High manganese steel, a traditional wear-resistant material, has an austenitic structure during use. Under intense impact and compressive loads, the surface of high manganese steel casting parts undergoes work hardening, with hardness increasing from the original approximately 200 HBS to over 500 HEW, while the core of the casting maintains excellent toughness. This unique structure forms a hard and wear-resistant outer layer on the surface, while the interior retains high toughness and fracture resistance. It is widely used in applications involving impact and abrasive wear.
To further enhance the performance of high manganese steel casting parts, Duma Machinery has conducted extensive research in areas such as alloying, micro-alloying, carbon-manganese content adjustment, and precipitation strengthening treatments. Based on Mn13 steel, Duma has successfully developed a new type of high manganese alloy steel by optimizing the composition and adding appropriate alloying elements like chromium and new micro-alloy additives. After precipitation strengthening heat treatment, Duma conducted an in-depth analysis of the structure and properties of the alloy.
The research results show that after precipitation strengthening heat treatment, the austerity grain size of the new high manganese alloy castings is refined, and carbides are evenly precipitated, significantly improving the wear resistance and work hardening ability of the material. These optimized high manganese steel casting parts exhibit superior performance in terms of wear resistance, impact resistance, and long-term reliability, making them suitable for more demanding working environments.
