Microstructure and mechanical properties of gas metal arc welded CoCrFeMnNi joints using a 308 stainless steel filler metal

Shen, Jiajia; Gonçalves, R. M.; Choi, Yeon Taek; Lopes, José Gabriel Pereira; Jin, Yang; Schell, Norbert; Kim, Hyoung Seop; Oliveira, J.P.

doi:10.1016/j.scriptamat.2022.115053

Cited by 85 publications

(10 citation statements)

References 27 publications

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“…In arc-based process, the electron movements between electrodes plays a key role in the arc energy release. [19][20][21] Ultimately, the released arc energy in the arc discharge process increased by the rise of applied voltages. The black line in Figure 6 shows the variation of arc discharge distance along with applied voltage.…”

Section: Resultsmentioning

confidence: 99%

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Arc Erosion Properties of WCu Material Reinforced with Ti₃SiC₂under Different Applied Voltages

et al. 2023

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Introducing reinforcements is a crucial way to modify WCu electric contacts. Herein, the arc erosion performances of WCu/Ti3SiC2 under various direct current voltages are investigated. The eroded microstructures are observed by a 3D laser scanning confocal microscopy and a thermal field emission scanning electron microscope. Compositions of the eroded surfaces are analyzed by a Raman spectroscopy. With the elevated voltages, values of breakdown current, arc duration, arc energy, and arc discharge distance increase, while the breakdown strength decreases. Meanwhile, the eroded regions gradually change from circular shape to irregularly curved corrugations under the elevated voltages. Copper and Ti3SiC2 can disperse arc during arc discharge, and the liquid and gas generated by the two phases can make differences in protecting WCu/Ti3SiC2.

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Section: Resultsmentioning

confidence: 99%

“…In arc‐based process, the electron movements between electrodes plays a key role in the arc energy release. [ 19–21 ] Ultimately, the released arc energy in the arc discharge process increased by the rise of applied voltages.…”

Section: Resultsmentioning

confidence: 99%

Arc Erosion Properties of WCu Material Reinforced with Ti₃SiC₂under Different Applied Voltages

et al. 2023

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“…Performing an insightful microstructural analysis on welded joints, especially on MPEAs can help to explain their behavior and performance and is known to be an important asset when aiming at improving their characteristics for any purpose. [20,21,43,44] Therefore, after evaluating the joint's microstructure, one must address the resulting mechanical properties not only to determine their suitability for the targeted applications but also to determine microstructure/properties relationships.…”

Section: Mechanical Properties Of the Welded Jointsmentioning

confidence: 99%

Impact of Arc‐Based Welding on the Microstructure Evolution and Mechanical Properties in Newly Developed Cr_29.7Co_29.7Ni_35.4Al₄Ti_1.2 Multi‐Principal Element Alloy

et al. 2023

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Multi‐principal element alloys (MPEAs) have been subjected to extensive research due to their promising potential for numerous applications. Up to now, most of the existing research has been focused on unraveling the microstructural evolution and describing the exceptional performance of these alloys when exposed to demanding environments. Nevertheless, it is especially important to understand their processability so that these advanced engineering alloys can be considered for real‐life applications where conventional manufacturing processes, such as welding, are widely used. Herein, gas tungsten arc welding (GTAW) is used for similar welding of a recently developed precipitation‐hardened Cr29.7Co29.7Ni35.4Al4Ti1.2 MPEA. The microstructural evolution and resulting mechanical properties are characterized by combining optical and electron microscopy, synchrotron X‐ray diffraction, microhardness mapping, and tensile testing. The different microstructure features across the welded joint are correlated to the weld thermal cycle and resulting local mechanical properties. Overall, the Cr29.7Co29.7Ni35.4Al4Ti1.2 MPEA exhibits excellent weldability and mechanical properties, reaching a tensile strength of ≈750 MPa and a fracture strain of ≈33% during tensile tests, making this alloy viable for structural applications. The innovative aspect of this work includes the expansion of the current understanding on the physical metallurgy of MPEAs, as well as the examination of this particular MPEA's processability.

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“…Improving the efficiency and quality of thick-plate welding has always been an emphasis of welding experiments [ 1 , 2 , 3 ]. Large grooves are required for thick plates in traditional welding methods, which leads to an increase in the filling quantity of welding wire and consequently to an increase in cost.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics of Plasma in Ultrasonic-Assisted Narrow-Gap Laser Welding with Filler Wire

Ren

Kan

et al. 2023

Materials

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Laser welding with filler wire was applied to Q345D in a narrow gap under ultrasonic assistance, and the dynamic characteristics of plasma were studied by high-speed imaging and spectral acquisition. The results showed that the plasma area decreased gradually with increasing distance between the ultrasonic loading position and welding seam. The electron density and temperature of the plasma with ultrasonic assistance were higher than those without ultrasound. The electron density was approximately 1016~1017 cm−3, and the plasma temperature was approximately 4000~6000 K. Ultrasonic assisted laser wire filling welding can bring about cavitation effect and significantly reduce the porosity problem.

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Microstructure and mechanical properties of gas metal arc welded CoCrFeMnNi joints using a 308 stainless steel filler metal

Cited by 85 publications

References 27 publications

Arc Erosion Properties of WCu Material Reinforced with Ti₃SiC₂under Different Applied Voltages

Arc Erosion Properties of WCu Material Reinforced with Ti₃SiC₂under Different Applied Voltages

Impact of Arc‐Based Welding on the Microstructure Evolution and Mechanical Properties in Newly Developed Cr_29.7Co_29.7Ni_35.4Al₄Ti_1.2 Multi‐Principal Element Alloy

Dynamic Characteristics of Plasma in Ultrasonic-Assisted Narrow-Gap Laser Welding with Filler Wire

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Microstructure and mechanical properties of gas metal arc welded CoCrFeMnNi joints using a 308 stainless steel filler metal

Cited by 85 publications

References 27 publications

Arc Erosion Properties of WCu Material Reinforced with Ti3SiC2under Different Applied Voltages

Arc Erosion Properties of WCu Material Reinforced with Ti3SiC2under Different Applied Voltages

Impact of Arc‐Based Welding on the Microstructure Evolution and Mechanical Properties in Newly Developed Cr29.7Co29.7Ni35.4Al4Ti1.2 Multi‐Principal Element Alloy

Dynamic Characteristics of Plasma in Ultrasonic-Assisted Narrow-Gap Laser Welding with Filler Wire

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Arc Erosion Properties of WCu Material Reinforced with Ti₃SiC₂under Different Applied Voltages

Arc Erosion Properties of WCu Material Reinforced with Ti₃SiC₂under Different Applied Voltages

Impact of Arc‐Based Welding on the Microstructure Evolution and Mechanical Properties in Newly Developed Cr_29.7Co_29.7Ni_35.4Al₄Ti_1.2 Multi‐Principal Element Alloy