复合变质处理对高铬铸铁组织的影响  

Effect of Composite Modification on Microstructure of High Chromium Cast Iron

作　　者：王更生 王胜良 王烁 WANG Gengsheng;WANG Shengliang;WANG Shuo(Shijiazhuang Shenghua Group Co.,Ltd.,Shijiazhuang 050800,Chin)

机构地区：[1]石家庄盛华企业集团有限公司,河北石家庄050800

出　　处：《铸造技术》2018年第7期1460-1462,共3页Foundry Technology

摘　　要：针对高铬铸铁件耐磨内衬板裂纹缺陷,通过变质处理,细化了初生的碳化物,使细小的碳化物均匀弥散分布在马氏体基体上,克服了铸件内的裂纹缺陷,在保证产品硬度和耐磨性的前提下,铸件的冲击韧度得到提高。For the crack defects of high chromium cast iron parts with wear-resistant lining,the primary carbides were refined by modification.The uniform dispersion of fine carbides is distributed on martensite matrix,at the same time,the crack defects in the casting are overcome.The impact toughness of the casting is improved under the premise of ensuring the hardness and wear resistance of the product.

关 键 词：变质处理 裂纹 冲击韧度 显微组织 

分 类 号：TG251[金属学及工艺—铸造]