金属学报  1983, Vol. 19 Issue (2): 118-125

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CBMS的流体动力学方程组

陈金昌;徐礼宇;彭长平

冶金工业部钢铁研究总院;冶金工业部钢铁研究总院;冶金工业部钢铁研究总院

HYDRODYNAMIC EQUATIONS OF THE PROCESS OF CHILL BLOCK MELT-SPINNING

CHEN Jinchang; XU Liyu; PEN Changpin (Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; Beijing)

陈金昌;徐礼宇;彭长平. CBMS的流体动力学方程组[J]. 金属学报, 1983, 19(2): 118-125.
, , . HYDRODYNAMIC EQUATIONS OF THE PROCESS OF CHILL BLOCK MELT-SPINNING[J]. Acta Metall Sin, 1983, 19(2): 118-125.

摘要 参考文献 相关文章 Metrics 全文: PDF(557 KB)   摘要: 本文由粘性流体动力学方程组导出溶潭内涡旋、速度及温度的分布。求得合金Fe_(40)Ni_(40)P_(14)B_6的热边界层厚度ΔR_T及粘性切变层厚度ΔR_v分别是140μm及11μm。在非晶带-溶潭的交界面处淬火速率是4.6—2.3×10~6℃/s,而固化时间则是0.8—1.6×10~(-4)s。非晶宽带的厚度h与宽度b的经验公式在3—5％范围内与实验数据一致。h及b与线速度v_r之间的关系式可用近于理想冷却模型加以描述。Prandtl准数Pr=7.8×10~(-2)说明热边界层厚度比粘性切变层厚度大13倍,而Nusselt准数Nu=1—2表明非晶带-铜辊的交界面处于居间冷却状态。 Abstract：The distribution of vorticity, velocity and temperature of the melt puddle were obtained by the viscous hydrodynamic equations. It is found that the thickness of thermal gradient layer, ΔR_T, and viscous shear layer, ΔR_v, of the alloy Fe_(40)Ni_(40)P_(14)B_6 are 140 and 11μm respectively. The quench rate on the ribbon at the ribbon-melt interface is (4.6—2.3)×10~6℃/s, and the solidification time is (0.8—1.6)×10~(-4)s. The empirical equations of thickness, h, and width, b, of the amorphous wide ribbons are in accord with the experimental data in the range of 3—5%. The observed relations among h, b and wheel velocity, ν_r, are well described by the model of nearly ideal cooling. The Prandtl number, Pr=7.8×10~(-2) indicating the thermal gradient layer was 13 times thicker than the viscous shear layer, and the Nusselt number, Nu=1—2 indicated intermediate cooling condition at the ribbon-wheel interface. 收稿日期: 1983-02-18      服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 陈金昌 徐礼宇 彭长平 44.8K 链接本文: https://www.ams.org.cn/CN/      或      https://www.ams.org.cn/CN/Y1983/V19/I2/118 1 Hasegawa, R.; Handley, R. C. O., Rapidly Quenched Metals, Section 1, Ed, Grant, N. J., et at., MIT, Cambridge, 1976, p. 459． 2 Gyorgy, E. M., Metallic Glasses, ASM, 1978, p. 275． 3 Grahm, C. D., Jr.; Egami, T., Ann. Rev. Mater. Sci., 8 (1978) , 423． 4 Liebermann, H. H., IEEE Trans., Magn., MAG-15 (1978) , 1393． 5 Ruhl, R. C., Mater. Sci. Eng., 313 (1967) , 1． 6 Anthony, T. R.; Cline, H. E., J. Appl. Phys., 50 (1979) , 245． 7 Cline, H. E.; Anthony, T. R., ibid., 50 (1979) , 239． 8 Cline, H. E.; Anthony, T. R., ibid., 49 (1978) , 829． 9 Kavesh, S., Metallic Glasses, ASM, 1978, p. 36． 10 Schlichting, H., Boundary Layer Theory, McGraw-Hill, New York, 1960, Chap. 2． 11 Walter, J. D., Rapidly Quenched Metals Ⅲ, Vol. 1, Ed. Cantor, B., The Metals Society, London, 1978, p. 30． 12 Hillmann, H.; Hilizinger, H. R., ibid., p. 22． 13 Davies, H. A., ibid., p. 1． 14 陈金昌;徐礼宇;马洪良;彭长平;毛向华,钢铁研究总院学报,2(1982) ,№1,p.45． 15 Jones, H., Rep. Prog. Phys., 36 (1973) , 1425．X No related articles found! Viewed Full text Abstract Cited   Shared      Discussed