Structural origins for the high plasticity of a Zr-Cu-Ni-Al bulk metallic glass

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dc.contributor.authorQu, DDen_AU
dc.contributor.authorLiss, KDen_AU
dc.contributor.authorSun, YJen_AU
dc.contributor.authorReid, Men_AU
dc.contributor.authorAlmer, JDen_AU
dc.contributor.authorYan, Ken_AU
dc.contributor.authorWang, Yen_AU
dc.contributor.authorLiao, XZen_AU
dc.contributor.authorShen, Jen_AU
dc.date.accessioned2013-03-14T01:53:02Zen_AU
dc.date.available2013-03-14T01:53:02Zen_AU
dc.date.issued2012-09-11en_AU
dc.date.statistics2013-03-14en_AU
dc.description.abstractThe structural origins for the high plasticity of a Zr(53)Cu(18.7)Ni(12)Al(16.3) (at.%) bulk metallic glass are explored. Under plastic flow conditions, in situ synchrotron high-energy X-ray diffraction reveals that the atomic strain saturates to the closest packing in the longitudinal direction of the applied load while atoms yield in the transverse plane. Scanning electron microscopy investigation reveals that global plasticity benefits from abundant shear band multiplication and interactions. Atomic level flows are seen to accompany profuse shear bands. The plasticity enhancement of this metallic glass benefits from such atomic level flows. Atomic level flow facilitates the activation of shear transformation zones that further self-assemble to promote shear band multiplication. On the other hand, it also mitigates the shear band propagation that prevents catastrophic shear band extension. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. © 2012, Elsevier Ltd.en_AU
dc.identifier.citationQu, D.D., Liss, K.D, Sun, Y.J., Reid, M., Almer, J.D., Yan, K., Wang, Y.B., Liao, X.Z., Shen, J. (2012). Structural origins for the high plasticity of a Zr–Cu–Ni–Al bulk metallic glass. Acta Materialia, 61(1), 321-330. doi:10.1016/j.actamat.2012.09.062en_AU
dc.identifier.govdoc4896en_AU
dc.identifier.issn1359-6454en_AU
dc.identifier.issue1en_AU
dc.identifier.journaltitleActa Materialiaen_AU
dc.identifier.pagination321-330en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.actamat.2012.09.062en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4522en_AU
dc.identifier.volume61en_AU
dc.language.isoenen_AU
dc.publisherPergamon-Elsevier Science Ltden_AU
dc.subjectDeformationen_AU
dc.subjectAnisotropyen_AU
dc.subjectAlloysen_AU
dc.subjectPlasticityen_AU
dc.subjectX-ray diffractionen_AU
dc.titleStructural origins for the high plasticity of a Zr-Cu-Ni-Al bulk metallic glassen_AU
dc.typeJournal Articleen_AU
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