基于正交设计的X100管线钢焊接接头工艺性能
Technological Property of X100 Pipeline Steel Welded Joints Based on Orthogonal Design
张敏 1杨亮 1李继红1
作者信息
- 1. 西安理工大学材料科学与工程学院,陕西西安710048
- 折叠
摘要
以优化焊接工艺性为出发点,建立Al2O3、TiO2、ZrO2、SiO2为因素的正交试验,并利用光学显微镜、拉伸-冲击材料试验机对X100管线钢焊缝组织与力学性能进行了研究.结果表明,在质量分数为Al2O310％,TiO26％,ZrO27％,SiO2 20％时焊接工艺值最高,焊缝主要显微组织为针状铁素体和粒状贝氏体,熔敷金属最高抗拉强度达781.4MPa,为母材的93.3％,冲击功(-20℃)均大于90J.
Abstract
In order to optimize the technological property of welding,the orthogonal test was arranged with Al2O3,TiO2,ZrO2 and SiO2 as four factors.Using an optical microscope and the impact-tensile materials testing machine,the microstructure and mechanical property of X100 pipeline steel weld were investigated.The results show that,when the mass fraction of Al2O3 is 10％,TiO2 of 6％,ZrO2 of 7％,SiO2 of 20％,the technological value is highest.The weld microstructure is composed of acicular ferrite and granular bainite.The maximum tensile strength of deposited metals gets to 781.4 MPa,which is about 93.3％ of the base materials,and impact energy are greater than 90 J at-20℃.
关键词
X100管线钢/正交设计/工艺性能/焊缝组织Key words
X100 pipeline steel/orthogonal design/technological property/weld microstructure引用本文复制引用
基金项目
出版年
2013
NETL
NSTL
维普
万方数据