Kaithwas, C K and Bhuyan, P and Pradhan, S K and Mandal, S (2020) Hall-Petch’ type of relationship between the extent of intergranular corrosion and grain size in a Ni-based superalloy. Corrosion Science, 175 .
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The present work elucidates the individual implication of wide spectrum of grain size on degree of sensitization (DOS) and intergranular corrosion in alloy 600H. Experimental evidences suggest that both the sensitization and desensitization phenomena are significantly delayed in the coarse-grained specimens. This is attributable to the lower driving force available in the coarser grains for the diffusion of Cr from the grain to the boundary. Interestingly, a Hall-Petch type relation has been observed between DOS (as well as weight loss) and grain size in which both the DOS and weight loss varied inversely proportional to the (grain size)1/4.
|Uncontrolled Keywords:||A. Superalloys; B. SEMB. Polarization ;B. Weight loss; C. Intergranular corrosion|
|Divisions:||Material Science and Technology|
|Deposited By:||Sahu A K|
|Deposited On:||16 Dec 2020 11:56|
|Last Modified:||16 Dec 2020 11:56|
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