Preferential coarsening of {gamma}{double_prime} precipitates in INCONEL 718 during creep

Journal Article · Thu Oct 31 23:00:00 EST 1996 · Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science

DOI:https://doi.org/10.1007/BF02595432· OSTI ID:413275

Gao, M; Chen, S; Harlow, D G; Wei, R P ^[1]

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1. Lehigh Univ., Bethlehem, PA (United States). Dept. of Mechanical Engineering and Mechanics

Preferential coarsening of the {gamma}{double_prime} (Ni{sub 3}Nb) precipitates was observed in polycrystalline INCONEL 718 during creep which involved principally the growth of one of three variants at the expense of the others. The tendency and extent of preferential coarsening are analyzed in terms of the interaction between the applied stress and the transformation strains and probabilistically in terms of the orientation of the {gamma}{double_prime} precipitates with respect to the tensile stress axis.

• Sponsoring Organization: National Science Foundation, Washington, DC (United States)
• OSTI ID: 413275
• Journal Information: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 11 Vol. 27; ISSN 1073-5623; ISSN MMTAEB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHEMICAL COMPOSITION
CREEP
INCONEL 718
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
PARTICLE SIZE
PARTICULATES
PROBABILITY
SCANNING ELECTRON MICROSCOPY
STRAINS
STRESSES
TRANSMISSION ELECTRON MICROSCOPY