Previous research showed that the threshold stress for stress corrosion cracking (SCC) of X52 steel under steady loading could be controlled at a high level (near the yield strength) if the steel were strained between 4 and 7 percent and then aged at 300F for about 1 hour. In an attempt to evaluate the feasibility of using such straining as a practical approach to preventing sec, an experimental program was conducted to evaluate the effect of such straining and aging on the threshold stress of a variety of grades of line-pipe steels subjected to the more realistic condition of cyclic stress superimposed...
Previous research showed that the threshold stress for stress corrosion cracking (SCC) of X52 steel under steady loading could be controlled at a high level (near the yield strength) if the steel were strained between 4 and 7 percent and then aged at 300F for about 1 hour. In an attempt to evaluate the feasibility of using such straining as a practical approach to preventing sec, an experimental program was conducted to evaluate the effect of such straining and aging on the threshold stress of a variety of grades of line-pipe steels subjected to the more realistic condition of cyclic stress superimposed on steady mean stress.