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Metal science and Metallography
ArticleName Effect of destruction of microheterogeneity on microstructure and crystal structure of 110G13L steel ingots (Hadfield steel)
ArticleAuthor I. I. Sinitsyn, O. A. Chikova, D. S. Chezganov

Ural Federal University (Ekaterinburg, Russia):

I. I. Sinitsyn, Post-graduate, Dept. of Physics, Institute of Fundamental education, e-mail:
O. A. Chikova, Dr. Phys.-Math., Prof., Dept. of Physics, Institute of Fundamental education, e-mail:
D. S. Chezganov, Cand. Phys.-Math., Senior Researcher, Dept. of Optoelectronics and Semiconductors Technology, Institute of Natural Science and Mathematics, e-mail:


The results of a comparative study of the microstructure and crystalline structure of 110G13L steel ingots (Hadfield steel), crystallized after heating to 1450 °С and 1630 °С, are presented. Hadfield steel is known for its high hardness, wear resistance and is characterized by a content of 0.95–1.50 wt.% carbon and 11.5–15.0 wt.% manganese. Previously, the authors found then heating of the 110G13L liquid steel to a temperature above 1630 °C leads to the destruction of microheterogeneity and changes the conditions for crystallization of metal. Microheterogeneity is understood to mean the presence of dispersed particles enriched in manganese in liquid steel, which are suspended in the environment of a diff erent composition and separated from it by a interfacial surface. The destruction of microheterogeneous state of the melt occurs when it is heated above a certain temperature — in case of liquid steel 110G13L to a temperature of 1500 °C. The relationship between destruction of the microheterogeneous state of the liquid steel 110G13L and the changes of microstructure and crystalline structure of cast metal we investigated. Microstructure of Hadfi eld steel ingots is represented by dendrites of austenite; the interdendritic space is filled with a ferritic-pearlitic mixture with carbides, oxides, phosphites and sulfites. Destruction of microheterogeneity of the melt led to changes in microstructure of ingot: carbides and signs of disintegration of austenite are absent at boundaries of dendrites, and porosity of ingot increases. Destruction of microheterogeneity during subsequent cooling and crystallization also caused chemical heterogeneity of dendrites austenite over manganese. Destruction of microheterogeneity of the melt led to changes in crystal structure of ingot: the proportion of low-angle grain boundaries increased, the value of local mechanical stresses decreased, which should lead to an increase in ductility and corrosion resistance of metal.
The work was performed using the equipment of the “Modern Nanotechnologies” UCSU of the Ural Federal University. The study was carried out with the financial support of the RFBR in the framework of the scientific project No. 19-33-90198.

keywords Hadfield steel, crystallization conditions, microstructure, EDS analysis, crystal structure, EBSD analysis, Schmid factor

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