Failure investigation of secondary super-heater tubes in a power boiler

The dynamic creep rupture of a secondary superheater tube in a 43MW coal-fired boiler by the decarburization and multilayer oxide scale buildup on both sides

“…The classic methodology applied the Larson-Miller Parameter (LMP) to analysis the tube life [5][6][7][8]. In recent studies, researches focused on the aspects of metallurgical and oxide scales [9][10][11][12][13][14][15][16][17][18][19][20][21].…”

Failure Analysis of AISI-304 Stainless Steel Styrene Storage Tank

“…The area adjacent to the grain boundaries is then depleted of chromium and thus that region looses its corrosion resistance and leads to intergranular corrosion. Such localized corrosion along the grain boundaries may result in intergranular SCC in the presence of tensile stresses [18][19][20]. But in this case, the mode of fracture was not intergranular; rather it was transgranular which is attributed to chloride SCC [13,21] thus the sensitization was not a primary contributor to the failure process.…”

Hot tensile properties and constant load stress corrosion cracking test data of autogenous weld joints of super 304HCu stainless steel in boiling MgCl2 solution

“…Fusion welding alters the phase composition, and microstructure of the steel and such alteration can affect the mechanical and corrosion characteristics in contrast to the parent material. Chloride stress corrosion cracking (SCC) is the most likely life limiting failure in austenitic stainless steel tubing of USC boilers and welding can even worsen the SCC susceptibility of the material [5] . The SCC experiments are conducted on autogenous GTA welded Super 304HCu joint in 45% boiling MgCl 2 solution using constant load SCC and their respective corrosion elongation curves are presented.…”