Studying the strengthening mechanisms and mechanical properties of dissimilar laser-welded butt joints of medium-Mn stainless steel and automotive high-strength carbon steel

Hamada, Atef; Ghosh, Sumit; Ali, Mohammed; Jaskari, Matias; Järvenpää, Antti

doi:10.1016/j.msea.2022.143936

Cited by 25 publications

(9 citation statements)

References 54 publications

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“…In recent years, LBW has been utilized for joining ferritic/austenitic dissimilar steels and some researchers have addressed their efforts to butt-joining thin sheets without filler metals: AISI 1010 to AISI 321 in [36], AISI 1010 to AISI 304L in [37], 9Cr-1Mo-V-Nb to 316 L(N) in [38], and S235JR to AISI 316L in [39]. However, in the absence of a filler metal with a composition such as to compensate for the absence of alloying elements in carbon steel, dangerous martensitic microstructures have been observed in the welds, due to carbon diffusion (see references [40,41]), which can be overcome by post-welding heat treatments [42,43].…”

Section: Laser Beam Weldingmentioning

confidence: 99%

“…In [40], Hamada et al performed an autogenous LBW of Docol S355 to AISI 201 medium-Mn stainless steel. The presence of martensitic structures was highlighted in the welds and, therefore, post-welding heat treatment was necessary to homogenize the microstructure, relieve residual stress, and, therefore, improve mechanical performances.…”

Section: Laser Beam Weldingmentioning

confidence: 99%

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A Review on Fusion Welding of Dissimilar Ferritic/Austenitic Steels: Processing and Weld Zone Metallurgy

Giudice,

Missori,

Scolaro

et al. 2024

JMMP

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Dissimilar welds between ferritic and austenitic steels represent a good solution for exploiting the best performance of stainless steels at high and low temperatures and in aggressive environments, while minimizing costs. Therefore, they are widely used in nuclear and petrochemical plants; however, due to the different properties of the steels involved, the welding process can be challenging. Fusion welding can be specifically applied to connect low-carbon or low-alloy steels with high-alloy steels, which have similar melting points. The welding of thick plates can be performed with an electric arc in multiple passes or in a single pass by means of laser beam equipment. Since the microstructure and, consequently, the mechanical properties of the weld are closely related to the composition, the choice of the filler metal and processing parameters, which in turn affect the dilution rate, plays a fundamental role. Numerous technical solutions have been proposed for welding dissimilar steels and much research has developed on welding metallurgy; therefore, this article is aimed at a review of the most recent scientific literature on issues relating to the fusion welding of ferritic/austenitic steels. Two specific sections are dedicated, respectively, to electric arc and laser beam welding; finally, metallurgical issues, related to dilution and thermal field are debated in the discussion section.

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Section: Laser Beam Weldingmentioning

confidence: 99%

Section: Laser Beam Weldingmentioning

confidence: 99%

A Review on Fusion Welding of Dissimilar Ferritic/Austenitic Steels: Processing and Weld Zone Metallurgy

Giudice,

Missori,

Scolaro

et al. 2024

JMMP

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“…Prior research has found that high Ni and Mo content stabilizes austenite during solidification, leading to the formation of austenite [63]. Martensite formation at the interface zone is attributed to factors such as the cooling rate during solidification of the weld pool [64][65][66]. Additionally, the high number of microalloying elements in the chemical composition of H13 steel and the presence of tempered martensite in the substrate (see Figure 8b) lead to the formation of untempered martensite during the rapid cooling of the welding process [67,68].…”

Section: Microstructure and Xrd Measurementsmentioning

confidence: 99%

Evaluation of Austenitic Stainless Steel ER308 Coating on H13 Tool Steel by Robotic GMAW Process

Hernandez-Flores,

Rodriguez-Vargas,

Stornelli

et al. 2023

Metals

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Within the drilling, petrochemical, construction, and related industries, coatings are used to recover components that failed during service or to prevent potential failures. Due to high stresses, such as wear and corrosion, which the materials are subjected to, industries require the application of coating between dissimilar materials, such as carbon steels and stainless steels, through arc welding processes. In this work, an austenitic stainless steel (ER308) coating was applied to an H13 tool steel substrate using the gas metal arc welding (GMAW) robotic process. The heat input during the process was calculated to establish a relationship between the geometry obtained in the coating and its dilution percentage. Furthermore, the evolution of the microstructure of the coating, interface, and substrate was evaluated using XRD and SEM techniques. Notably, the presence of martensite at the interface was observed. The mechanical behavior of the welded assembly was analyzed through Vickers microhardness, and a pin-on-disk wear test was employed to assess its wear resistance. It was found that the dilution percentage is around 18% at high heat input (0.813 kJ/mm) but decreases to about 14% with reduced heat input. Microhardness tests revealed that at the interface, the maximum value is reached at about 625 HV due to the presence of quenched martensite. Moreover, increasing the heat input favors wear resistance.

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“…A large amount of martensite was observed in the CGHAZ by using low-matching solid wire and the MAG welding method. The results of the hardness tests showed that the hardness of the FGHAZ exceeded that of the fusion zone, and the impact toughness of the weld zone was greatly enhanced relative to the base metal [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of MIG Welds between 6252 Armor Steel and Q550D HSLA Steel

Wang

Zhang

et al. 2022

Materials

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The microstructure and mechanical properties of the welded joints of 6252 armor steel and Q550D high-strength low-alloy (HSLA) steel welded by MIG welding were studied. ER70S-G and ER140S-G were used as fillers to obtain welded joints with good formation and no faults. The joint microstructure (OM) analysis showed that a large Widmanstätten structure was observed at the fusion line on the Q550D side, and the apparent grain sizes changed on the 6252 side. Cylindrical ferrite growth along the bainite grain boundary was observed in the ER70S-G filler weld zone, while the ER140S-G filler weld zone was occupied by lower bainite structures. The XRD phase analysis showed that more Fe-Ni-Cr compounds and less ferrite were formed in the ER140S-G filler weld. The hardness test showed that the hardness of the HAZ on the 6252 side was significantly higher than that of the BM and the WZ, and the welded joint obtained by the ER140S-G filler had a higher hardness. The tensile strength test showed that WZ (>772 MPa) had a higher strength than Q550D BM, and the tensile fracture (SEM) was primarily a ductile fracture. The impact test results showed that the welded joint had better impact resistance at room temperature, but the impact absorption energy of the weld and the heat-affected zone was strongly affected by changes in temperature, and brittle fracture occurred easily at low temperatures.

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Studying the strengthening mechanisms and mechanical properties of dissimilar laser-welded butt joints of medium-Mn stainless steel and automotive high-strength carbon steel

Cited by 25 publications

References 54 publications

A Review on Fusion Welding of Dissimilar Ferritic/Austenitic Steels: Processing and Weld Zone Metallurgy

A Review on Fusion Welding of Dissimilar Ferritic/Austenitic Steels: Processing and Weld Zone Metallurgy

Evaluation of Austenitic Stainless Steel ER308 Coating on H13 Tool Steel by Robotic GMAW Process

Microstructure and Mechanical Properties of MIG Welds between 6252 Armor Steel and Q550D HSLA Steel

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