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Effect of Mo on the thermal stability of gamma ' precipitate in Inconel 740 alloy

Title
Effect of Mo on the thermal stability of gamma ' precipitate in Inconel 740 alloy
Author
김선진
Keywords
Nickel based superalloys; Coarsening
Issue Date
2014-09
Publisher
International Metallographic Society.
Citation
Materials characterization, v.95[2014년], pp. 180-186
Abstract
The effect of Mo on gamma prime (γ') coarsening kinetics of Ni-25Cr-20Co-1.8Ti-0.9Al-2Nb-0.03C-xMo (x=0.5, 3, 6wt.%) alloys was investigated with respect to the activation energy for γ' precipitate coarsening. The coarsening rates were measured at temperatures of 760 o C, 780 o C, and 810 o C up to 500h. Coarsening rate decreased with increasing Mo, and the activation energies for coarsening were determined to be 245kJ/mol, 261kJ/mol, and 278kJ/mol for 0.5wt.% Mo, 3wt.% Mo, and 6wt.% Mo, respectively.
URI
http://www.sciencedirect.com/science/article/pii/S104458031400196X?via%3Dihubhttp://hdl.handle.net/20.500.11754/52313
ISSN
1044-5803
DOI
10.1016/j.matchar.2014.06.019
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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