To investigate the microstructure and damage of friction-fatigued carburized martensitic steels for reliability remanufacturing parts, retained austenite (γ) phase residual stress were characterized by X-ray diffraction (XRD) scanning electron microscopy (SEM). We evaluated their changes before after roller pitching tests, operation gear parts.

Carburizing is the main damage form of ethylene cracking furnace tubes. In this process, microstructure tube would change and element diffuses redistributes. After serving for about 41000h, radiation section a plum blossom SC-1 tubular from petrochemical company was tested analyzed in article. Results show that higher service temperature, more serious carburizing tube. inner-wall carburized zon...

INCONEL@ alloy 625 is a nickel-chromium-molybdenum alloy that is used for its high strength, excellent fabricability and weldability, and outstanding corrosion resistance. The outstanding and versatile corrosion resistance of INCONEL alloy 625 under a wide range of temperatures and corrosive environments is the primary reason for its wide acceptance in chemical processing and other applications...