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In life assessment methodologies, which involve analyzing cracks and discontinuities, there is a need to assess the significance of the defects which may exist in high temperature equipment operating in the creep and creep/fatigue range. Creep and creep/fatigue crack growth models as well as...
A Code of Practice is prepared based on the comprehensive work within internal, national and international projects. The guidelines are established for specimen selection to be followed in experimental studies. The Code of Practice is prepared based on the authors' and project partners' long...
The removal of grain boundaries normal to the principal loading direction with the introduction of directionally solidified (DS) grains has significantly improved creep strength, resistance to thermal fatigue, crack growth and oxidation. In this study, a model is developed for representing and...
The combined effects of temperature and frequency on the crack growth rate and failure life were investigated using the compact tension specimens of 12Cr steel under creep and creep-fatigue conditions. The creep-fatigue tests were performed by introducing the hold time at the maximum load. At...
Type IV cracking in heat affected zone (HAZ) of weldment is a problem for advanced high Cr ferritic heat resisting steels. It is important to predict initiation and growth of creep voids and cracks in weldment. Present paper conducted the creep crack growth tests for the welded joint and base...
Low-cycle fatigue properties for three heats of normalized and tempered 2.25Cr-1Mo steel were investigated under uniaxial strain control at high temperatures. Comparing with the reference data for normalized and tempered, and annealed 2.25Cr-1Mo steels under uniaxial or diametrical strain...
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