低合金耐磨铸铁共晶碳化物形态改善的研究
Morphology Improvement of Eutectic Carbides in Low Alloy Wear Resistant Cast Iron
齐麦顺
点击：3937次 下载：0次
作者单位：燕山大学 继续教育学院, 河北秦皇岛 066004
中文关键字：低合金耐磨铸铁；共晶碳化物形态；热变形；热处理
英文关键字：low alloy wear resistant cast iron; morphology of eutectic carbides; hot deformation; heat treatment
中文摘要：针对低合金耐磨铸铁组织中共晶碳化物呈连续网状分布问题，探讨了热处理对变形低合金耐磨铸铁中共晶碳化物形态的影响。结果表明，高温热处理结合变形可使共晶碳化物形态发生显著变化，碳化物由连续的网状变为条块状； 当耐磨铸铁经20%热变形后再经970 ℃保温3 h高温处理后，网状共晶碳化物基本上被条块状碳化物所取代。
英文摘要：Aimed at the eutectic carbides distributed at network shape in the cast iron, the effect of heat treatment on morphology of eutectic carbides in low alloy wear resistant cast iron after deformation was studied. The results show that the morphology and distribution of eutectic carbides in the cast iron improve by high temperature heat treatment and hot deformation, and the morphology of eutectic carbides is changed from continuous network into streaks and blocks; the network eutectic carbides are transformed into streaky and blocky carbides when the cast iron after 20% hot deformation is treated at 970℃ for 3 h.