改善Fe-B-C合金韧性的研究  

Study on Improving the Toughness of Fe-B-C Alloy

作　　者：匡加才[1] 符寒光[2] 叶昌[1] 刘冶球[1] 陈亚平[3] 

机构地区：[1]长沙理工大学材料科学与工程学院,湖南长沙410076 [2]清华大学先进成形制造教育部重点实验室,北京100084 [3]湖南水利水电职业技术学院,湖南长沙410131

出　　处：《四川大学学报（工程科学版）》2006年第4期105-109,共5页Journal of Sichuan University (Engineering Science Edition)

基　　金：中国博士后科学基金资助项目(2004036058)

摘　　要：为了提高Fe-B-C合金的韧性,应用稀土-钛-氮复合变质剂改善Fe-B-C合金组织和性能.结果发现,Fe-B-C合金复合变质处理后的凝固组织明显细化,且组织分布均匀,并出现钛硼化合物,钛硼化合物不同于普通Fe-B-C合金中的Fe2B呈网状分布,而是呈断网状和块状分布,特别是经高温热处理后,硼化物变成球状和棒状,Fe-B-C合金韧性明显提高,由8～10 J/cm^2提高至22～25 J/cm^2.经变质处理的Fe-B-C合金可用于制造轧钢机导卫板,其耐磨性比高镍铬合金钢提高1.3倍.In order to improve the toughness of Fe- B- C alloy, the effect of Rare earth（RE） - Ti- N composite modification on the microstructures and properties of Fe- B - C alloy was researched. The results showed that the solidification structures of Fe- B - C alloy is refined obviously and the distribution of structures is uniform after composite moditication. Moreover, the compound containing boron and titanium appeared in Fe- B- C alloy containing RE - Ti - N. The compound containing boron and titanium was different from the network Fo2B in the common Fe - B - C alloy, whose distribution was broken network and lump. After heat treatment the boride in Fe- B - C alloy containing RE - Ti - N tumed into nodular and rod and the toughness of ICe - B - C alloy is incw.ased obviously, from 8 - 10 J/cm^2 to 22 -25 J/cm^2. Fe - B - C alloy containing RE - Ti - N was used to produce the guide of rolling mill, its abrasion resistance is 1.3 times higher than that of high Ni - Cr alloy steel.

关 键 词：Fe-B-C合金 硼化物 变质处理 冲击韧性 导卫板 

分 类 号：TG142.72[一般工业技术—材料科学与工程]