冷轧工作辊用半高速钢中碳化物的溶解和析出  

Dissolution and Precipitation of Carbides in Semi High Speed Steel for Working Rolls of Cold Rolling Mill

作　　者：刘德富[1] 尹钟大[1] 徐德祥[2] 高峰[2] 李朝华[2] 赵晗[2] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院,黑龙江哈尔滨150001 [2]东北特殊钢集团有限责任公司,辽宁大连116031

出　　处：《钢铁》2005年第4期69-71,82,共4页Iron and Steel

摘　　要：采用X—射线衍射分析、TEM组织观察和电子衍射分析,对新型半高速钢在加热和冷却及回火过程中碳化物的溶解和析出行为进行了研究。结果表明,退火状态下钢中含有MC、M6C和M7C3 型碳化物;淬火加热时M6C和M7C3 型碳化物全部溶解,回火过程中析出MC、M2C、M6C和M7C3 型碳化物,当回火温度为520 ℃时出现硬度峰值,此时Mo2C的弥散强化起主要作用。The dissolution and precipitation during heating, cooling and tempering of a new kind of semi high speed steel were studied by means of X-ray diffraction analysis, TEM microstructure examination and electron diffraction. The results showed that in the annealed state there are MC,M_6C and M_7C_3 in the steel; M_6C and M_7C_3 are dissolved totally during heating for quenching, MC,M_2C, M_6C and M_7C_3 are precipitated during tempering. The peak hardness of the steel is reached after tempering at 520 ℃. The precipitation strengthening of the Mo_2C is the main factor of strengthening in this case.

关 键 词：冷轧工作辊 半高速钢 碳化物 溶解 析出 相分析 

分 类 号：TF763.3[冶金工程—钢铁冶金]