Abstract
Using thermodynamic data, the free energy changes for dissociation reactions of several gases are obtained at high temperature. The relationship between the partial pressures of several gases and temperature is shown under 0.1 MPa (1 atm) atmosphere. Oxygen and nitrogen absorptions into liquid iron in equilibrium state are discussed thermodynamically. The effects of the welding condition and the oxidizing gas partial pressure in the welding atmospheres of Ar — O2 and Ar — CO2 on the oxygen content of the purified iron weld metals during gas metal arc welding are showed. The effects of the welding condition and the nitrogen partial pressure in the welding atmospheres of several gas mixtures on the nitrogen content of the iron weld metals during gas tungsten arc welding and gas metal arc welding are showed. Using those results and thermodynamic data, the behavior of the oxygen and nitrogen absorptions into the iron weld metal during arc welding is discussed.
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© 1990 Chapman and Hall
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Kuwana, T. (1990). The Oxygen and Nitrogen Absorption of Iron Weld Metal during Arc Welding. In: North, T.H. (eds) Advanced Joining Technologies. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0433-0_10
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DOI: https://doi.org/10.1007/978-94-009-0433-0_10
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-6679-2
Online ISBN: 978-94-009-0433-0
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