| Abstrakt: |
1.Heat treatment has a great influence on the corrosion resistance of welds, those not heat treated, and those water quenched, having better properties. A short-period tempering after heat treatment considerably increases the overall rate of general corrosion. A stabilizing anneal lowers the general corrosion rate, but it is useful when followed by short-period tempering in the dangerous temperature range (i. e. within which sensitization occurs).2.Welds suffer concentrated intergranular (knife-line) corrosion in the junction zone. The deepest corrosion is observed in welds reheated for two hours at 650°C (1200°F).3.In acid oxidizing solutions titanium-stabilized welds corrode more rapidly than unstabilized welds. Weld metal stabilized and not stabilized with titanium, particularly after short-period tempering, suffers intergranular corrosion at the same rate. |
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