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The evaluation of the creep properties of 2.25Cr-1Mo steel base metal, weld metal and weld joint at 773, 823 and 873K over a stress range 80-300MPa was carried out. The weld joint exhibited significantly higher creep rate and lower rupture life and ductility than the base metal and weld metal. Creep tests were performed on the simulated heat affected zone (HAZ) structures of the weld joint (viz. coarse-grain...
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