Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.jallcom.2009.05.019
Title: Calculation of crystallization start line for Zr48Cu45Al7 bulk metallic glass at a high heating and cooling rate
Authors: Xia, C.
Xing, L.
Long, W.-Y.
Li, Z.-Y.
Li, Y. 
Keywords: Bulk metallic glass
Crystallization start line
Finite-element analysis
Laser
Issue Date: 18-Sep-2009
Citation: Xia, C., Xing, L., Long, W.-Y., Li, Z.-Y., Li, Y. (2009-09-18). Calculation of crystallization start line for Zr48Cu45Al7 bulk metallic glass at a high heating and cooling rate. Journal of Alloys and Compounds 484 (1-2) : 698-701. ScholarBank@NUS Repository. https://doi.org/10.1016/j.jallcom.2009.05.019
Abstract: An effective method of obtaining the crystallization start (CS) line for bulk metallic glass (BMG) at a high heating and cooling rate, by which the required welding parameters can be estimated intuitively, has been studied. A fixed laser spot heat source, which can heat and cool BMG at a high rate, was used to re-melt Zr48Cu45Al7 BMG. The analysis of crystallization characteristics in the heat-affected zone (HAZ) indicated that at the boundary between the HAZ and the parent alloy there exist a critical state between crystalline and amorphous. The CS line should be tangent with the thermal cycle at the boundary, and the tangential point is most likely to be the transition location of the heating and cooling section in the thermal cycle. Based on simulated thermal cycles at the boundaries with different re-melting conditions by the finite-element method, the CS line for Zr48Cu45Al7 BMG at a high heating and cooling rate was constructed. Crown Copyright © 2009.
Source Title: Journal of Alloys and Compounds
URI: http://scholarbank.nus.edu.sg/handle/10635/86204
ISSN: 09258388
DOI: 10.1016/j.jallcom.2009.05.019
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