File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Effects of Boron Addition on Grain Refinement in TiAl-based Alloys

TitleEffects of Boron Addition on Grain Refinement in TiAl-based Alloys
Authors
KeywordsPhase transformation
Titanium aluminides
Microstructure
Issue Date2010
Citation
Journal of Materials Science and Technology, 2010, v. 26, n. 7, p. 639-647 How to Cite?
AbstractSolid state phase transformation characteristics of the body centred β(Ti) into the hexagonal closed packed α(Ti) in Ti45Al8Nb-(0, 0.3, 0.5 and 0.8 at. pct) B alloys were investigated by heat treatment to clarify γ/α2 lamellar microstructure refinement induced by B addition. Experimental results confirmed two kinds of boron-reduced grain refinement mechanisms through refining either β phase then α phase (β-refinement) or α phase directly (α-refinement) to refine lamellar microstructure at room temperature; however, the role of α-refinement dominated the as-cast lamellar microstructure refinement over β-refinement in Ti45Al8NbxB alloy. It was also found that during the α-refinement the convoluted flake- and plate-like borides along β grain boundaries assisted nucleation of α phase, and the particle-like borides near β grain boundaries impeded α phase growth. © 2010 The Chinese Society for Metals.
Persistent Identifierhttp://hdl.handle.net/10722/265586
ISSN
2023 Impact Factor: 11.2
2023 SCImago Journal Rankings: 2.309
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorWang, W. D.-
dc.contributor.authorMa, Y. C.-
dc.contributor.authorChen, B.-
dc.contributor.authorGao, M.-
dc.contributor.authorLiu, K.-
dc.contributor.authorLi, Y. Y.-
dc.date.accessioned2018-12-03T01:21:06Z-
dc.date.available2018-12-03T01:21:06Z-
dc.date.issued2010-
dc.identifier.citationJournal of Materials Science and Technology, 2010, v. 26, n. 7, p. 639-647-
dc.identifier.issn1005-0302-
dc.identifier.urihttp://hdl.handle.net/10722/265586-
dc.description.abstractSolid state phase transformation characteristics of the body centred β(Ti) into the hexagonal closed packed α(Ti) in Ti45Al8Nb-(0, 0.3, 0.5 and 0.8 at. pct) B alloys were investigated by heat treatment to clarify γ/α2 lamellar microstructure refinement induced by B addition. Experimental results confirmed two kinds of boron-reduced grain refinement mechanisms through refining either β phase then α phase (β-refinement) or α phase directly (α-refinement) to refine lamellar microstructure at room temperature; however, the role of α-refinement dominated the as-cast lamellar microstructure refinement over β-refinement in Ti45Al8NbxB alloy. It was also found that during the α-refinement the convoluted flake- and plate-like borides along β grain boundaries assisted nucleation of α phase, and the particle-like borides near β grain boundaries impeded α phase growth. © 2010 The Chinese Society for Metals.-
dc.languageeng-
dc.relation.ispartofJournal of Materials Science and Technology-
dc.subjectPhase transformation-
dc.subjectTitanium aluminides-
dc.subjectMicrostructure-
dc.titleEffects of Boron Addition on Grain Refinement in TiAl-based Alloys-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S1005-0302(10)60099-0-
dc.identifier.scopuseid_2-s2.0-77955821291-
dc.identifier.volume26-
dc.identifier.issue7-
dc.identifier.spage639-
dc.identifier.epage647-
dc.identifier.isiWOS:000281056000012-
dc.identifier.issnl1005-0302-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats