Eventos Anais de eventos
COBEM 2021
26th International Congress of Mechanical Engineering
CHARACTERIZATION OF HIGH MANGANESE STEEL (FE27MN1SI) SUBMITTED TO ABRASION WEAR TEST AND SOLUTION HEAT TREATMENT
Submission Author:
Rafaela Luna Alencar , PI , Brazil
Co-Authors:
Rafaela Luna Alencar, Waydson Martins Ferreira, Marcos Lima, Clésio Melo, Miqueias Sousa Silva, Patrick Abreu
Presenter: Rafaela Luna Alencar
doi://10.26678/ABCM.COBEM2021.COB2021-1295
Abstract
High manganese steel has been increasingly studied due to its applications in cryogenic temperatures. These steels are mainly formed by carbon and manganese, with manganese being used as austenite stabilizer. One of the most important characteristics of these steels is their resistance to wear. Its great use for parts subjected to wear is due to the properties of surface hardening provided by work and toughness. There are two transformation mechanisms that occur in this alloy, the transformation induced plasticity (TRIP), in which the martensitic transformation occurs and the twinning induced plasticity (TWIP), in which mechanical twinning occurs. The present work aims to characterize the Fe27Mn1Si alloy when submitted to the abrasion wear test with different loads and to compare the martensite formation between samples solution heat treatment at different temperatures. Five samples were used, one as received, two solubilized at 800 ° C and two solubilized at 1100 ° C. In the wear test, two different loads, 46.8 and 192.9 kg, were used and tested on the universal wear test machine. The samples were weighed before and after wear test to calculate the mass loss. To verify the martesite formation, optical microscopy was performed in five samples. Finally, the samples passed the vickers microhardness test. The samples that were solubilized at 800 ° C showed greater resistance to wear. High manganese steel samples showed greater wear resistance for the wear test with a 192.9 kg load. Optical microscopy showed the martensite formation in the worn out samples with 46.8 kg load. Observing the results of the microhardness test, it is noted that there was hardening of the material in relation to as received sample. The results obtained in the vickers wear and microhardness test were compared with the results obtained in the 304 stainless steel samples studied in literature.
Keywords
wear test, TRIP effect, austenite, transformation mechanisms, high manganese steel
