Effect of Industrial Raw Materials on the Glass-Forming Ability, Magnetic and Mechanical Properties of Fe-Based Bulk Metallic Glasses

Abstract

Pseudo-ternary Fe 78 P 13 C 9 (the real composition is Fe 77.6 Si 1.4 P 12.7 C 8.3 ) bulk metallic glasses (BMGs) with the maximum diameter of 1.5 mm based on industrial raw materials has been prepared by J-quenching technique using the master alloys with fluxing treatment, whereas fully amorphous alloy rod with the diameter of 1.0 mm cannot be obtained by the same preparation method using the master alloy without fluxing treatment. It is indicated that the glass formation ability (GFA) of the present Fe-based alloys based on industrial raw materials can be greatly enhanced through fluxing treatment. For comparison, the amorphous alloy rod with the same composition based on the pure raw materials has also been prepared by the same preparation technique and the critical diameter for fully glass formation gets to 2.0 mm. The DSC result indicates that the present Fe-based BMG based on industrial raw materials reveals higher thermal stability compared with the BMG based on pure raw materials. The magnetic tests show that the saturation magnetizations of the present Fe-based BMGs prepared by pure raw materials and industrial raw material are around 1.40 T, and have no significant difference. Compressive tests show that the present Fe-based BMG based on industrial raw materials exhibits higher compressive fracture strength (3.11 GPa) and slightly less plastic strain (0.8 pct) compared with the BMG based on pure raw materials with the same composition.

Machine learning prediction of magnetic properties of Fe-based metallic glasses considering glass forming ability

“…These theories or models that consider insufficient factors usually have many exceptions, and their estimation accuracy is limited. Therefore, it is still a challenge to reveal an accurate variation pattern of the soft magnetic properties of FeMGs based on physiochemical theories, so a large number of experiments consider a trial-and-error strategy to develop high-performance metallic glasses 4 [17][18][19][20][21][22][23][24][25][26].…”

A Study of Structure and Magnetic Properties of Low Purity Fe-Co-Based Metallic Glasses

“…Available in the literature [1,3,8,9,13,14,17,25], the results of investigations of the structure and properties of metallic glasses are mainly based on alloys produced from pure elements. Although the metallic glasses have been manufactured and investigated for many years, the current knowledge about the structure and properties of MGs prepared on the basis of industrial materials, such as ferroalloys, remains limited [33,34,35,36]. Of the available ferroalloys, Fe-B is mainly used for manufacturing metallic glasses [33,34,35,36].…”

“…Although the metallic glasses have been manufactured and investigated for many years, the current knowledge about the structure and properties of MGs prepared on the basis of industrial materials, such as ferroalloys, remains limited [33,34,35,36]. Of the available ferroalloys, Fe-B is mainly used for manufacturing metallic glasses [33,34,35,36]. In the literature, there are still no data on the structure and properties of the metallic glasses made by combining a few ferroalloys (Fe-B, Fe-Si, Fe-Nb), which determine their industrial application [37].…”