Restricted accessResearch articleFirst published online 2025-5
Evaluation of microstructure,crystallographic texture,crystal orientation,grain boundary characteristics,and mechanical characteristics of dissimilar joints of ASTM A240 and alloy 625 in different welding techniques for high temperature applications
The current study focuses on the welding of dissimilar joints between ASTM A240 and alloy 625 for high temperature applications, particularly in the manufacturing of CSP storage tanks. Two welding techniques, Double pulse – MIG and Single Pulse -MIG, were utilized. When comparing the two techniques, Double pulse -MIG demonstrated a 65% grain refinement and 30% lower heat input compared to Single pulse – MIG. Double pulse – MIG also showed a reduction of 17.7% in high angle grain boundaries (HAGB). The presence of a strong texture in weld center (WC) was confirmed by a maximum pole intensity of 7.7 in the normal direction (ND) direction. Double pulse – MIG exhibited a higher amount of strong texture in WC compared to Single pulse – MIG. Additionally, Double pulse – MIG resulted in a 75 MPa reduction in residual stress compared to Single pulse – MIG. Due to its ability to produce finer grains, Double pulse – MIG exhibited superior mechanical properties and higher tensile strength. Overall, the research highlights the advantageous mechanical properties of Double pulse – MIG over Single pulse – MIG welding methods.
WalczakMPinedaFFernándezÁG, et al. Materials corrosion for thermal energy storage systems in concentrated solar power plants. Renew Sustain Energ Rev2018; 86: 22–44.
2.
MortezaieAShamanianM.An assessment of microstructure, mechanical properties and corrosion resistance of dissimilar welds between Inconel 718 and 310S austenitic stainless steel. Int J Press Vessel Piping2014; 116: 37–46.
3.
JulaMDehmolaeiRAlavi ZareeSR.The comparative evaluation of AISI 316/A387-Gr.91 steels dissimilar weld metal produced by CCGTAW and PCGTAW processes. J Manuf Process2018; 36: 272–280.
4.
SujaiSDevendranath RamkumarK.Microstructure and mechanical characterization of Incoloy 925 welds in the as-welded and direct aged conditions. J Mater Eng Perform2019; 28(3): 1563–1580.
5.
ManikandanMArivazhaganNNageswara RaoM, et al. Microstructure and mechanical properties of alloy C-276 weldments fabricated by continuous and pulsed current gas tungsten arc welding techniques. J Manuf Process2014; 16(4): 563–572.
6.
NaffakhHShamanianMAshrafizadehF.Dissimilar welding of AISI 310 austenitic stainless steel to nickel-based alloy Inconel 657. J Mater Process Technol2009; 209(7): 3628–3639.
7.
YanLJamJEBeniMH, et al. Effect of laser welding parameters on the temperature distribution, microstructure and mechanical properties of dissimilar weld joint of Inconel 625 and stainless steel 304. Int Commun Heat Mass Transf2022; 131: 105859.
8.
JoseBManoharanMNatarajanA, et al. Development of a low heat-input welding technique for joining thick plates of 250 grade maraging steel to fabricate rocket motor casings. Mater Lett2022; 326: 132984.
9.
NandhakumarSGokul kumarKArivazhaganN, et al. Technology development of novel autogenous double pulse tungsten insert gas welding technique to evaluate the depth of penetration, micro segregation via machine learning and desirability function approach. Mater Today Commun2024; 40: 109614.
10.
NandhakumarSGokul KumarKJoseB.Development of a novel autogenous double pulse tungsten inert gas welding technique for joining IN625 in concentrated solar power plants. Mater Today Commun2024; 39: 108567.
11.
HuaWSongMLiaoK, et al. A new experimental station for microbeam X-ray scattering at the SSRF BL10U1 beamline. J Appl Crystallogr2024; 57(2): 446–455.
12.
NandhakumarSGokul kumarK.Development of novel welding techniques for dissimilar joining of 12 mm thick plates of AISI347H and IN625 for CSP power plants. Mater Lett2023; 330(4): 133210.
13.
KumarMDBManikandanM. Evaluation of microstructure, residual stress, and mechanical properties in different planes of Wire + arc additive manufactured nickel-based superalloy. Met Mater Int2022; 28(12): 3033–3056.
14.
SathishkumarMManikandanM.Development of pulsed current arc welding to preclude carbide precipitates in Hastelloy X weldment using ernicr-3. J Mater Eng Perform2020; 29(8): 5395–5408.
15.
MathivananASenthilkumarADevakumaranK.Pulsed current and dual pulse gas metal arc welding of grade AISI: 310S austenitic stainless steel. Def Technol2015; 11(3): 269–274.
16.
WuKDingNYinT, et al. Effects of single and double pulses on microstructure and mechanical properties of weld joints during high-power double-wire GMAW. J Manuf Process2018; 35: 728–734.
17.
JiangZChenXLiH, et al. Grain refinement and laser energy distribution during laser oscillating welding of Invar alloy. Mater Design2020; 186: 108195.
18.
NolzeG.Euler angles and crystal symmetry. Cryst Res Technol2015; 50(2): 188–201.
19.
SarkarAYadavSDNageshaA.An EBSD based investigation on the deformation mechanisms under HCF-creep interaction in a Ni-based superalloy (alloy 617M). Mater Sci Eng A2022; 832(6): 142399.
20.
SathishkumarMBhakatYJKumarKG, et al. Investigation of double-pulsed gas metal arc welding technique to preclude carbide precipitates in aerospace grade hastelloy X. J Mater Eng Perform2021; 30(1): 661–684.
21.
LiuCYTongJDJiangMG, et al. Effect of scanning strategy on microstructure and mechanical properties of selective laser melted reduced activation ferritic/martensitic steel. Mater Sci Eng A2019; 766: 138364.
22.
KumarVPJebarajAV.Attainment of favorable microstructure for residual stress reduction through high-temperature heat treatment on additive manufactured inconel 718 alloy. Int J Adv Manuf Technol2022; 121(7–8): 4455–4472.
23.
YaoJLiJZhaoG, et al. Microstructure evolution and mechanical properties of TiC coating over Inconel 625 obtained by vacuum electron beam surface alloying. Metals2023; 13(2): 275.
24.
BibhanshuNGussevMNMasseyCP, et al. Investigation of deformation mechanisms in an advanced FeCrAl alloy using in-situ SEM-EBSD testing. Mater Sci Eng A2022; 832: 142373.
25.
KarmuhilanMKumananS.Location-dependent microstructure analysis and mechanical behavior of inconel 625 using Cold Metal Transfer (CMT) based wire and arc additive manufacturing. Vacuum2023; 207: 111682.
26.
WuXSuoHJiY, et al. Systematical analysis on the grain orientation evolution of pure nickel under plastic deformation by using in-situ EBSD. Mater Sci Eng A2020; 792: 139722.
27.
RoeRJ.Description of crystallite orientation in polycrystalline materials. III. General solution to pole figure inversion.J Appl Phys1965; 36(6): 2024–2031.
28.
WangLLWeiHLXueJX, et al. A pathway to microstructural refinement through double pulsed gas metal arc welding. Scr Mater2017; 134: 61–65.
