一种高铬合金耐磨铸铁衬板的热处理
Heat Treatment Process of High-chromium Cast Iron Cleading
陈思杰
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作者单位：(河南理工大学 材料科学与工程学院, 河南 焦作 454000)
中文关键字：高铬合金铸铁； 淬火； 显微组织； 硬度
英文关键字：high-chromium alloy iron casting; quenching; microstructure; hardness
中文摘要：研制了一种高铬合金耐磨铸铁生产耐磨衬板，对高铬合金耐磨铸铁进行(980±5) ℃× 3 h空冷淬火和(220±5) ℃ × 3 h低温回火， 观察了耐磨衬板的金相组织， 测试了不同状态下衬板的硬度， 分析了热处理工艺对耐磨铸铁组织和性能的影响。结果表明， 铸铁铸态组织含奥氏体量多，硬度低；热处理后组织中碳化物弥散度高，组织分布最均匀，耐磨性好。
英文摘要：A kind of wear-resisting cleading of high-chromium cast iron was produced and its heat treatment was carried out with quenching at (980±5) ℃ for 3 h and tempering at (220±5) ℃ for 3 h. The microstructure and the hardness of the wear-resisting cleading was observed and examined. The effects of heat treatment on microstructure and properties of wear-resisting cast iron were analyzed. The results show that austenite content is high and hardness is low as-cast condition. After treatment the carbide has high dispersion degree, the microstructure is uniform and the wearability is good.