RE-Al对含钨高铬铸铁变质效果的试验研究  

Effects of Rare Earths and Al Modification Treatment on High Chromium Cast Iron Containing Wolfram

作　　者：郭二军[1] 王丽萍[1] 于忠军 马国睿[1] 付原科[1] 

机构地区：[1]哈尔滨理工大学材料科学与工程学院 [2]哈尔滨航空工业集团,黑龙江哈尔滨150060

出　　处：《中国稀土学报》2005年第2期214-218,共5页Journal of the Chinese Society of Rare Earths

基　　金：黑龙江省自然科学基金项目(E0214);哈尔滨市重点科技攻关项目(2002AA5CG026)

摘　　要：考察了RE,Al对含钨高铬铸铁组织、冲击韧度、硬度、耐磨性等性能的影响。结果表明:铸态未变质的铸铁组织中,奥氏体含量多,碳化物呈粗大板条状分布,晶粒比较粗大;变质后残余奥氏体量明显减少,初生奥氏体显著细化,碳化物由粗大板条状向细板条状、菊花状转变;RE,Al复合变质处理可使铬钨合金白口铸铁的硬度、冲击韧度、耐磨性都得到提高。The effects of the addition RE and Al on structure, impact toughness, hardness, and wear resistance of high chromium cast iron cotaining wolfram were investigated. The results show that the content of austenite is much and the carbide distributed the thick lath form, the grain size is thicker in high chromium casting iron without modification treatment; the amount of residual austenite obviously reduce and the size of austenite greatly fine agter modification treatment, carbide change from thick lath to fine lath form and chrysanthemum form; the hardness, impact toughness, wear resistance of the high chromium casting iron containing wolfram by RE-Al modification treatment are all improved.

关 键 词：RE-Al 变质处理 含钨高铬铸铁 稀土 

分 类 号：TG2[金属学及工艺—铸造]