Please use this identifier to cite or link to this item: https://doi.org/10.1007/s11433-011-4434-6
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dc.titleCorrelation between supercooled liquid region and crystallization behavior with alloy composition of La-Al-Cu metallic glasses
dc.contributor.authorZhang, Q.C.
dc.contributor.authorPang, S.J.
dc.contributor.authorLi, Y.
dc.contributor.authorZhang, T.
dc.date.accessioned2014-10-07T09:48:22Z
dc.date.available2014-10-07T09:48:22Z
dc.date.issued2011-09
dc.identifier.citationZhang, Q.C., Pang, S.J., Li, Y., Zhang, T. (2011-09). Correlation between supercooled liquid region and crystallization behavior with alloy composition of La-Al-Cu metallic glasses. Science China: Physics, Mechanics and Astronomy 54 (9) : 1608-1611. ScholarBank@NUS Repository. https://doi.org/10.1007/s11433-011-4434-6
dc.identifier.issn16747348
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/86239
dc.description.abstractBulk metallic glasses (BMGs) with large supercooled liquid region are promising materials for superplastic forming. In this paper, we demonstrate a microstructure-based strategy to pinpoint the composition with the largest supercooled liquid region in La86-xAl14Cux (x=16 at%-20 at%) metallic glass system. By monitoring the changes in crystallization behavior of the glassy alloys with composition to search for the alloys exhibiting eutectic crystallization, the glassy alloys with the largest supercooled liquid region in the given alloy system can be found. The metallic glasses with Cu contents of 16 at%-19 at% exhibited two crystallization peaks, and the primary crystallization product was identified to be a-La by means of DSC, XRD and TEM. The increase in Cu content resulted in the decay of the primary crystallization peak and the increase in onset temperature of crystallization, leading to the enlargement of supercooled liquid region. By further suppressing the a-La primary crystallization with increasing Cu content up to 20 at%, the eutectic crystallization of a-La and LaCu 13 through one crystallization reaction occurred upon heating, where the largest supercooled liquid region of 65 K for La 66Al 14Cu 20 glassy alloy was located. This study indicats that, in a given glassy alloy system, a larger supercooled liquid region can be achieved by optimizing the alloy compositions to suppress the primary crystallization. © Science China Press and Springer-Verlag Berlin Heidelberg 2011.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1007/s11433-011-4434-6
dc.sourceScopus
dc.subjectBulk metallic glass
dc.subjectCrystallization
dc.subjectSupercooled liquid region
dc.typeArticle
dc.contributor.departmentMATERIALS SCIENCE AND ENGINEERING
dc.description.doi10.1007/s11433-011-4434-6
dc.description.sourcetitleScience China: Physics, Mechanics and Astronomy
dc.description.volume54
dc.description.issue9
dc.description.page1608-1611
dc.identifier.isiut000293797100009
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