低合金高强度钢Q345E侧边开裂原因分析  

The Analysis of Crack on the Edge of Low Alloy High Strength Steel Q345E

作　　者：李力[1] 厚健龙[1] 李娜[1] 

机构地区：[1]安阳钢铁股份有限公司,河南安阳455004

出　　处：《物理测试》2010年第6期50-52,共3页Physics Examination and Testing

摘　　要：本文针对低合金高强度钢Q345E侧边开裂,采用化学成分分析、力学性能测试、金相检验及硬度检测等方法进行研究。结果表明:侧边开裂主要原因为钢板局部过冷产生马氏体,经冷矫受力后造成裂开。A few kinds of methods were taken to aim at the crack on the edge of low alloy high strength steel Q345E.And these methods cover chemical analysis,mechanical properties test,metallographic test and hardness test etc.The test result shows that the main reason of edge crack is that part of plate is so cold to produce Martensite,then crack after been forced by cold leveler.

关 键 词：开裂 马氏体 应力 

分 类 号：TG142.15[一般工业技术—材料科学与工程]