45钢棒料的质量检验和重结晶退火工艺研究  

Research on quality inspection and recrystallization annealing process of 45 steel bars

作　　者：丁霞[1] 王倩[1] 李保民 董庆信 杜伟 李木森[1] 

机构地区：[1]山东大学材料液固结构演变与加工教育部重点实验室,山东济南250061 [2]山东博特精工股份有限公司,山东济宁272071

出　　处：《金属热处理》2012年第3期106-108,共3页Heat Treatment of Metals

基　　金：国家工信部重大专项课题(2011ZX04014-031)

摘　　要：45钢棒料制成的工件经正火或调质处理后存在局部难以加工的问题,通过硬度、化学成分、金相、扫描电镜和能谱等方法对其进行了检验和分析。结果表明,该棒料组织不均匀,有网状铁素体及带状偏析,局部存在屈氏体组织和金属或非金属夹杂。采用重结晶退火可以改善原有组织的缺陷,满足工件的加工性能要求。There is local difficult processing in 45 steel parts after normalizing or quenching and tempering treatment,and it was tested and analyzed by hardness,chemical composition,microstructure,scanning electron microscopy and electronic spectroscopy etc.The results show that the microstructure of the 45 steel bars is uneven,and there is ferrite network,banded segregation,local troostite and some metallic or non-metallic inclusion.The original tissue defects can be improved by recrystallization annealing to meet the machining performance requirements of 45 steel parts.

关 键 词：45钢 硬度 显微组织 重结晶退火 

分 类 号：TG156.21[金属学及工艺—热处理]