 33 (1985) 213.
4 P.S. Khadklkar, K. Vedula and B.S. Shaole, Metall. Trons. 18A (l987) 425.
5 M.H. Yoo, S.L. Sass et al., Acta Metall. Mater. 41 (1993) 987.
6 M. Hansen, Constitution of Binary Alloys (McGraw-Hill, New York, 1958) p.119.
7 B.A. Dulmaine, In High-tempemture Orkered Intermetallic Alloy. 11 (Proc. Conf) Boston, Massachusetts, USA (Materials Research Society, Pittsburgh, Pennsylvania, USA, 1988) p.597.
8 K. Aoki and O. Izumi, Truns. Jpn. Inst. Met. 19 (1978) 203.
9 J.A. Horton and M.K. Miller, Acta Metall. 35 (1987) 133.
10 S.H. Song, Z.X. Yuan et al., Scr. Metall. Mater. 24 (1990) 1957.
11 A. Choudhury, C.L. White et al., Acta Metall. Mater. 40 (1992) 57.
12 Z.S. Yu, Rare Earths in Steels (Metallurgical Industry Press, Beijing, 1984).
13 Y.S. Yang and H.L. Zou, Acta Metall. Sin. 19 (1983) A18.
14 Z.X. Yuan, S.H. Song, R.G. Faulkner and T.D. Xu, Acta Metall. Mater. 42 (1994) 127.
15 W.P. Cai, J. Phys. Condens. Matter. 5 (1993) L531.
16 Z.X. Yuan, S.H. Song et al., J. Mater. Sci. Lett. 13 (1994) 1717.
17 C.L. Briant and R.P. Messmer, Philos. Mag. B12 (1980) 569.
18 R.P. Messmer and C.L. Briant, Acta Metall. 30 (1982) 457.
19 H. Ohtahi et al., Metall. Trans. 7A (1976) 1123.
20 S.H. Song, T.D. Xu et al., Scr. Metall. 23 (1989) 1291.
21 D. McLean, Grain Boundaries in Metals (Oxford University Press, London, 1957) p.118.
22 S.H. Song and T.D. Xu, J. Mater. Sci. 29 (1994) 61.
23 S.H. Song, R.G. Faulkner et al., J. Mater. Sci. Lett. 13 (1994) 1007.
24 P. Doig and P.E.J. Flewitt, Metall. Trans. 18A (1987) 399.
25 A.R. Paul and R.P. Agarwala, Metall. Trans. 2 (1971) 2691.
26 N.Q. Lam, P.R. Okamoto and H. Wiedersich, J. Nucl. Mater. 74 (1978) 101.
27 T.D. Xu, S.H. Song et al., Acta Metall. Mater. 39 (1991) 3119..
28 T. Ogura, Trans. Jpn. Inst. 22 (1981) 109.

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