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| STRUCTURAL INHOMOGENEITY AND CRYSTALLIZED METASTABLE PHASE OF BNi2 RIBBON RAPIDLY QUENCHED FROM ITS MELT |
| by WU yukun (Institute of Metal Research; Academia Sinica; Shenyang) |
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Cite this article:
by WU yukun (Institute of Metal Research; Academia Sinica; Shenyang). STRUCTURAL INHOMOGENEITY AND CRYSTALLIZED METASTABLE PHASE OF BNi2 RIBBON RAPIDLY QUENCHED FROM ITS MELT. Acta Metall Sin, 1986, 22(4): 102-156.
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Abstract By using X-ray diffraction and TEM techniques, result has been shown that the inside of single roll quenched ribbon of BNi2 alloy, namely, Ni_(70)Cr_7-Fe_3Si_8B_(12) is amorphous but both the free and roll sides of this amorphous ribbon consist of Ni crystals with a preferred orientation of 111 parallel to the ribbon surface This structural inhomogeneity implys that the momentum transport mechanism plays an important role during the solidification process of this ribbon In addition, the unknown metastable phase appeared on the second stage of crystallization is a fcc phase with a≈1.04 nm of M_(23)B_6 type.
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Received: 18 April 1986
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3 Shingu, P. H,; Kobayashi, K.; Suzuki, R., ibid., p. 57．
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8 Davies, H.A., Rapidly Quenched Metals Ⅲ, vl, Ed. Cantor, B., Metal Soc., London, 1978, p.1．
9 Hagiwara, M.; Inoue, A.; Tomioka, H.; Masumoto, T., Proc. 4th Int. Conf. on Rapidly Quenched Metals, Vol. 1, (Sendai, 1981) , Eds. Masumoto, T.; Suzuki, K., JIM. 1982, p. 115．
10 JCPDS卡片19-613．
11 吴玉琨,第四届全国非晶态材料和物理学术讨论会文集,1985,p.136 |
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