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dc.contributor.authorLiao, Jian-Hongen_US
dc.contributor.authorBor, Hui-Yunen_US
dc.contributor.authorChao, Chuen-Guangen_US
dc.contributor.authorLiu, Tzeng-Fengen_US
dc.date.accessioned2014-12-08T15:07:04Z-
dc.date.available2014-12-08T15:07:04Z-
dc.date.issued2010-04-01en_US
dc.identifier.issn1345-9678en_US
dc.identifier.urihttp://dx.doi.org/10.2320/matertrans.M2009331en_US
dc.identifier.urihttp://hdl.handle.net/11536/5552-
dc.description.abstractThe effects of Re additions on the microstructure and phase stability of the cast fine-grain Mar-M247 superalloy were investigated in this study. The results showed that the grain sizes of the alloys with 0, 3, and 4.5 mass% Re content were 90, 60, and 50 mu m, respectively. The primary gamma' phase became finer and more cuboidal as Re content increased. The addition of 3 mass% Re caused strip-like MC carbides within the grain to degenerate into discontinuous M(23)C(6) carbides and initiated the formation of a deleterious topological closed-packed (TCP) phase within the grain interior. The addition of 4.5 mass% Re promoted phase instabilities that led to the precipitation of large amounts of needle-like P phase in the grain interior, attributable to Re and W segregation. This study found that 3 mass% Re was a critical addition to maintain optimal microstructure and phase stability, and improved the ultimate tensile strength and the yield strength at room temperature and 760 degrees C. However, the addition of 4.5 mass% Re obviously resulted in a decrease in tensile properties at room temperature and 760 degrees C. [doi:10.2320/matertrans.M2009331]en_US
dc.language.isoen_USen_US
dc.subjectsuperalloyen_US
dc.subjectrheniumen_US
dc.subjectfine-grainen_US
dc.subjectcastingen_US
dc.titleEffects of Rhenium on Microstructure and Phase Stability of MAR-M247 Ni-Base Fine-Grain Superalloyen_US
dc.typeArticleen_US
dc.identifier.doi10.2320/matertrans.M2009331en_US
dc.identifier.journalMATERIALS TRANSACTIONSen_US
dc.citation.volume51en_US
dc.citation.issue4en_US
dc.citation.spage810en_US
dc.citation.epage817en_US
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.identifier.wosnumberWOS:000278263100035-
dc.citation.woscount2-
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