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Article: Effects of boron doping on the grain-growth kinetics and mechanical properties of γ/γ′ nickel-aluminum alloys

TitleEffects of boron doping on the grain-growth kinetics and mechanical properties of γ/γ′ nickel-aluminum alloys
Authors
Chiu, YLNgan, AHW
Issue Date2000
Citation
Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2000, v. 31 n. 12, p. 3179-3186 How to Cite?
AbstractThe effects of 0.5 at. pct of boron doping on the microstructures and mechanical properties of γ/γ′ nickel-aluminum alloys have been investigated in the present study. A nickel-rich grain-boundary zone was observed in the boron-doped alloy after homogenization at 1100 °C and prolonged annealing at 1200 °C. Boron doping also caused remarkable improvements in toughness and tensile elongation and caused the fracture mode to change from completely intergranular to completely transgranular. The grain growth following recrystallization at 1200 °C was found to be retarded upon boron doping. A sudden increase in tensile elongation and a sudden drop in hardness were also observed upon prolonged heating during isothermal annealing at 1200 °C. The results are interpreted with reference to boron-nickel cosegregation at the grain boundaries.
Persistent Identifierhttp://hdl.handle.net/10722/156562
ISSN
1073-5623
2023 Impact Factor: 2.2
2023 SCImago Journal Rankings: 0.761
ISI Accession Number ID
WOS:000168037800020
References
References in Scopus

 

DC FieldValueLanguage
dc.contributor.authorChiu, YLen_US
dc.contributor.authorNgan, AHWen_US
dc.date.accessioned2012-08-08T08:42:59Z-
dc.date.available2012-08-08T08:42:59Z-
dc.date.issued2000en_US
dc.identifier.citationMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 2000, v. 31 n. 12, p. 3179-3186en_US
dc.identifier.issn1073-5623en_US
dc.identifier.urihttp://hdl.handle.net/10722/156562-
dc.description.abstractThe effects of 0.5 at. pct of boron doping on the microstructures and mechanical properties of γ/γ′ nickel-aluminum alloys have been investigated in the present study. A nickel-rich grain-boundary zone was observed in the boron-doped alloy after homogenization at 1100 °C and prolonged annealing at 1200 °C. Boron doping also caused remarkable improvements in toughness and tensile elongation and caused the fracture mode to change from completely intergranular to completely transgranular. The grain growth following recrystallization at 1200 °C was found to be retarded upon boron doping. A sudden increase in tensile elongation and a sudden drop in hardness were also observed upon prolonged heating during isothermal annealing at 1200 °C. The results are interpreted with reference to boron-nickel cosegregation at the grain boundaries.en_US
dc.languageengen_US
dc.relation.ispartofMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Scienceen_US
dc.titleEffects of boron doping on the grain-growth kinetics and mechanical properties of γ/γ′ nickel-aluminum alloysen_US
dc.typeArticleen_US
dc.identifier.emailNgan, AHW: hwngan@hkucc.hku.hken_US
dc.identifier.authorityNgan, AHW=rp00225en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-0034485268en_US
dc.identifier.hkuros58759-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0034485268&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume31en_US
dc.identifier.issue12en_US
dc.identifier.spage3179en_US
dc.identifier.epage3186en_US
dc.identifier.isiWOS:000168037800020-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridChiu, YL=7202775086en_US
dc.identifier.scopusauthoridNgan, AHW=7006827202en_US
dc.identifier.issnl1073-5623-

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