Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.actamat.2005.02.020
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dc.titleMicrostructure control and ductility improvement of La-Al-(Cu, Ni) composites by Bridgman solidification
dc.contributor.authorZhang, Y.
dc.contributor.authorXu, W.
dc.contributor.authorTan, H.
dc.contributor.authorLi, Y.
dc.date.accessioned2014-12-02T06:53:01Z
dc.date.available2014-12-02T06:53:01Z
dc.date.issued2005-05
dc.identifier.citationZhang, Y., Xu, W., Tan, H., Li, Y. (2005-05). Microstructure control and ductility improvement of La-Al-(Cu, Ni) composites by Bridgman solidification. Acta Materialia 53 (9) : 2607-2616. ScholarBank@NUS Repository. https://doi.org/10.1016/j.actamat.2005.02.020
dc.identifier.issn13596454
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/114356
dc.description.abstractMicrostructure evolutions were experimentally studied as a function of growth velocity and alloy composition in LaxAl14(Cu, Ni)86 - x alloys (x = 57-74). The composition-velocity ranges were determined for the formation of eutectic, amorphous, eutectic + compound, amorphous + dendrite, and eutectic + dendrite. A skewed eutectic coupled zone was found towards the compound phase. A composite structure composed of ductile La dendrites in a matrix of either eutectic or amorphous phase can be produced in hypoeutectic alloys. Compressive tests were performed on amorphous/dendrite and eutectic/dendrite composites. As the volume fraction of dendrites increases, fracture strength linearly decreases and obeys a rule-of-mixtures relationship, whereas plastic strain exhibits an exponential increase. Optimised mechanical properties can be realized through both alloy composition design and well-controlled solidification processing. © 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.actamat.2005.02.020
dc.sourceScopus
dc.subjectBridgman solidification
dc.subjectBulk metallic glass
dc.subjectComposite
dc.subjectEutectic
dc.subjectLa based alloy
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE
dc.contributor.departmentSINGAPORE-MIT ALLIANCE
dc.description.doi10.1016/j.actamat.2005.02.020
dc.description.sourcetitleActa Materialia
dc.description.volume53
dc.description.issue9
dc.description.page2607-2616
dc.identifier.isiut000229329300007
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