焊管2025，Vol.48Issue(9)：27-34,8.DOI:10.19291/j.cnki.1001-3938.2025.09.005
Inconel 825/310S不锈钢Arc Tig和等离子弧焊接接头性能对比研究
Comparative Study on Properties of Arc Tig and Plasma Welded Joints of Inconel 825/310S Stainless Steel
摘要
Abstract
Aiming at the welding application of nickel-based alloys and stainless steels,the 6 mm thickness Inconel 825/310S stainless steel test plates were welded using the Arc Tig technology.The microstructure and mechanical properties of the welded joints were analyzed and compared with plasma welded joints.The results indicate that both welding methods produced defect-free joints with well-formed structures.The microstructure of the weld zone consists primarily of dendritic Fe-Ni-Cr-based solid solutions with minor Ti(C,N)precipitates.The heat-affected zone widths for both methods are comparable,and the grains'growth are similar.The tensile strength of the Arc Tig welded joints reached 567 MPa,consistent with plasma welded joints.The tensile test samples of two welding methods fractured at the weld zone and had good plasticity and bending properties.The hardness of the Arc Tig weld zone ranged from 145HV0.2 to 170HV0.2,similar to that of the plasma weld zone,while the HAZ hardness is lower than that of the base metal.Based on the comprehensive analysis of microstructure and properties,Arc Tig technology can effectively weld 6 mm thickness Inconel 825/310S stainless steel,can be used for actual production.关键词
Arc Tig/镍基合金/不锈钢/微观组织/力学性能Key words
Arc Tig/nickel-based alloy/stainless steel/microstructure/mechanical property分类
矿业与冶金引用本文复制引用
宋红兵,张万鹏,谢航,张文韬,姚张富博,李振岗,张建勋..Inconel 825/310S不锈钢Arc Tig和等离子弧焊接接头性能对比研究[J].焊管,2025,48(9):27-34,8.基金项目
中国石油集团公司关键核心技术攻关项目"井下大功率电加热器研制"(项目编号2024ZG23). （项目编号2024ZG23）
