Influence of growth rate on the microstructure and mechanical behaviour of a NiAl-Mo eutectic alloy

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dc.contributor.authorFERRANDINI, P.
dc.contributor.authorBATISTA, W. W.
dc.contributor.authorCARAM, R.
dc.date.accessioned2022-01-12T22:05:58Z
dc.date.available2022-01-12T22:05:58Z
dc.date.issued2004-11-03
dc.description.abstractThe effect of the growth condition on the microstructure and mechanical behaviour of the NiAl-Mo eutectic alloy was investigated. Samples of the eutectic alloy were prepared using an arc furnace under argon atmosphere and then directionally solidified. The samples directionally solidified showed regular and aligned eutectic microstructure. Compression tests were performed at room temperature and 1173K. Vickers hardness was determined at several temperatures, from room temperature to 1150K. Mechanical properties of NiAl were also determined. Results showed that when the growth rate is gradually increased from 8 to 50mm/h the aligned microstructure presents higher fibre density, which leads to higher strength level at room temperature, while further increase in the growth rate causes the microstructure the loose regularity. NiAl presents a well defined mechanical behaviour transition, while the NiAl-Mo eutectic alloy softens almost linearly. The highest yield strength value of NiAl-Mo was found to be about 1200 and 300MPa at room temperature and 1173K, respectively. © 2004 Elsevier B.V. All rights reserved.
dc.description.firstpage91
dc.description.issuenumber1-2
dc.description.lastpage98
dc.description.volume381
dc.identifier.citationFERRANDINI, P.; BATISTA, W. W.; CARAM, R. Influence of growth rate on the microstructure and mechanical behaviour of a NiAl-Mo eutectic alloy. Journal of Alloys and Compounds, v. 381, n. 1-2, p. 91-98, November, 2004.
dc.identifier.doi10.1016/j.jallcom.2004.02.052
dc.identifier.issn0925-8388
dc.identifier.urihttps://repositorio.fei.edu.br/handle/FEI/4376
dc.relation.ispartofJournal of Alloys and Compounds
dc.rightsAcesso Restrito
dc.subject.otherlanguageCrystal growth
dc.subject.otherlanguageHigh temperature alloys
dc.subject.otherlanguageIntermetallics
dc.subject.otherlanguageScanning electron microscopy
dc.titleInfluence of growth rate on the microstructure and mechanical behaviour of a NiAl-Mo eutectic alloy
dc.typeArtigo
fei.scopus.citations33
fei.scopus.eid2-s2.0-4944229075
fei.scopus.subjectEutectic alloys
fei.scopus.subjectEutectic reaction
fei.scopus.subjectRoom temperature
fei.scopus.subjectThermodynamic equilibria
fei.scopus.updated2024-05-01
fei.scopus.urlhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=4944229075&origin=inward
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