连续冷却贝氏体球铁成分和工艺的研究  

Continuous Cooling of Bainite Ductile Iron

作　　者：徐杨[1] 周世康[1] 

机构地区：[1]中国农业大学机械工程学院,北京100083

出　　处：《现代铸铁》2003年第3期12-15,共4页Modern Cast Iron

摘　　要：探讨了连续冷却的各工艺参数对含铬、钼、铜、锰、硼、铌等多元微量元素的合金球铁显微组织和强韧性能的影响,从而制订了获得贝氏体组织的新工艺,并以锤片、齿轮、杂质泵过流部件等为对象进行了生产验证,结果表明,采用该工艺可以稳定地获得贝氏体组织,其力学性能良好(硬度超过50HRC,冲击韧度超过10J·cm-2),经济效益显著。The new technology of Continuous Cooling Bainite Ductile Iron with the trace element Cr-Mo-Cu-B-Mn-Nb have been studied.The effects of heat treatment parameters on the structure and properties have been discussed.The Parts made of this material have been used in production.The re-sults shows that the Bainite structure and good mechanical properties(the hardness exceeds50and the impact toughness exceeds10J·cm -2 )can be obtained by using this technology.The economic benefits notable.

关 键 词：贝氏体球铁 连续冷却 工艺参数 显微组织 性能 球墨铸铁 铸造 

分 类 号：TG143.5[一般工业技术—材料科学与工程] TG255[金属学及工艺—金属材料]