1. Ce is depleted from ferrite and pearlite surrounded by nodular graphite, and enriched in pearlite and ledeburite far apart from nodular graphite. 球墨周围的铁素体和珠光体是贫铈的，而远离球墨的珠光体和莱氏体是富铈的。
2. The cracks mainly propagate at interfaces between the steel matrix and the eutectic ledeburite, and in the steel matrix and through the eutectic carbide. 热疲劳裂纹主要在钢基体与共晶莱氏体界面处、钢基体内扩展及穿越共晶碳化物。
3. Novel ledeburite cast die steel with granular carbide was fabricated to increase the strength and toughness of conventional ledeburite cast die steel with network carbide. 研制了含粒状碳化物的新型莱氏体型铸造模具钢，发现其可使传统莱氏体型铸造模具钢的低强韧性得以提高，并探讨了其磨损机理。
