Study of microstructure &amp; mechanical properties of TIG welded aluminized 9Cr-1Mo steel

Zala, Arunsinh; Jamnapara, N.I.; Sasmal, C.S.; Sam, Shiju; Ranjan, Mukesh

doi:10.1016/j.fusengdes.2022.113038

Cited by 6 publications

(3 citation statements)

References 53 publications

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“…The peak intensity at 44.675° confirmed the phases as α-Fe, Cr 23 C 6 , and VC, the peak intensity at 65.026° confirmed the phases as α-Fe, Cr 23 C 6 , and VN, and the peak intensity at 65.026° confirmed the phases as α-Fe, Cr 23 C 6 , VC and NbN. Similar results were described by Zala et al 28 , who confirmed that the weld microstructure α-Fe phase of 9Cr-1Mo steel had three main peaks, similar to the base material. Saini et al 29 determined by XRD analysis that P92 steel precipitates as Fe-rich Fe 3 C, Nb-and V-rich MX particles, and Cr-rich Cr 23 C 6 , after creeping for 720h, the W-rich Fe 2 W (Laves phase) was observed.…”

Section: Eds and Xrd Analysissupporting

confidence: 88%

Microstructure and Mechanical Properties of Thick 08Cr9W3Co3VNbCuBN Heat-Resistant Steel welded Joint by TIP TIG Welding

et al. 2023

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In this paper, the multi-layer multi-pass welding process was used to weld 115mm 08Cr9W3Co3VNbCuBN (G115) steel pipe, the gas tungsten arc welding (GTAW) was used in root pass welding, subsequent welding by dynamic hot wire gas tungsten arc welding (TIP TIG) welding method, while the post-weld heat treatment (PWHT) of 770°C × 10h was carried out afterward. The microstructure and mechanical properties of different zones of the welded joint were analyzed by OM, SEM, XRD, microhardness and impact tests. The results showed that the ferrite and martensite were observed in the weld metal (WM), the fine-grained heat-affected zone (FGHAZ) and the coarse-grained heat-affected zone (CGHAZ) consisting of prior austenitic grain boundaries (PAGBs) and martensite, and more precipitates including coarse M 23 C 6 carbides with fine MX-type carbonitrides were observed inside the grain boundaries and grains. The hardness distribution patterns along different locations (Cover, Fill, Root) on the welded joint cross-section were the same, from base metal (BM) to WM hardness gradually increased, and WM hardness was the highest. WM impact toughness was worse than HAZ, impact fracture mode was a mixed tough-brittle fracture but biased towards brittle fracture.

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Section: Eds and Xrd Analysissupporting

confidence: 88%

Microstructure and Mechanical Properties of Thick 08Cr9W3Co3VNbCuBN Heat-Resistant Steel welded Joint by TIP TIG Welding

et al. 2023

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“…Then the interaction plots and mean effects plots were successfully developed to improve the performances of process parameters. (7) The ANOVA proves that the welding speed is the most influencing parameter than the other TIG welding parameters. The corresponding F value (0.09) of welding speed is less than other parameter values.…”

Section: Discussionmentioning

confidence: 90%

“…TIG welding was initiated in 1942 by the scientist Russel; many researchers developed welding into the aluminum-based magnesium alloy [6]. Formerly, this type of material joint was difficult to weld during the TIG process [7]. Nonferrous and ferrous materials are frequently joined together by TIG process [8].…”

Section: Introductionmentioning

confidence: 99%

Analytical and Neural Network Analysis on Flux-Coated Aluminium Alloy by Activated TIG Welding with Synthesized Nanocomposites

Raja¹,

Kumar

Kumari

et al. 2023

Journal of Nanomaterials

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This research focused to synthesize the material by the tungsten inert gas (TIG) welding process with support of appropriate flux coating material. Therefore the required amount of flux coating material was utilized to enhance the mechanical properties of the specified localized welded regions. Hence, this study concentrated to select the nano-SiO2 flux particles that were employed for TIG process. This activated TIG welding composes the flux-coated welding on the base metal of AA5083-H111, as this material was highly reactive with SiO2 by the presence of magnesium precipitates and well synthesized after the welding. The post- and preheat treatment process was achieved before and after welding. The selection of activated TIG process parameters composed of strengthened weld specimens along with constant parameters like electrode tip angle and flow rate, respectively. Initially, the process parameters were designed by the statistical analysis of Box Behnken method with support of regression formulation to determine the optimal solution. The maximum tensile strength was attained at the welding process parameters of welding speed (100 mm/min), voltage (13 V), and current (125 amps). The higher hardness was achieved at the process parameters of welding speed (80 mm/min), voltage (12 V), and current (125 amps), respectively. Finally, the neural network approach was utilized to verify the predicted responses of tensile and microhardness properties. The interaction plots, mean plots, and 3D scatter plots were influenced to enhance the process parameters. In this research, mechanical properties were enhanced by the flux-coated SiO2 and the analytical method also advances the optimal parameters.

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Simulation and Comparative Analysis of Welding of the Safety End of the Pipe Based on Different Body Heat Source Models

Chen,

2024

Lecture Notes in Mechanical Engineering

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Based on ANSYS APDL, this paper simulates the welding process of the safety end of the pipe using different heat source models. The results show that the shape of the moving heat source under the body heat rate heat source model and the double ellipsoid heat source model is ellipsoidal shape. The body heat rate heat source has a larger high temperature area than the double ellipsoidal heat source. The variation law of temperature field and stress field is basically the same, but the overall stress field under double ellipsoid heat source load is about 20 MPa smaller than the total stress field under body heating rate. The comparison of different heat source models can provide some help for the numerical simulation of welding.

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Study of microstructure & mechanical properties of TIG welded aluminized 9Cr-1Mo steel

Cited by 6 publications

References 53 publications

Microstructure and Mechanical Properties of Thick 08Cr9W3Co3VNbCuBN Heat-Resistant Steel welded Joint by TIP TIG Welding

Microstructure and Mechanical Properties of Thick 08Cr9W3Co3VNbCuBN Heat-Resistant Steel welded Joint by TIP TIG Welding

Analytical and Neural Network Analysis on Flux-Coated Aluminium Alloy by Activated TIG Welding with Synthesized Nanocomposites

Simulation and Comparative Analysis of Welding of the Safety End of the Pipe Based on Different Body Heat Source Models

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