Microstructure, mechanical properties, and corrosion resistance of dissimilar weld joints between SS304 and Inconel 600 welded using gas tungsten arc welding

被引：5

作者：

Salarvand, V. ^{[1
]}

Ahmadian, F. ^{[1
]}

Torabpour, M. ^{[1
]}

Esmaeilzadeh, M. ^{[2
]}

Abidi, M. H. ^{[3
]}

Mehrabi, O. ^{[4
]}

Sohrabpoor, H. ^{[5
]}

Mostafaei, A. ^{[6
]}

Brabazon, D. ^{[7
,8
]}

机构：

[1] Imam Khomeini Int Univ, Fac Engn, Dept Mat Sci & Engn, Qazvin, Iran

[2] Babol Noshirvani Univ Technol, Dept Mat Sci & Engn, Babol, Iran

[3] Imam Khomeini Int Univ, Fac Engn, Dept Mech Engn, Qazvin, Iran

[4] Esfarayen Univ Technol, Dept Mech Engn, Esfarayen, North Khorasan, Iran

[5] Indiana Univ Bloomington, Luddy Sch Informat Comp & Engn, Dept Intelligent Syst Engn, Bloomington, IN 47408 USA

[6] IIT, Dept Mech Mat & Aerosp Engn, 10W32 nd St, Chicago, IL 60616 USA

[7] Dublin City Univ, Adv Mfg Res Ctr, Sch Mech & Mfg Engn, I Form, Dublin, Ireland

[8] Dublin City Univ, Adv Proc Technol Res Ctr, Sch Mech & Mfg Engn, Dublin, Ireland

来源：

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2024年 / 212卷

关键词：

Dissimilar metal welding; Stainless steel 304; Inconel; 600; Microstructure observations; Mechanical properties; Corrosion resistance; STAINLESS-STEEL; INTERGRANULAR CORROSION; SUSCEPTIBILITY; STRESS;

D O I：

10.1016/j.ijpvp.2024.105356

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure, mechanical characteristics, and corrosion resistance of dissimilar gas tungsten arc welding (GTAW) joints of 304 stainless steel (SS304) to Inconel 600 (IN600) with Inconel 600, using ERNiCr-3 and ERSS308 filler metals were investigated. The welding process was executed at a current of 110 Amps under argon shielding gas, and all fabricated welds successfully joined SS304 to Inconel 600 without visible cracks or porosity at the weld metal interface. Microstructural analysis with optical and scanning electron microscopy revealed a mix of columnar and equiaxed dendritic structures in the weld zone for all samples. An unmixed zone was noted at the interface on the SS304 side when welded with Inconel 600 and ERNiCr-3, attributed to the differing melting points and chemical compositions of these fillers compared to SS304. The presence of Nb and Ti in the ERNiCr-3 filler facilitated the formation of TiC and NbC carbides in the welded metal structure, resulting in higher hardness compared to other specimens. Mechanically, the ERNiCr-3 welded sample exhibited superior hardness, with the highest microhardness values recorded in the ERNiCr-3 weld metal (197-207 HV) and higher values on the SS304 side (176-194 HV) compared to the IN600 side (164-176 HV). Corrosion tests, including Tafel and Electrochemical Impedance Spectroscopy, indicated that the ERNiCr-3 weld metal had better corrosion resistance than the IN600 weld metal. Due to the differences in chemical compositions of the base metals SS304 and IN600, it is necessary to consider an appropriate filler for welding these materials. ERNiCr-3 demonstrated increased hardness due to the formation of TiC and NbC carbides, along with enhanced corrosion resistance. These properties make it a promising material for industrial applications that require durability, strength, and resistance to corrosion, particularly in high-temperature or corrosive environments.

引用

页数：11

共 42 条

[1] An assessment of microstructure and mechanical properties of inconel 601/304 stainless steel dissimilar weld [J].