Abstract
The explosive welding process is one of the most useful and widely employed applications of the high energy rate methods to the fabrication of materials. Its major advantage lies in that it does not suffer from the limitations imposed on other welding processes by their specific characteristics. For example, in fusion welding melting of the two metals to be welded is essential at the interface, and in pressure welding large plastic deformation is required. Both processes are therefore limited to metals which have comparable melting points and plastic flow stresses respectively. Practical problems are also encountered in the case of metals and alloys with high melting points (e.g. tungsten) or with high mechanical strengths. Neither melting nor excessive plastic flow are essential for explosive welding to succeed though they may be observed under certain conditions, and hence no serious limitation is imposed by large differences in the corresponding metal properties. The use of explosives imposes nevertheless a limitation from the view point of safety regulations (see Chapter 5).
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