Search academic texts

Information × Registration Number 0225U000028, (0123U103010) , R & D reports Title Features of interaction of high-entropy alloys with iron-based melts popup.stage_title Дослідження особливостей використання високоентропійних сплавів в якості добавок для сплавів на основі заліза. Head Parkhomchuk Zhanna V., Кандидат технічних наук Registration Date 02-01-2025 Organization Physico-technological institute of metals and alloys National academy of Sciences of Ukraine popup.description1 Investigation of the features of the interaction of highly tropical alloys with iron-based melts and the creation of technological approaches for obtaining alloys with enhanced properties by optimizing the structure of phases. popup.description2 The aim of the scientific project is to study the interaction of high-entropy alloys with iron-based melts and to develop technological approaches for producing an antifriction alloy with enhanced properties and self-lubricating capability under operating conditions. Research methods include metallographic analysis, X-ray phase analysis, differential scanning calorimetry, and the determination of casting and physico-mechanical properties. The optimal technological parameters for obtaining a high-entropy alloy of the Fe-Ni-Cr-Cu-Mn system by casting have been established, and its phase-structural composition and properties have been investigated. X-ray phase analysis revealed that the alloy consists of two solid solutions based on FCC phases and complex carbides (FeCr)₇C₃. The relatively low melting temperature of the developed Fe-Ni-Cr-Cu-Mn alloy ensures energy-efficient alloying without the need for significant overheating and prolonged holding times compared to alloying with individual components. It has been determined that the optimal amount of the alloy addition to gray cast iron is 0.5 wt.%, resulting in an alloyed cast iron with chemical composition, structure, and properties that meet the requirements for antifriction materials. The feasibility of using the Fe-Ni-Cr-Cu-Mn alloy as an energy-efficient master alloy for the production of antifriction materials with enhanced properties has been demonstrated. Product Description popup.authors Veis Valentyn I. Zhelezniak Oleksii V. popup.nrat_date 2025-01-02 Close