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http://dx.doi.org/10.5228/KSPP.2007.16.4.309

High Temperature Deformation Behavior and Estimation for Formability of Zr55Cu30Al10Ni5 Bulk Metallic Glass  

Jun, H.J. (포항공과대학교 신소재공학과)
Lee, K.S. (포항공과대학교 항공재료센터)
Chang, Y.W. (포항공과대학교 신소재공학과)
Publication Information
Transactions of Materials Processing / v.16, no.4, 2007 , pp. 309-312 More about this Journal
Abstract
Deformation behavior of $Zr_{55}Cu_{30}Al_{10}Ni_5$(at. %) bulk metallic glass(BMG) fabricated by suction casting method has been investigated at elevated temperatures in this study. The BMG was first verified to have an amorphous structure with the analysis of X-ray diffraction(XRD) and differential scanning calorimetry(DSC) data. A series of compression tests has consequently been performed in the region of supercooled liquid temperature to investigate the behavior of high temperature deformation. A transition from Newtonian to non-Newtonian flow appeared to take place depending upon both the strain rate and test temperature. A processing map based on a dynamic materials model has been constructed to estimate a feasible forming condition for this BMG alloy.
Keywords
Metallic Glass; High Temperature Deformation; Mechanical Properties; Processing Map;
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Times Cited By KSCI : 1  (Citation Analysis)
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