Formation and corrosion properties of Fe-based bulk metallic glasses

Formation and corrosion properties of Fe-based bulk metallic glasses
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铁基大块金属玻璃的形成及腐蚀特性

DOI:
10.1007/s12613-010-0312-x
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发表时间:
2010-06
影响因子:
4.8
通讯作者:
Wang, Qing
Wang, Qing
中科院分区:
材料科学2区
文献类型:
--
作者:
Wang, Ying-min;Zhu, Chun-lei;Dong, Chuang;Zhang, Jie;Wang, Qing

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结合原子团簇线方法和微量合金化策略,研究了Fe-B-Si-Nb合金系大块非晶的形成。Fe-B-Si三元系的基本组成由两条团簇线的交点确定,即Fe-B团簇与Si的交点和Fe-Si团簇与B的交点。在Fe-B-Si-Nb四元合金中加入3at%~ 4at%的Nb。铸造实验表明,(Fe 73.4Si 8.2B 18.4)96 Nb 4合金具有良好的非晶形成能力(GFA),并制备出直径为3 mm的BMG试样。测得该BMG的玻璃化转变温度(Tg)、结晶温度(Tx)和过冷液相区(ΔTx= Tx-Tg)分别为866、889和23 K。结果表明,BMG具有较高的维氏硬度(Hv 1164)和弹性模量(180 GPa),在1 mol/L HCl和3wt%NaCl溶液中具有良好的耐蚀性。
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)96Nb4composition, and 3-mm diameter BMG samples were made. The glass transition temperature (Tg), crystallization temperature (Tx), and supercooled liquid region (ΔTx=Tx−Tg) 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.
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