Effects of Post-Weld Heat Treatment on Optimum Cathodic Protection Potential of High-Strength Steel in Marine Environment Conditions

Abstract

The electrochemical and mechanical properties of welded high-strength steel were investigated using the slow strain rate test method with a constant applied cathodic potential. No correlations were found with the maximum tensile strength, yield strength, stress at failure, or hydrogen embrittlement. However, the elongation, time-to-fracture, and strain-to-failure ratio decreased as the potential became more negative. These parameters were greatest when the potential was -770mV, regardless of the post-weld heat treatment conditions. The elongation and time-to-fracture increased with PWHT.

Galvanic Cathodic Protection Evaluation of a Steel Pipe in Iraqi Soil

“…Capacity Cathodic protection anodes have specific parameters relating to their rates of consumption and utilization. These determine the useful life that can be obtained from an anode operating at or below its calculated current output [13]. Table 4.…”