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Article: Microstructure and mechanical properties of a spark plasma sinteredTi-45Al-8.5Nb-0.2W-0.2B-0.1Y alloy

TitleMicrostructure and mechanical properties of a spark plasma sinteredTi-45Al-8.5Nb-0.2W-0.2B-0.1Y alloy
Authors
Lu, X.He, X. B.Zhang, B.Zhang, L.Qu, X. H.Guo, Z. X.
KeywordsTitanium aluminides, based on TiAl
Microstructure
Sintering
Issue Date2009
Citation
Intermetallics, 2009, v. 17, n. 10, p. 840-846 How to Cite?
DOI: http://dx.doi.org/10.1016/j.intermet.2009.03.013
AbstractA high Nb containing TiAl alloy from pre-alloyed powder of Ti-45Al-8.5Nb-0.2B-0.2W-0.1Y was processed by spark plasma sintering (SPS). The effects of sintering temperature on the microstructure and mechanical properties were studied. The optimized conditions yield high densities and uniform microstructure. Specimens sintered at 1100 °C are characterized by fine duplex microstructure, leading to superior room temperature mechanical properties with a tensile strength of 1024 MPa and an elongation of 1.16%. Specimens sintered at 1200 °C are of fully lamellar microstructure with a tensile strength of 964 MPa and an elongation of 0.88%. The main fracture mode in the duplex microstructure was transgranular in the equiaxed γ grains and interlamellar in the lamellar colonies. For the fully lamellar structure, the fracture mode was dominated by interlamellar, translamellar and stepwise failure. © 2009 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/262930
ISSN
0966-9795
2021 Impact Factor: 4.075
2020 SCImago Journal Rankings: 1.133
ISI Accession Number ID
WOS:000267974600011

 

DC FieldValueLanguage
dc.contributor.authorLu, X.-
dc.contributor.authorHe, X. B.-
dc.contributor.authorZhang, B.-
dc.contributor.authorZhang, L.-
dc.contributor.authorQu, X. H.-
dc.contributor.authorGuo, Z. X.-
dc.date.accessioned2018-10-08T09:28:50Z-
dc.date.available2018-10-08T09:28:50Z-
dc.date.issued2009-
dc.identifier.citationIntermetallics, 2009, v. 17, n. 10, p. 840-846-
dc.identifier.issn0966-9795-
dc.identifier.urihttp://hdl.handle.net/10722/262930-
dc.description.abstractA high Nb containing TiAl alloy from pre-alloyed powder of Ti-45Al-8.5Nb-0.2B-0.2W-0.1Y was processed by spark plasma sintering (SPS). The effects of sintering temperature on the microstructure and mechanical properties were studied. The optimized conditions yield high densities and uniform microstructure. Specimens sintered at 1100 °C are characterized by fine duplex microstructure, leading to superior room temperature mechanical properties with a tensile strength of 1024 MPa and an elongation of 1.16%. Specimens sintered at 1200 °C are of fully lamellar microstructure with a tensile strength of 964 MPa and an elongation of 0.88%. The main fracture mode in the duplex microstructure was transgranular in the equiaxed γ grains and interlamellar in the lamellar colonies. For the fully lamellar structure, the fracture mode was dominated by interlamellar, translamellar and stepwise failure. © 2009 Elsevier Ltd. All rights reserved.-
dc.languageeng-
dc.relation.ispartofIntermetallics-
dc.subjectTitanium aluminides, based on TiAl-
dc.subjectMicrostructure-
dc.subjectSintering-
dc.titleMicrostructure and mechanical properties of a spark plasma sinteredTi-45Al-8.5Nb-0.2W-0.2B-0.1Y alloy-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.intermet.2009.03.013-
dc.identifier.scopuseid_2-s2.0-67349234565-
dc.identifier.volume17-
dc.identifier.issue10-
dc.identifier.spage840-
dc.identifier.epage846-
dc.identifier.isiWOS:000267974600011-
dc.identifier.issnl0966-9795-

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