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Wear-resistant alloy steel mainly by adding Cr, Mo, V, Ti, rare earth and other elements to the traditional composition of high manganese steel to improve the performance, of which Cr is particularly widely used. In the process of work hardening of high manganese steel, dynamic variational aging, that is, C- Mn atomic pairs, is formed, which has the clustering effect of expanding the C- Mn ordered atomic pairs in high manganese steel. In this paper, the changes in the organization, structure, resistance and wear resistance of wear-resistant alloy steel and ordinary high manganese steel with different tempering temperatures are studied. The results show that the wear-resistant alloy steel is better than ordinary high manganese steel under the condition of relatively low carbon content. Moreover, according to the tempering temperature, the structure of the alloy high manganese steel is different, and the wear resistance is also different.

Wear-resistant alloy steel mainly by adding Cr, Mo, V, Ti, rare earth and other elements to the traditional composition of high manganese steel to improve the performance, of which Cr is particularly widely used. In the process of work hardening of high manganese steel, dynamic variational aging, that is, C- Mn atomic pairs, is formed, which has the clustering effect of expanding the C- Mn ordered atomic pairs in high manganese steel. In this paper, the changes in the organization, structure, resistance and wear resistance of wear-resistant alloy steel and ordinary high manganese steel with different tempering temperatures are studied. The results show that the wear-resistant alloy steel is better than ordinary high manganese steel under the condition of relatively low carbon content. Moreover, according to the tempering temperature, the structure of the alloy high manganese steel is different, and the wear resistance is also different.

After water toughness treatment, the tempering temperature of wear-resistant alloy steel gradually increased to 250. The wear loss of alloy high manganese steel decreased and the wear resistance increased. When the temperature rose from 250 to 350, the wear loss increased slightly and the wear resistance decreased, but it was better than the wear resistance of alloy high manganese steel after water toughness treatment. If the temperature continues to rise to 500, the amount of wear will continue to increase, and the wear resistance will decrease, which is lower than the wear resistance in the water toughness state, which further proves the existence of ordered micro-regions in the alloy high manganese steel.

For ordinary high manganese steel, with the increase of temperature, the carbon atoms in the austenite matrix will also move, forming Mn and C- Mn atoms, but because the combination between manganese and carbon atoms is relatively weak, the size of the short-distance aligned micro-area is relatively small, 250 the lattice distortion after tempering has been restored to a certain extent, 250 the weakening of the solution strengthening after tempering, the wear resistance is slightly reduced.

When the tempering temperature continues to rise from 250 to 350, the activity of carbon atoms in alloy high manganese steel will increase with the increase of temperature. Carbides will not precipitate after tempering at this temperature, but the lattice distortion of austenite will further decrease and the solution strengthening effect will weaken, but carbides have not yet precipitated. Therefore, there are still many micro-regions. Compared with 250 tempering, when the temperature of general high manganese steel rises to 400, part of the carbon will precipitate at the diffraction line. The other micro-region is in the sub-structure state before carbide precipitation. The micro-regions of this sub-structural state are carbon-rich regions and therefore contain an abundance of C- Mn ordered pairs of atoms. Uniformly distributed, dispersed, dispersed microscopic areas and the pinning effect of dispersed carbides incorrectly arranged make up for the weakening of solution strengthening to a certain extent, so the macroscopic mechanical properties are manifested as poor wear resistance. If the temperature continues to rise to 500, the wear-resistant alloy steel begins to precipitate carbides, and the basic lattice constant of austenite is basically normal.