Formation and corrosion properties of Fe-based bulk metallic glasses

• Published in: International journal of minerals, metallurgy and materials metallurgy and materials, 2010-06, Vol.17 (3), p.323-326
• Main Authors: Zhu, Chun-lei, Wang, Qing, Zhang, Jie, Wang, Ying-min, Dong, Chuang
• Format: Article
• Language: English
• Subjects: Alloy systems; Alloying; Amorphous materials; Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Clusters; Composites; Composition; Corrosion; Corrosion and Coatings; Corrosion resistance; Crystallization; Diameters; Diamond pyramid hardness; Ferrous alloys; Glass; Glass transition temperature; Iron; Materials Science; Metallic glasses; Metallic Materials; Metallurgy; Modulus of elasticity; Natural Materials; Niobium base alloys; Quaternary alloys; Sodium chloride; Surfaces and Interfaces; Thin Films; Transition temperatures; Tribology; 原子团簇; 合金系统; 大块金属玻璃; 德克萨斯州; 玻璃化转变温度; 玻璃形成能力; 腐蚀特性
• ISSN: 1674-4799; 1869-103X
• DOI: 10.1007/s12613-010-0312-x

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）96Nb4 composition, and 3-mm diameter BMG samples were made. The glass transition temperature （Tg）, crystallization temperature （Tx）, and supercooled liquid region （△Tx=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.