Effects of impact energy on the wear resistance and work hardening mechanism of medium manganese austenitic steel

Abstract

Medium manganese austenitic steel (MMAS) fabricated through the hot rolling process has been used in the mining, military, and mechanical industries. In this paper, the abrasion performance and hardening mechanism were measured under a series of impact energies. The impact wear was tested at different impact energies from 0.5 J to 6 J using a dynamic load abrasive wear tester (MLD-10). Microstructure and surface morphologies were analyzed using scanning electron microscopy, X-Ray diffraction, and transmission electron microscopy. The results suggest that MMSA has the best wear resistance at 3.5 J and the worst wear resistance at 1.5 J. Furthermore, the wear mechanism and worn surface microstructure change with different impact energies. There are small differences between a large amount of martensite on the worn surfaces under different impact energies and the shapes of dislocation and twins change with different impact energies.

Influence of aging treatment on mechanical properties and wear resistance of medium manganese steel reinforced with Ti(C,N) particles

“…According to Refs. [2,16,45], the loads adopted in dry sliding wear of this study are 100, 200, and 300 N. The wear losses of the samples under different applied loads are shown in Fig. 7.…”

The roles of microstructural anisotropy in tribo-corrosion performance of one certain laser cladding Fe-based alloy

“…14(a) and 14(b) show the TEM microstructures in the subsurface zone after tribocorrosion test for different samples. The refined microstructure for laser cladding specimen has a higher dislocation density due to the pinning mechanism of higher grain boundary density, which implies a better work hardening capacity [49] and is useful for maintaining surface integrity.…”

Effect of iron powder content on microstructure and mechanical properties of Al2O3p/high manganese steel composites prepared by casting infiltration

“…Figure 8(a) shows that it well reflects the work hardening ability of the high-manganese steel. Because of the high dislocation density in the austenitic high-manganese steel during deformation, a large number of dislocations form a high-density dislocation region, which hinders the dislocation movement, produces a strengthening effect, and results in work hardening of the high-manganese steel [24]. Figure 8(b) shows that the Al 2 O 3 p/high-manganese steel composite has a high work hardening ability as that of the high-manganese steel matrix.…”