焊管2024，Vol.47Issue(5)：18-25,8.DOI:10.19291/j.cnki.1001-3938.2024.05.003
热处理对N06200镍基合金与S32168不锈钢焊接接头组织与性能的影响
Effect of Heat Treatment on Microstructure and Properties of Welded Joint of N06200 Nickel-based Alloy and S32168 Stainless Steel
武靖伟 1王植民 2王志刚 1孔凡红 2李彦青 1胡广岐 1王洋1
作者信息
- 1. 兰州兰石重型装备股份有限公司,兰州 730314
- 2. 青岛兰石重型机械设备有限公司,山东 青岛 266426
- 折叠
摘要
Abstract
N06200 nickel-based alloy with thickness of 6 mm and S32168 stainless steel manual TIG welding joints with three heat treatment processes are analyzed and compared by microstructure,mechanical properties,fracture morphology and corrosion properties.The results show that the TIG welded joint of N06200 nickel-based alloy and S32168 stainless steel is composed of equiaxed austenite and dendrite growing perpendicular to the fusion line.The maximum tensile strength of the welded joint after heat treatment at 1 050℃is 736 MPa,which is close to the strength of N06200 base metal,and 9.05%higher than that of the welded joint without heat treatment(675 MPa).The welded joints without heat treatment and with 1 050℃heat treatment are both ductile fracture,the fracture mode of the welded joints with 1 050℃heat treatment is mixed ductile and brittle fracture,and the hardness of the weld area is higher than that of other areas.The IMCs near the N06200 nickel-based alloy side are NiFe and Ni2Cr,and the IMCs near the S32168 stainless steel side are composed of FeCr and Ni3Fe.The main texture of the grains in NiFe phase is<011>fiber texture,and the orientation of the grains in Ni3Fe phase is more obvious,which is<111>fiber texture.关键词
热处理/N06200镍基合金/S32168不锈钢/TIG焊接Key words
heat treatment/N06200 nickel-based alloy/S32168 stainless steel/TIG welding分类
矿业与冶金引用本文复制引用
武靖伟,王植民,王志刚,孔凡红,李彦青,胡广岐,王洋..热处理对N06200镍基合金与S32168不锈钢焊接接头组织与性能的影响[J].焊管,2024,47(5):18-25,8.
