... exposure at both temperatures. All three coatings showed no evidence of internal oxidation after exposure at 750 ° C . Among the three coatings, only the coating containing 4 wt % Al showed evidence of internal oxidation along the columnar grain boundaries after exposure at 1010 ° C . The Al 2 O 3 scale...

...Takashi Ogata High temperature components in thermal power plants are subjected to creep-fatigue loading where creep cavities initiate and grow on grain boundaries. Development of a quantitative evaluation method of cavity growth is important for reliable maintenance of these components...

...Andrey P. Jivkov; Nicholas P. C. Stevens; Thomas J. Marrow The resistance of polycrystalline materials to intergranular cracking can be influenced by the microstructure. In sensitized stainless steels, for example, the grain boundaries prone to sensitization form paths of low resistance...

... degrees of temper embrittlement for the steel. Charpy V-notch impact tests and Auger electron spectroscopy analysis were performed on embrittled 2.25Cr-1Mo steels to establish the relation between the shift of FATT and the change in the concentration of phosphorus segregated in the grain boundary...