稀土对低合金高强度结构钢Q345E疲劳性能的影响  

Effects of Rare Earth on Fatigue Property of Low-alloy High-tensile Structural Steel Q345E

作　　者：张凤明[1,2] 魏淼 Zhang Feng-ming;Wei Miao(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Inner Mongolia Enterprise Key Laboratory of Rare Earth Steel Products Research&Development,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]内蒙古自治区稀土钢产品研发企业重点实验室,内蒙古包头014010

出　　处：《包钢科技》2019年第6期55-58,74,共5页Science & Technology of Baotou Steel

摘　　要：文章对比分析了稀土元素对低合金高强度结构钢Q345E焊接接头力学性能及金相组织的影响,从稀土元素对Q345E的晶粒度和夹杂物控制方面分析了稀土对母材及焊缝疲劳性能的影响。In the paper,the effects of rare earth elements on the mechanical properties and metallographic structure of welded joints of low-alloy high-tensile structural steel Q345E are compared and analyzed.The effects of rare earth on fatigue property of base metal and welded joint are analyzed from the control of grain size and inclusion of Q345E steel by rare earth elements.

关 键 词：稀土 Q345E 焊接性能 疲劳强度 

分 类 号：TG131[一般工业技术—材料科学与工程]