Second phase structure analysis and wear behavior of the ultra-high manganese steel

Abstract The high manganese steel is widely used in wear-resisting parts of the cone crusher, such as the grinding mill wall and crushing wall. In this work, the microstructure and wear resistance of an ultra-high manganese steel (Mn18Cr2Mo) were analyzed by electron diffraction and high-resolution transmission electron microscope (HRTEM) observation and impact abrasive wear test. The results show that there are spherical or block Mo 2 C and strip-like (Fe, Cr) 3 C phases in Mn18Cr2Mo manganese steel. The orientation of the Mo 2 C phase and the austenite matrix are [001] austenite // 10 1 ¯ Mo 2 C , (020) austenite //(020) Mo 2 C , 2 ¯ 00 austenite //(202) Mo 2 C and 2 ¯ 20 austenite //(242) Mo 2 C . The that of the (Fe, Cr) 3 C phase and the austenite matrix are [011] austenite // 12 1 ¯ (Fe, Cr) 3 C and 11 1 ¯ austenite //(210) (Fe, Cr) 3 C . Besides, 1 ¯ 1 1 ¯ austenite is approximately parallel to 1 1 ¯ 3 (Fe, Cr) 3 C . The interface relation of (002) austenite is approximately parallel to 1 ¯ 2 ¯ 3 (Fe, Cr) 3 C . Owing to high density dislocations, deformation bands, microcrystal and non-crystalline, the wear resistance of the Mn18Cr2Mo manganese steel is 1.