The main feature and developing tendency of ultra-fine pearlite steel, bainite steel and hyper-eutectoid steel for high-speed and heavy-haul rail in the world are compared and discussed.

• 对世界高速重载钢轨的发展趋势以及超细珠光体钢轨、贝茵体钢轨和过共析钢轨的主要特点进行了分析和比较。