Abstract
The character of heat flow in welding determines the nature of the weld thermal cycle and hence, in the case of transformable alloys, the microstructure of the weld metal and heat-affected zone. Mass flow, which encompasses the flow of plasma in the arc column, the flow of metal from electrode to weld pool, and the flow of metal in the weld pool itself, has less influence on the metallurgy of the joint. Irregularities or instabilities in mass flow may, however, limit the usefulness and range of application of specific processes and may cause irregularities in the heat-flow pattern.
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Further Reading
General
American Welding Society 1976. Welding handbook, 7th edn, Section 1. Miami: AWS; London: Macmillan.
Mass flow
Lancaster, J. F. Mass flow in fusion welding. IIW Documents 212–429-78 and 212–409-77.
Murty, G. S. Instability of conducting fluid cylinder due to axial current. Archiv för Fysik, band 18, no. 14, 241–50.
Murty, G. S. Instability of a conducting fluid cylinder in the presence of an axial current, a longitudinal magnetic field and a coaxial conducting cylinder. Archiv för Fysik, band 19, 483.
Heat flow
Carslaw, H. S. and J.C. Jaeger 1959. Conduction of heat in solids. Oxford: Clarendon Press.
Christensen, N. V. de L. Davies and K. Gjermundsen 1965. Distribution of temperatures in arc welding. Brit. Welding J. 12, 54–74.
Rykalin, N. N. 1961. Berechnung de Wärmervorgünge beim Schweissen. Berlin: VEB Verlag Technik.
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© 1980 J. F. Lancaster
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Lancaster, J.F. (1980). Mass and heat flow in welding. In: Metallurgy of Welding. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-9506-8_3
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DOI: https://doi.org/10.1007/978-94-010-9506-8_3
Publisher Name: Springer, Dordrecht
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