Localized Creep Property Estimated in the Welded Part of High-Cr Steel by an Indentation Test

In this paper, the creep parameter involved in the constitutive equations for Norton’s law is identified for the base metal, heat affected zone (HAZ) and weld metal in the weldment of a high-Cr ferritic heat-resisting steel, which is a candidate material for the steam generating tube of the supercritical boiler, by conducting a high temperature indentation creep test. Important engineering problems, such as the welded plate and the tube subjected to a creep loading are analyzed using the estimated creep parameter by the finite element analysis.