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在冲击载荷、高应力湿态磨料磨损条件下(1．47J冲击功),马氏体—贝氏体—奥氏体复相高Si/C中铬铸铁和马氏体高铬铸铁的磨损是以疲劳剥落为主,以显微切削为辅,前者的磨损速度低于后者。复相基体中有韧性相又有硬化相,具有较好的韧性与硬度配合且加工硬化性强,故其较耐磨;复相高Si/C中铬铸铁中有大量M_(7)C_(3)型共晶碳化物,是其耐磨的保障,该碳化物有一定硬韧性且该铸铁的碳化物颗粒较少、碳化物较粗大,一定程度上有利于降低磨损速度。上述两种材料有相近的耐蚀倾向。
The wear of martensite-bainite-austenite multiphase high Si / C medium chrome cast iron and martensite high chromium cast iron under impact load, high stress wet abrasive wear condition (1.47J impact energy) Fatigue spalling, supplemented by micro-cutting, the former wear rate lower than the latter. Complex phase matrix has tough phase and hardened phase, with good toughness and hardness and work hardenability, so it is more wear-resistant; complex phase high Si / C medium chromium cast iron in a large number of M_ (7) C_ ( 3) type of eutectic carbide, is its wear protection, the carbide has a certain toughness and the cast iron carbide particles less coarse, larger carbide, to a certain extent, help to reduce the wear rate. The two materials have similar corrosion resistance.