Is ductility required for welding a metal

Practical knowledge of welding technology pp 202-251 | Cite as


In fusion welding, the material at the welding point is heated above its melting point by the action of the heat source and melted in the process. The temperature decreases exponentially to the neighboring base material on both sides of the seam. The temperature gradient as well as the maximum temperature depend on the power density, the welding speed and the physical properties of the material. Fig. 11-1 shows the temperature fields for two processes with different power densities. In electron beam welding, for example, characterized by a high power density, one finds a high temperature gradient, i. H. a steep drop in temperature from the maximum value - represented by the closely spaced isotherms of the temperature field. In contrast to this, the temperature curve in gas fusion welding with its comparatively low power density is much flatter.

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further reading

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