MAGNETIC PROPERTIES OF TITANIUM-CONTAINING LOW-NICKEL MARAGING STEEL PRODUCED BY ELECTROSLAG REMELTING TECHNOLOGY

The study of the correlation between structure and physical properties is of fundamental importance in material science. All the physical and chemical properties of a material are strongly structure dependent, and the knowledge of the microstructure is of basic importance in the design and development of new material for technological application. In this work, effect of Electroslag on cleanliness: size, count, distribution of nonmetallic inclusion and consequently on the magnetic properties of Ti-containing cobaltfree low-nickel Maraging steel were studied. Microstructure and effect of chemical composition is present. Identification and quantitative of different phases were measured by X-ray diffraction. Also, quantitative of magnetic and non-magnetic phases was measured by magnetization measurements. The experimental results indicated the strong positive effect of Electroslag Remelting, ESR on reducing the number of large NMI. The accumulative count of NMI decreases by different investigated ESR slags. ESR process redistributes and decreases the count of non-metallic inclusions. The number of NMI per mm decreases by ESR under investigated slags. Also, Results indicate that, the values of magnetic properties changes with changes in chemical composition, production technology, size and distribution of second phase.