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作者来用B与RE-Si合金,对高Cr-Mn白口铸铁(13%Cr、14%Mn)进行综合变质处理,可使碳化物由粗大的、互相交错的杆簇群,变为彼此孤立的、平行分布的细杆,冲击韧性达ak＝0．6~0．7kg·m/cm2。在高应力磨料磨损试验中,与Cr15Mo3相比,相对抗磨性达1．01; 在反复冲击磨料磨损试验中,相对抗磨性达0．95,而其成本比Cr15Mo3铸铁约低46%。试验和实践证明,经RE-B综合变质处理的高Cr-Mn白口铸铁,可以成为Cr15Mo3铸铁很好的代用材料。
Using B and RE-Si alloys, the authors conducted comprehensive metamorphism treatments on high-Cr-Mn white cast iron (13% Cr, 14% Mn) to allow carbides to grow from coarse, staggered rod clusters to each other Isolated, parallel to the distribution of thin rod, impact toughness up to ak = 0.6 ~ 0.7kg · m / cm2. In the high stress abrasive wear test, the relative abrasion resistance is 1.01 compared with that of Cr15Mo3. In repeated impact abrasion test, the relative abrasion resistance is 0.95 and the cost is about 46% lower than that of Cr15Mo3 cast iron. Experiments and practices have proved that the high Cr-Mn white cast iron with RE-B comprehensive modification can be a good substitute material for Cr15Mo3 cast iron.