45钢滚轮淬火开裂原因分析  

Failure Analysis of Quenched 45 Steel Used for Rolling Wheel

作　　者：燕样样[1] 李红莉[1] 姚永红[1] 

机构地区：[1]陕西工业职业技术学院材料学院,陕西咸阳712000

出　　处：《热加工工艺》2014年第20期211-212,217,共3页Hot Working Technology

基　　金：陕西工业职业技术学院院内资助项目(ZK13-07)

摘　　要：采用宏观分析、金相检验、显微硬度测试及偏光、暗场观察等手段,对45钢滚轮淬火开裂原因进行分析,发现纵向裂纹和带状组织方向一致,带状组织中聚集着较多的非金属夹杂物。结果表明,严重的带状组织及非金属夹杂物聚集分布,是造成45钢滚轮淬火开裂的主要原因。The reasons for quenching cracks of 45 steel used for rolling wheel were analyzed through macroscopic inspection, metallographic examination, micro-hardness testing, polarized light and dark field methods. The directions of the longitude cracks extended with the banding structure which gathered much of non-metallic inclusions. The result show that the cracks in quenched 45 steel used for rolling wheel are caused by the serious banding structure gathering much of non-metallic inclusions.

关 键 词：45钢滚轮 淬火开裂 带状组织 非金属夹杂物 

分 类 号：TG157[金属学及工艺—热处理]