硼对含碳化物马氏体球墨铸铁组织和性能的影响  

Effect of Boron on Microstructure and Properties of Carbide Martensitic Ductile Iron

作　　者：姜利坤[1] 琚子来[2] 李卫红[1] 黄曼曼[2] 吴永婷 刘运腾[1] JIANG Li-kun JU Zi-lai LI Wei-hong HUANG Man-man WU Yong-ting LIU Yun-teng(New Material Institute of Shandong Academy of Sciences, Jinan 250013, Shandong, China Department of Mechanical Engineering of Tangshan Polytechnic College, Tangshan 063020, Hebei, China Shandong Luqing Safety Assessment Technology Co., Ltd., Jinan 250101, Shandong, China)

机构地区：[1]山东省科学院新材料研究所,山东济南250013 [2]唐山工业职业技术学院机械工程系,河北唐山063020 [3]山东鲁轻安全评价技术有限公司,山东济南250101

出　　处：《铸造》2017年第2期192-194,共3页Foundry

基　　金：河北省高等学校科学技术研究项目(Z2014092)

摘　　要：制备了一种含硼、铬、钒合金元素的含碳化物马氏体球墨铸铁,并系统研究了硼含量对材料组织结构和力学性能的影响。结果表明:当B<0.1%时,组织中石墨球圆整,大小均匀,球化良好;当B>0.1%时,石墨球圆整度降低,大小分布不均。铸件的热处理条件为:奥氏体化温度900℃,然后在10%氯化钠水溶液中淬火,最后230℃回火。当B为0.06%时,该材料的硬度和冲击韧性具有良好的匹配,硬度为HRC58~61,冲击韧性为8~11 J/cm^2。A martensitic ductile iron containing boron, chromium and vanadium was developed, and the effect of boron on microstructure and properties was researched. The results indicate that when boron content is less than 0.1%, the graphite balls have roundness shape, uniform size and good morphology. When boron content was more than 0.1%, the roundness of graphite ball would reduced, the size and distribution of graphite ball was nonuniform. Under the heat treatment condition ofaustenitizing temperature 900℃, 10% NaCl solution quenching and tempering temperature 230℃, when boron content was 0.06%, hardness and impact toughness had a better match, the hardness was HRC58 -61 and the impact toughness was 8 - 11J/cm2.

关 键 词：球墨铸铁 硼 碳化物 马氏体 力学性能 

分 类 号：TG255[金属学及工艺—铸造] TG164.2