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Indexed by:期刊论文

Date of Publication:2010-06-01

Journal:INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS

Included Journals:SCIE、EI

Volume:17

Issue:3

Page Number:323-326

ISSN No.:1674-4799

Key Words:bulk metallic glasses (BMG); cluster; atomic cluster; corrosion; glass-forming ability

Abstract:Bulk metallic glass (BMG) formation was explored in the Fe-B-Si-Nb alloy system though combined use of the atomic cluster line approach and the minor alloying strategy. The basic ternary compositions in the Fe-B-Si system were determined by the intersection points of two cluster lines, namely, Fe-B cluster to Si and Fe-Si cluster to B. 3at%-4at% Nb was added to the quaternary Fe-B-Si-Nb alloy. The casting experiments revealed that good glass-forming ability (GFA) occurred at the (Fe73.4Si8.2B18.4)(96)Nb-4 composition, and 3-mm diameter BMG samples were made. The glass transition temperature (T-g), crystallization temperature (T-x), and supercooled liquid region (Delta T-x=T-x-T-g) of this BMG were measured to be 866, 889, and 23 K, respectively. The BMG shows a high Vickers hardness of about Hv 1164, a Young's modulus of 180 GPa, and a good corrosion resistance in the solutions of 1 mol/L HCl and 3wt% NaCl.