Enhancement of Magnetic and Tensile Mechanical Performances in Fe-Based Metallic Microwires Induced by Trace Ni-Doping
| Autor: | Guanda Qu, Mingwei Zhang, Cao Guanyu, Mengyao Pang, Wang Xufeng, Jingshun Liu, Guoxi Ma, Rui Liu |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Technology
Materials science nanocrystalline structure Plasticity Article magnetic property Ultimate tensile strength General Materials Science Thermal stability tensile mechanical property Ni-doping amount Composite material Fe-based metallic microwires Microscopy QC120-168.85 Doping QH201-278.5 Microstructure Engineering (General). Civil engineering (General) Nanocrystalline material Amorphous solid TK1-9971 Descriptive and experimental mechanics Fracture (geology) Electrical engineering. Electronics. Nuclear engineering TA1-2040 |
| Zdroj: | Materials, Vol 14, Iss 3589, p 3589 (2021) Materials Volume 14 Issue 13 |
| ISSN: | 1996-1944 |
| Popis: | Herein, the effect of Ni-doping amount on microstructure, magnetic and mechanical properties of Fe-based metallic microwires was systematically investigated further to reveal the influence mechanism of Ni-doping on the microstructure and properties of metallic microwires. Experimental results indicate that the rotated-dipping Fe-based microwires structure is an amorphous and nanocrystalline biphasic structure the wire surface is smooth, uniform and continuous, without obvious macro- and micro-defects that have favorable thermal stability and moreover, the degree of wire structure order increases with an increase in Ni-doping amount. Meanwhile, FeSiBNi2 microwires possess the better softly magnetic properties than the other wires with different Ni-doping, and their main magnetic performance indexes of Ms, Mr, Hc and μm are 174.06 emu/g, 10.82 emu/g, 33.08 Oe and 0.43, respectively. Appropriate Ni-doping amount can effectively improve the tensile strength of Fe-based microwires, and the tensile strength of FeSiBNi3 microwires is the largest of all, reaching 2518 MPa. Weibull statistical analysis also indicates that the fracture reliability of FeSiBNi2 microwires is much better and its fracture threshold value σu is 1488 MPa. However, Fe-based microwires on macroscopic exhibit the brittle fracture feature, and the angle of sideview fracture θ decreases as Ni-doping amount increases, which also reveals the certain plasticity due to a certain amount of nanocrystalline in the microwires structure, also including a huge amount of shear bands in the sideview fracture and a few molten drops in the cross-section fracture. Therefore, Ni-doped Fe-based metallic microwires can be used as the functional integrated materials in practical engineering application as for their unique magnetic and mechanical performances. |
| Databáze: | OpenAIRE |
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