Enhancement of Thermal Stability and Bending Ductility of Fe–Si–B Amorphous Ribbons with Minor Y Addition

• Published in: Metals and materials international Vol. 27; no. 10; pp. 4286 - 4293
• Main Authors: Dong, Weiwei, Wu, Xiaowei, Yan, Mi
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Institute of Metals and Materials 01-10-2021; Springer Nature B.V; 대한금속·재료학회
• Subjects: Alloying additive; Alloys; Amorphous alloys; Bending; Brittleness; Characterization and Evaluation of Materials; Chemistry and Materials Science; Coercivity; Crystallization; Ductile-brittle transition; Ductility; Engineering Thermodynamics; Heat and Mass Transfer; High temperature; Machines; Magnetic Materials; Magnetic properties; Magnetism; Manufacturing; Materials Science; Metallic glasses; Metallic Materials; Phase transitions; Processes; Solid Mechanics; Thermal stability; 재료공학; Shear bonds; Fracture surface; Bending ductility; Amorphous ribbons; Thermal stability
• ISSN: 1598-9623; 2005-4149
• DOI: 10.1007/s12540-020-00720-x

The influences of minor Y addition on the thermal stability, crystallization behavior, magnetic property and bending ductility of Fe–Si–B amorphous ribbons have been systematically investigated. The results show that all the ribbons with Y addition are fully amorphous structure, and the introduction of Y can enhance the glass forming ability of Fe–Si–B amorphous alloy. With Y addition, crystallization temperature of the first and second phase shift to high temperature side, the temperature interval between the two crystallization peaks are enlarged, the third phase transitions process of Fe–Si–B amorphous alloy with Y addition corresponds to the precipitation of Fe
3
B phase. The activation energy of the first and second phase calculated by Kissinger’s formula increased with Y addition. Appropriate Y addition is beneficial for Ms. The measured coercivity Hc gradually decreased with the Y addition increased. The amorphous alloys exhibit good bending ductility in the quenched state. The ductile to brittle temperature increase to 300 °C with 1 at% Y addition. Furthermore, the mechanism of ductile to brittle for amorphous alloy was discussed.
Graphic Abstract