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TECHNICAL NOTES

Fusion Zone Shapes in Electron-Beam Welding Dissimilar Metals

[+] Author and Article Information
P. S. Wei

Mechanical Engineering Department, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC e-mail: pswei@mail.nsysu.edu.tw

Y. K. Kuo

Mechanical Engineering Department, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC

J. S. Ku

Institute of Materials Science and Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC

J. Heat Transfer 122(3), 626-631 (Jan 14, 2000) (6 pages) doi:10.1115/1.1286681 History: Received July 07, 1998; Revised January 14, 2000
Copyright © 2000 by ASME
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References

Sun,  Z., and Moisio,  T., 1994, “Effect of Processing Parameters on Laser Welded Dissimilar Steel Joints,” Weld. J. (Miami), 73, pp. 63–70.
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Tinkler, M. J., Grant, I., Mizuno, G., and Gluck, C., 1983, “The Effects of Residual Impurity and Microalloying Elements on Weldability and Weld Properties,” Paper 29, The Welding Institute, Abington, UK.
Belton,  G. R., 1976, “Langmuir Adsorption, the Gibbs Adsorption Isotherm, and Interfacial Kinetics in Liquid Metal Systems,” Metall. Trans. B, 7B, pp. 35–42.
Mills,  K. C., and Keene,  B. J., 1990, “Factors Affecting Variable Weld Penetration,” Int. Mater. Rev., 35, pp. 185–216.
Chung,  F. K., and Wei,  P. S., 1999, “Mass, Momentum, and Energy Transport in Molten Pool When Welding Dissimilar Metals,” ASME J. Heat Transfer, 121, pp. 451–461.
Wei, P. S., and Chung, F. K., 2000, “Unsteady Marangoni Flow in Molten Pool When Welding Dissimilar Metals,” Metall. Mater. Trans., submitted for publication.
Wei,  P. S., and Chow,  Y. T., 1992, “Beam Focusing Characteristics and Alloying Element Effects on High-Intensity Electron Beam Welding,” Metall. Trans. B, 23B, pp. 81–90.
Tong,  H., and Giedt,  W. H., 1970, “A Dynamic Interpretation of Electron Beam Welding,” Weld. J. (Miami), 49, pp. 259s–266s.
Elmer,  J. W., Giedt,  W. H., and Eagar,  T. W., 1990, “The Transition from Shallow to Deep Penetration During Electron Beam Welding,” Weld. J. (Miami), 69, pp. 167s–176s.
Swift-Hook,  D. T., and Gick,  A. E. F., 1973, “Penetration Welding With Lasers,” Weld. J. (Miami), 52, pp. 492s–499s.
Christensen,  N., Davies,  V. de L., and Gjermundsen,  K., 1965, “Distribution of Temperatures in Arc Welding,” Br. Weld. J., 12, pp. 54–75.
Schauer,  D. A., and Giedt,  W. H., 1978, “Prediction of Electron Beam Welding Spiking Tendency,” Weld. J. (Miami), 57, pp. 189s–195s.
Heiple,  C. R., and Roper,  J. R., 1982, “Mechanism for Minor Element Effect on GTA Fusion Zone Geometry,” Weld. J. (Miami), 61, pp. 97s–102s.

Figures

Grahic Jump Location
Photographs of fusion zones in Al-Fe welding with accelerating voltage 50 kV, welding speed 0.04 m/s, and welding currents of (a) 12 mA, and (b) 20 mA
Grahic Jump Location
(a) Fusion zone, and concentration profiles at (b) upper, (c) intermediate, and (d) lower locations in Al-Fe welding with beam power 1000 W and welding speed 0.045 m/s
Grahic Jump Location
Photographs of fusion zones in (a) Al-Al, and (b) Fe-Fe welding with accelerating voltage 50 kV, welding current 20 mA, and welding speed 0.04 m/s
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Photographs of fusion zones in Fe-Cu welding with accelerating voltage 50 kV, welding speed 0.025 m/s, and welding current of (a) 20 mA, and (b) 30 mA
Grahic Jump Location
(a) Fusion zone, and concentration profiles at (b) upper and (c) lower locations in Fe-Cu welding with beam power 1000 W and welding speed 0.04 m/s
Grahic Jump Location
Measured and predicted dimensionless beam power versus Peclet number for different beam powers in Fe-Cu welding
Grahic Jump Location
Measured and predicted dimensionless beam power versus Peclet number for Al in Al-Fe welding with different beam powers
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Measured and predicted Peclet number versus square root of operating parameter for Fe in Al-Fe welding with different beam powers

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