高速列车车轮用材料的开发动向

Development Trend of High-Speed Rail Wheel Material

介绍了国内外高速列车的发展概况、高速列车车轮的损伤形式以及高速列车车轮用新材料的开发动向。在开发高速列车车轮用材料时,普遍的思想是适当降低车轮材料的碳含量,并进行微合金化,在略微降低甚至不降低材料的强度和硬度的情况下,大幅度提高车轮材料的韧性,从而改善车轮的抗损伤性能,尤其是高速行驶时的抗剥离性能。这一思想对我国的铁路运输高速化也有实际的指导意义。

The survey of domestic and foreign railway development, the damnification forms of highspeed rail wheel and the development trend of new materials for highspeed rail wheel are introduced. The common idea in developing new materials for highspeed railway wheel is to reduce the content of carbon and add some microalloying elements. The reduction of strength and increment of toughness result in the increasing of rhegmaresistance, especially in the increasing of shellingresistance. This idea is very important to railway speedupgrading in our country.