Properties and microstructure of high performance wheels

摘要: The methodology followed by Transportation Technology Center, Inc., to develop a pearlitic high performance wheel steel (identified as SRI) is described in the first part of this paper. Ideally, will be proposed Association American Railroads (AAR). If successful, SRI identified AAR Class D steel. second paper provides results mechanical testing seven wheels (six and one bainitic) manufactured different companies are compared Some these steels had been tested heavy haul lines, but not USA environment. indicate that properties superior those C Vacuum degassing can significantly improve fatigue resistance recommended for experimental were forged Brasil at MWL facilities. cleanliness other show among steels, has highest properties.