双相不锈钢钢管埋弧焊焊接接头微观组织和力学性能.pdf

维普资讯
学兔兔
2008年第 37卷 7月第 4期石油化工设备
PETRO CHEMICAI EQUIPM ENT July 2008
文章编号:1000—7466(2008)04—0004—04
双相不锈钢钢管埋弧焊焊接接头
微观组织及力学性能
包晔峰,宋晓科, 张孺洪。,周
(,江苏常州 213022; ’
,江苏镇江 212003;
,广东湛江 524057;
,上海 200032)
摘要:采用钨极氩弧焊打底、埋弧焊填充的焊接工艺,对2205双相不锈钢钢管焊接接头的金相组
织及力学性能进行了试验和分析。结果表明,选用适当的焊丝并控制热输入和层间温度,2205双
相不锈钢具有良好的可焊性,焊接所得焊接接头金相组织为铁素体+奥氏体双相组织,其各项力学
性能均符合要求。
关键词:双相不锈钢;埋弧焊;微观组织;力学性能
中图分类号:TG 407;TG 文献标志码:A
M icrostructure and Mechanical Properties of Submerged—arc Welded
2205 Duplex Stainless Steel Pipes
BAO Ye-feng~, SoN G Xiao-ke ~, ZHANG Ru—hong3,ZHO U Yun
( of Electrical and Mechanical Engineering, H ohal University, Changzhou 213022,
China; Laboratory Advancedfor Welding TechnologyProvincial Jiangsu in
Scienceand Technology University,Zhe~iang 212003,China;
pany Westen of South China Sea Oi1,Zha~iang 524057,China;
Office of SAF, Shanghai 200032, China)
A bstract:Owning austenitic stainless steel and stainless ferritic steel advantages,duplex stain—
less steel developed very rapidly as weldable tungsten arc welding (GTAW ) back—
ing,submerged arc welding(SAW )filling covered welding technology was used to weld the 2205
duplex steel,andstainless welding microstructure,mechanicaljoints propert