Concept explainers
When welds fail, it is not uncommon for the failure to occur in the material adjacent to the weld. Inexperienced welders have been known to comment that the weld was obviously good and the problem is the poor quality material that was being welded. With your knowledge of the fusion welding processes and the heat-affected zone (HAZ) that is produced adjacent to the weld pool, comment on the weld-related problems that could occur if the welding was being performed on:
- Heat-treated medium carbon alloy steel
- Age-hardened (aerospace grade) aluminum
- Thin pieces of high-carbon steel
- Plates of electrical grade copper
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