【摘要】 随着铁路高速化的发展 ,对钢轨的质量也提出了更高要求。《EN铁路用钢轨标准》中断裂韧性、裂纹扩展速率和金属轴向疲劳性能指标已先后被世界上很多国家采纳和应用 ,作为国际招标的标准。本文主要针对包钢生产出口 90 0A钢轨和BNbRE高速轨的断裂韧性、裂纹扩展速率和金属轴向疲劳性能进行研究。更多还原

【Abstract】 Following the development of rails on high speed, the requirement on its quality is improved much more. The indices of the fracture toughness, the fatigue crack growth and the axial load fatigue property in 《EN steel rails standard》 have been adopted as the standard of international bids for rails by many countries all over the world.The paper made research on the three characteristies of 900A rail and BNbRE high speed rail.更多还原