在工程机械和矿山机械中,有許多主要的磨損零件,例如挖掘机斗齿、履带板、鏟运机械的鏟刀、破碎机衬板等等,通常是在凿削式(冲击式)的磨料磨損条件下工作的;这些零件既要具有优良的耐磨性又要有优良的韌性。这些零件通常是用奥氏体高錳鋼制造的。要改善高錳鋼的耐磨性,可以增加高錳鋼的含碳量。但是随着含碳量的增加,往往会在晶粒边界上出現脆性的网状碳化物,或者有脆性的片状碳化物沿着晶体学平面产 In construction machinery and mining machinery, there are many major wear parts such as excavator bucket teeth, track shoes, shovels for shovels, crusher linings, and the like, typically in the form of chipping (impact) abrasives Wear work conditions; these parts should have both excellent wear resistance but also have excellent toughness. These parts are usually made of austenitic high manganese steel. To improve the wear resistance of high manganese steel, can increase the carbon content of high manganese steel. However, as the carbon content increases, brittle network carbides often appear at grain boundaries or friable plate carbides along crystallographic planes