Research status and development trend of low and medium alloy wear-resistant steel
Research status
Low and medium alloy wear-resistant steels are developed mainly on the basis of high-manganese steel. Researchers have improved the wear resistance of high-manganese steel in many ways, such as adding more alloy elements, optimizing the morphology of carbides, and exploiting the related properties of alloy elements. Such steels are called low and medium alloy wear-resistant steels, and their wear resistances can reach: 6-7 times higher than those of high-manganese steels. Low and medium alloy wear-resistant steels not only have low specific weight, good hardenability, but also have excellent impact toughness, strength, and abrasive wear resistance at room temperature.
Development trend
In the future, researchers are likely to pay more attention to developing high-strength and high-hardness low and medium alloy wear-resistant steels, increasing their ability to resist fracture and impact damage. In order to reduce weight and cost, it will still mainly be low and medium alloy wear-resistant steels. The grain size of low and medium alloy wear-resistant steels will also be continuously refined to improve their strength and wear resistance.
The research and development of low and medium alloy wear-resistant steels are also focusing on improving their corrosion resistance. Adding various alloy elements or separating corrosion-resistant surface can improve corrosion resistance. In addition, surface treatment such as nitriding, plasma nitriding, micro-arc oxidation, oxyacetylene spray and so on can improve the corrosion resistance of low and medium alloy wear-resistant steels.
In recent years, surface engineering technology has made a great progress. With the new surface engineering technology, the surface properties of low and medium alloy wear-resistant steels can be greatly improved. The surface layer of the steels can be precisely modified, which can improve their surface performance and enhance their wear resistance.
In addition, due to the rapid development of metal forming technology, low and medium alloy wear-resistant steels are more used as structural materials in production. With the arrival of the era of metal 3D printing, more low and medium alloy wear-resistant steels with complex 3D shapes and superior performance will be put into use in the near future.
From the above, it can be seen that with the rapid development of society and technology, low and medium alloy wear-resistant steels will continue to be improved and developed, and the application of low and medium alloy wear-resistant steels will become more widely and widely.
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