METHOD FOR IMPROVING STRESS CORROSION CRACKING RESISTANCE IN SUPERALLOY

摘要

PROBLEM TO BE SOLVED: To improve resistance to stress corrosion cracking (SCC) in metal parts including turbine and generator components.SOLUTION: A treatment for improving resistance to stress corrosion cracking (SCC) and a treated component are disclosed. A surface of a relatively high tensile strength component that includes a superalloy material is heated to a temperature at which softening occurs. The surface is then cooled in a controlled manner so as to maintain a reduced tensile strength at the surface that improves resistance to SCC while keeping a relatively high tensile strength in the remainder of the component.