MAG Welding Process with Micro-Jet Cooling as the Effective Method for Manufacturing Joints for S700MC Steel

Węgrzyn, Tomasz; Szymczak, Tadeusz; Szczucka-Lasota, Bożena; Łazarz, B.

doi:10.3390/met11020276

Cited by 10 publications

(5 citation statements)

References 36 publications

(44 reference statements)

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“…They stated that properties of S700MC welded joint are strongly influenced by welding parameters. Węgrzyn et al [44] proved that increased cooling rate does not significantly decrease the properties of S700MC welded joints. It suggests that investigated steel could be tested in water environment in high-cooling rate conditions.…”

Section: Introductionmentioning

confidence: 99%

Bead-on-Plate Underwater Wet Welding on S700MC Steel

Tomków¹,

Świerczyńska²,

Landowski³

et al. 2021

Adv. Sci. Technol. Res. J.

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The participation of high strength steels in marine and offshore structures is increasing, which makes it necessary to develop recommendations for underwater repair welding works. The article presents the results of bead-on-plate welded specimens made of S700MC high strength steel in underwater wet welding conditions by covered electrodes. Three specimens with heat input values in the range 0.91-1.05 kJ/mm were made. The specimens were subjected to visual, metallographic, macro-and microscopic tests as well as hardness measurements using the Vickers method. It was found that the higher heat input leads to formation of mixed bainite-martensite microstructure in the heat-affected zone (HAZ). Lower heat input value results in presence of martensite in HAZ. It was shown that in the scope of the performed tests, the maximum hardness of HAZ did not exceed the critical value for the material group, and the increase in heat input caused the decrease of hardness by about 25 HV10 to a level 250-260 HV10.

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Section: Introductionmentioning

confidence: 99%

Bead-on-Plate Underwater Wet Welding on S700MC Steel

Tomków¹,

Świerczyńska²,

Landowski³

et al. 2021

Adv. Sci. Technol. Res. J.

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“…Moreover, in the case of the last connection methods, the sub-components used for the joining have certificates, while the quality of the first one depends on the qualifications of the welding group. This problem is considered by a lot of research teams [ 9 , 14 ], which examined parameters of the joining technique or modified ones applying additional sub-elements such as micro-jet cooling device [ 15 , 16 ] or hybrid welding process [ 17 , 18 ]. These efforts are transferred for various kinds of high-strength steel focusing on the S960MC [ 15 , 17 , 18 ], which is an attractive kind of metal because it is produced in a lot of forms such as sheets, tubes and plates [ 1 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Behavior of Weld to S960MC High Strength Steel from Joining Process at Micro-Jet Cooling with Critical Parameters under Static and Fatigue Loading

et al. 2021

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The paper is focused on testing the weld of the S960MC steel produced at the micro-jet cooling under static and fatigue loading at critical parameters. This kind of material was in the form of a sheet with a thickness equal to 2 mm. The joint was obtained using three different types of welding wires: EDFK 1000, Union NiMoCr and Union X96 at the same parameters of the process. The joints were examined using non-destructive and destructive tests. The results from non-destructive experiments enable us to assess the quality of the welds directly before the joining process. In contrast, the destructive one allows following welds behavior under different loading conditions with their critical parameters. The bending experiments confirmed the good plastic properties of the weld, expressed by no cracks in the region tested in many variants of the joint manufactured. The results from static tests indicated a significant reduction of mechanical parameters of the weld in comparison to the base metal, expressed by 50% differences. Fatigue data have enabled us to follow the welding behavior at the increasing amplitude of axial stress up to fracture at constant amplitude value covering the following values of stress 650 MPa–100 MPa. Variations of total energy are presented at different values of several cycles up to fracture. Fracture regions are collected for analysis of the joint region features under cyclic loading. They have indicated differences in weld cracking depended on the stress level. Finally, the Wöhler S-N curve of the weld was determined, indicating the value of the fatigue limit of the weld tested, i.e., 100 MPa. The weld at the Union NiMoCr welding wire was indicated as the joint having the highest resistance on static and fatigue loadings.

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“…XPF800 st weld and BM have a ductile fracture, with multiple dimples and rip ridges. Wegrzyn et al [137] studied the MAG welding process coupled with micro-jet co ing on S700MC steel. Such joints were reported for the first time and the authors carefu investigated the mechanical properties.…”

Section: Failure Mechanism Of Ahss After Weldingmentioning

confidence: 99%

“…It gives an overall understanding of th influence on the weld microstructure and mechanical properties. Many research inves Wegrzyn et al [137] studied the MAG welding process coupled with micro-jet cooling on S700MC steel. Such joints were reported for the first time and the authors carefully investigated the mechanical properties.…”

Section: Advantages Disadvantages and Future Directions Of Ahssmentioning

confidence: 99%

Advanced High-Strength Steels for Automotive Applications: Arc and Laser Welding Process, Properties, and Challenges

Perka

John

Kuruveri

et al. 2022

Metals

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In recent years, the demand for advanced high-strength steel (AHSS) has increased to improve the durability and service life of steel structures. The development of these steels involves innovative processing technologies and steel alloy design concepts. Joining these steels is predominantly conducted by following fusion welding techniques, such as gas metal arc welding, tungsten inert gas welding, and laser welding. These fusion welding techniques often lead to a loss of mechanical properties due to the weld thermal cycles in the heat-affected zone (HAZ) and the deposited filler wire chemistry. This review paper elucidates the current studies on the state-of-the-art of weldability on AHSS, with ultimate strength levels above 800 MPa. The effects of alloy designs on the HAZ softening, microstructure evolution, and the mechanical properties of the weld joints corresponding to different welding techniques and filler wire chemistry are discussed. More specifically, the fusion welding techniques used for the welding of AHSS were summarized. This review article gives an insight into the issues while selecting a particular fusion welding technique for the welding of AHSS.

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MAG Welding Process with Micro-Jet Cooling as the Effective Method for Manufacturing Joints for S700MC Steel

Cited by 10 publications

References 36 publications

Bead-on-Plate Underwater Wet Welding on S700MC Steel

Bead-on-Plate Underwater Wet Welding on S700MC Steel

Behavior of Weld to S960MC High Strength Steel from Joining Process at Micro-Jet Cooling with Critical Parameters under Static and Fatigue Loading

Advanced High-Strength Steels for Automotive Applications: Arc and Laser Welding Process, Properties, and Challenges

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