压力容器2024，Vol.41Issue(3)：17-23,29,8.DOI:10.3969/j.issn.1001-4837.2024.03.003
04Cr13Ni5Mo/20MnMoNb异种钢焊接接头微观组织及性能研究
Microstructure and properties of welded joint of 04Cr13Ni5Mo/20MnMoNb dissimilar metals
王有银 1武靖伟 2王植民 3王杰 1厚喜荣 1王志刚 1张建晓 1车文斌1
作者信息
- 1. 兰州兰石重型装备股份有限公司,兰州 730314
- 2. 中国科学院兰州化学物理研究所 固体润滑国家重点实验室,兰州 730000
- 3. 青岛兰石重型机械设备有限公司,山东青岛 266426
- 折叠
摘要
Abstract
In order to improve the welding efficiency and welding mechanism of 04Cr13Ni5Mo super martensitic stainless steel and 20MnMoNb high-strength steel,manual tungsten inert gas arc welding(TIG)+electrode arc welding(SMAW)was used to weld two different materials of the same thickness.The microstructure and mechanical properties of the welded joint of 04Cr13Ni5Mo/20MnMoNb dissimilar metals were studied using metallographic microscopy,scanning electron microscopy,energy dispersive spectroscopy,X-ray analyzer,and hardness tester.The results show that TIG+SMAW welding can effectively bond 04Cr13Ni5Mo and 20MnMoNb dissimilar steels;The microstructure of the weld seam area is γ growing from the bottom perpendicular to the fusion line,the contents of Ni,Cr,Mo,and Fe show a clear gradient distribution from 04Cr13Ni5Mo to 20MnMoNb;The tensile strength of the joint is slightly lower than that of the base metal on both sides,reaching 92%of the 04Cr13Ni5Mo super martensitic stainless steel and 98.2%of the 20MnMoNb base metal.The fracture type is a mixture of cleavage fracture and ductile fracture;The hardness of the weld area is higher than that of the base metal on both sides,and the impact absorption energy ranges from 76.3 J to 84.9 J.This study lays a certain foundation for the promotion and application of TIG+SMAW combination welding in the field of super martensite and high-strength steel welding.关键词
04Cr13Ni5Mo/20MnMoNb异种钢/TIG+SMAW焊接/微观组织/力学性能Key words
04Cr13Ni5Mo/20MnMoNb dissimilar metal/TIG+SMAW welding/microstructure/mechanical properties分类
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王有银,武靖伟,王植民,王杰,厚喜荣,王志刚,张建晓,车文斌..04Cr13Ni5Mo/20MnMoNb异种钢焊接接头微观组织及性能研究[J].压力容器,2024,41(3):17-23,29,8.
