共晶自生复合材料的晶形转变

金属学报

1988, Vol. 24

Issue (4): 365-367

论文

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共晶自生复合材料的晶形转变

任志锋;张承甫

华中工学院;教授;武汉华中工学院铸造教研室

TRANSFORMATION OF CRYSTAL MORPHOLOGY OF EUTECTIC COMPOSITE-IN-SITU

REN Zhifeng;ZHANG Chengfu Huazhong University of Science and Technology; WuhanDivision of Casting; Huazhong University of Science and Technology; Wuhan

引用本文:

任志锋;张承甫. 共晶自生复合材料的晶形转变[J]. 金属学报, 1988, 24(4): 365-367.
, . TRANSFORMATION OF CRYSTAL MORPHOLOGY OF EUTECTIC COMPOSITE-IN-SITU[J]. Acta Metall Sin, 1988, 24(4): 365-367.

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摘要: 自生复合材料的晶形转变受到成分过冷与曲面过冷两个因素的控制.非金属相具有较大的熔化熵且易形成小平面是改变领先相的因素,而领先相的改变则可能是晶形转变的根本原因.

关键词 ：自生复合材料, 平面晶, 胞状晶, 成分过冷, 曲面过冷

Abstract：It is clarified by experimental examination and theoretical analysis that the trans-formation of crystal morphology of the eutectic Al-Cu alloy composite-in-situ seems to be judgedby not only the constitutional supercooling proposed in previous literatures but also the supercoolingdue to the effect of curved surfaces at the solidifying front. The greater entropy of fusion and thetendency to faceted face are important features of the non-metallic phase, which may contributeto the leading role of the phase during solidification. It might be the change of leading phase thatchanges the morphology of crystals.

Key words： composite-situ planar crystal cellular crystal constitutional suppercooling curvature supercooling

收稿日期: 1988-04-18

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1 Chadwick G A, Met B. J Inst Met, 1962&1963: 91: 169
2 Kraft R W, Albright D L. Trans AIME, 1961: 221: 95
3 Pattnaik A, Lawley A. Metall Trans, 1971; 2: 1529
4 Pattnaik A, Lawley A. Proc Conf In-Situ Composites I. NMAB Pub, 308-I. Wash D C. 1973: 281
5 胡汉起,金属凝固.冶金工业出版社,1985:269
6 张承甫,肖理明,张军,黄志光.铸造工程,1983;(1) :13
7 Jordan R M, Hunt J D. Metall Trans, 1972; 3: 1385

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