Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 527, Issue 6, Pages 1444-1447Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2009.10.029
Keywords
Bulk metallic glass; Differential scanning calorimetry (DSC); Thermal stability; Hardness; Free volume
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Funding
- International S&T Cooperation Program (ISCP) of the Chinese Ministry of Science & Technology (MOST) [2008DFA50340]
- Deutsche Forschungsgemeinschaft (DFG) [HA1344/24-1]
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We studied the effects of Fe addition on the thermal stability and hardness of (Zr46Cu39.2Ag7.8Al7)(100-y) Fe-y (y = 0-7) bulk metallic glasses (BMGs). Both the supercooled liquid region (Delta T-x) width and crystallization temperature of the (Zr46Cu39.2Ag7.8Al7)10()(100-y)Fe-y BMGs increase with Fe addition; and the largest Delta T-x of 114 K is achieved at y = 4. The average free volume decreases with increasing Fe content. The hardness increases with increasing Fe content, which may result from the decrease in free volume and the precipitation of nanocrystalline phases from glassy matrix due to Fe addition. (C) 2009 Elsevier B.V. All rights reserved.
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