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5 years of the united department “Metallurgy and ma-terials processing technology” of Sukhoi State technical University of Gomel
ArticleName Strength, plasticity, microhardness and inhomogeneous plastic deformation of strips made of amorphous multicomponent iron-based alloys
DOI 10.17580/chm.2021.11.05
ArticleAuthor M. N. Vereshchagin, V. G. Shepelevich, O. M. Ostrikov

Sukhoi State Technical University of Gomel (Gomel, Belarus):

M. N. Vereshchagin, Dr. Eng., Professor, Dept. of Metallurgy and Materials Processing Technology
O. M. Ostrikov, Cand. Phys.-Math., Associate prof., Dept. of Mechanics, e-mail:


Belarusian State University (Minsk, Belarus):

V. G. Shepelevich, Dr. Phys.-Math., Professor, Dept. of Solid State Physics


The structure of rapidly quenched ribbons from multicomponent iron-based alloys Fe81.4-Cr4.0-Mo6.0-Ni5.2-C1.0-Mn2.1-Al0.3, Fe71.7-Ni6.0-Co2.4-Cr7.5-Mo7.9-B4.0-Si0.5, Fe86-P9.8-C1.0-Si0.9-Al1.7-B0.6 has been studied by the methods of X-ray diffraction, X-ray phase and micro-Rhspectral analysis, and electron microscopy. It is shown that these materials are X-ray amorphous, and chemical elements are evenly distributed in them. Some physical and mechanical properties (strength, plasticity, microhardness) of amorphous multicomponent iron-based alloys have been experimentally investigated. It is shown that the alloy Fe81.4-Cr4.0-Mo6.0-Ni5.2-C1.0-Mn2.1-Al0.3; has the highest ductility; the highest strength and microhardness is the Fe71.7-Ni6.0-Co2.4-Cr7.5-Mo7.9-B4.0-Si0.5 alloy. Alloy Fe86-P9.8-C1.0-Si0.9-Al1.7-B0.6 is the most fragile, soft and fragile. It was found that the Fe81.4-Cr4.0-Mo6.0-Ni5.2-C1.0-Mn2.1-Al0.3 alloy has the highest inhomogeneous plasticity upon indentation of the surface by the Vickers pyramid. The features and regularities of inhomogeneous plastic deformation of multicomponent amorphous alloys based on iron at room temperature have been studied by the method of surface indentation. It is shown that two types of shear bands are formed at the indentation of the indenter on the surface of the amorphous ribbon: in the form of rays coming from the indentation, and in the form of rings bordering the indentation of the indenter. Under a load on the indenter of 1 N, the shear bands in the form of rays in the Fe71.7-Ni6.0-Co2.4-Cr7.5-Mo7.9-B4.0-Si0.5 alloy have the longest length, and shear bands in the form of rings in the Fe81.4-Cr4.0-Mo6.0-Ni5.2-C1.0-Mn2.1-Al0.3 alloy.

keywords Amorphous materials, metallic glass, multicomponent alloy, plasticity, strength, microhardness, ultrafast quenching of the melt, inhomogeneous plastic deformation

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