TEM study of the martensitic phases in the ductile DyCu and YCu intermetallic compounds

dc.contributor.author Cao, G.
dc.contributor.author Oertel, C.-G.
dc.contributor.author Schaarschuch, R.
dc.contributor.author Russell, Alan
dc.contributor.author Skrotzki, W.
dc.contributor.author Russell, Alan
dc.contributor.department Ames Laboratory
dc.contributor.department Materials Science and Engineering
dc.date 2018-06-26T15:24:08.000
dc.date.accessioned 2020-06-30T06:08:03Z
dc.date.available 2020-06-30T06:08:03Z
dc.date.copyright Sun Jan 01 00:00:00 UTC 2017
dc.date.issued 2017-06-15
dc.description.abstract <p>DyCu and YCu are representatives of the family of CsCI-type B2 rare earth intermetallic compounds that exhibit high room temperature ductility. Structure, orientation relationship, and morphology of the martensites in the equiatomic compounds DyCu and YCu are examined using transmission electron microscopy (TEM). TEM studies show that the martensite structures in DyCu and YCu alloys are virtually identical. The martensite is of orthorhombic CrB-type B33 structure with lattice parameters a = 0.38 nm, b = 1.22 nm, and c = 0.40 nm. (02 (1) over bar) twins were observed in the B33 DyCu and YCu martensites. The orientation relationship of B33 and B2 phases is (11 (1) over bar)[112]B33 parallel to (110)[001]B2. The simulated electron diffraction patterns of the B33 phase are consistent with those of experimental observations. TEM investigations also reveal that a dominant orthorhombic FeB-type B27 martensite with lattice parameters a = 0.71 nm, b = 0.45 nm, and c = 0.54 nm exists in YCu alloy. (I (1) over barI) twins were observed in the B27 YCu martensite. The formation mechanism of B2 to B33 and B2 to B27 phase transformation is discussed.</p>
dc.description.comments <p>This is a manuscript of an article published as Cao, G. H., C-G. Oertel, R. Schaarschuch, W. Skrotzki, and A. M. Russell. "TEM study of the martensitic phases in the ductile DyCu and YCu intermetallic compounds." <em>Acta Materialia</em> 132 (2017): 345-353. DOI: <a href="http://dx.doi.org/10.1016/j.actamat.2017.05.005" target="_blank">10.1016/j.actamat.2017.05.005</a>, Posted with permission.</p>
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dc.identifier archive/lib.dr.iastate.edu/mse_pubs/295/
dc.identifier.articleid 1297
dc.identifier.contextkey 12360995
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath mse_pubs/295
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/55634
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/mse_pubs/295/2017_Russell_TEMStudy.pdf|||Fri Jan 14 23:15:09 UTC 2022
dc.source.uri 10.1016/j.actamat.2017.05.005
dc.subject.disciplines Materials Science and Engineering
dc.subject.disciplines Mechanics of Materials
dc.subject.disciplines Metallurgy
dc.subject.keywords Intermetallic compounds
dc.subject.keywords Phase transformation
dc.subject.keywords Microstructure
dc.subject.keywords Transmission electron microscopy (TEM)
dc.title TEM study of the martensitic phases in the ductile DyCu and YCu intermetallic compounds
dc.type article
dc.type.genre article
dspace.entity.type Publication
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