Microstructure and mechanical properties of a gas-tungsten-arc-welded Fe-24Mn-3.5Cr-0.4C high manganese steel pipe using a Fe-22Mn-2.34Ni-0.38C welding wire

Park, Geon-Woo; Park, Minha; Kim, Byung Jun; Shin, Sang‐Wook; Kim, Hyoung Chan; Park, In-Wook; Jeon, Jong Bae

doi:10.1016/j.matchar.2022.112469

Cited by 9 publications

(2 citation statements)

References 41 publications

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“…High manganese austenitic steel for cryogenic application has a fully austenitic structure, and the austenite phase can remain stable during welding thermal cycling [7,8]. This leads to significant differences in the HAZ characteristics of high manganese austenitic steel compared with other steels and alloys such as high-strength low-alloy (HSLA) steels [9], austenitic stainless steels [10], high manganese low-density steels [11], nickel-based superalloys [12,13] and high-entropy alloys [14].…”

Section: Introductionmentioning

confidence: 99%

The Dominant Role of Recrystallization and Grain Growth Behaviors in the Simulated Welding Heat-Affected Zone of High-Mn Steel

Wang,

Peng

et al. 2024

Materials

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Single-pass-welding thermal cycles with different peak temperatures (Tp) were reproduced by a Gleeble 3800 to simulate the heat-affected zone (HAZ) of a Fe-24Mn-4Cr-0.4C-0.3Cu (wt.%) high manganese austenitic steel. Then, the effect of Tp on the microstructure and mechanical properties of the HAZ were investigated. The results indicate that recrystallization and grain growth play dominant roles. Based on this, the HAZ is proposed to categorize into three zones: the recrystallization heat-affected zone (RHAZ) with a Tp of 700~900 °C, the transition heat-affected zone (THAZ) with a Tp of 900~1000 °C, and the coarse grain heat-affected zone (CGHAZ) with a Tp of 1000~1300 °C. The recrystallization fraction was 29~44% in the RHAZ, rapidly increased to 87% in the THAZ, and exceeded 95% in the CGHAZ. The average grain size was 17~19 μm in the RHAZ, slightly increased to 22 μm in the THAZ, and ultimately increased to 37 μm in the CGHAZ. The yield strength in the RHAZ and THAZ was consistent with the change in recrystallization fraction, while in the CGHAZ, it satisfied the Hall–Petch relationship with grain size. In addition, compared with the base material, the Charpy impact absorbed energy at −196 °C decreased by 22% in the RHAZ, but slightly increased in the CGHAZ. This indicates that the theory of fine grain strengthening and toughening is not entirely applicable to the HAZ of the investigated high-Mn steel.

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Section: Introductionmentioning

confidence: 99%

The Dominant Role of Recrystallization and Grain Growth Behaviors in the Simulated Welding Heat-Affected Zone of High-Mn Steel

Wang,

Peng

et al. 2024

Materials

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“…Limited fossil fuels, the global warming effect induced by carbon emissions, and increasing the level of safety standards have caused a dramatic change in steel technology [1,2]. However, steel is abundant, easy to produce, rigid, and cheaper than non-ferrous metals, making it an inevitably useful material in various industries.…”

Section: Introductionmentioning

confidence: 99%

Single-pulse MIG welded Perform 700 steel joints with various welding parameters

ÖZEN

2023

EMS

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In this work, Perform 700 steel sheets with 5-mm thickness were welded with single pulse MIG welding method with different welding currents and welding speeds. The welded specimens were subjected to tensile tests, hardness measurements and microstructural observations. According to the results, the heat input has an important role in tensile strength of the joint. The maximum tensile strength was obtained as 594.75 MPa at 140A welding current and 450 mm/min welding speed. The tensile specimens were always separated between fusion zone and heat affected zone. The heat affected zones have exhibited tempered martensitic structure. The tempering effect have increased the sizes of the martensitic structure; therefore, the hardness was considerably increased. However, the fusion zone, which was consisted of bainitic structure inside the ferrite matrix, was exhibited soft and ductile behavior. The boundary of soft fusion zone and hard heat affected zone formed the weakest point through the joint.

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Influence of welding position and dilution on mechanical properties and strengthening design of flux cored arc weld metal for high manganese steels

Park,

Won,

Yoo

et al. 2024

Int J Adv Manuf Technol

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Microstructure and mechanical properties of a gas-tungsten-arc-welded Fe-24Mn-3.5Cr-0.4C high manganese steel pipe using a Fe-22Mn-2.34Ni-0.38C welding wire

Cited by 9 publications

References 41 publications

The Dominant Role of Recrystallization and Grain Growth Behaviors in the Simulated Welding Heat-Affected Zone of High-Mn Steel

The Dominant Role of Recrystallization and Grain Growth Behaviors in the Simulated Welding Heat-Affected Zone of High-Mn Steel

Single-pulse MIG welded Perform 700 steel joints with various welding parameters

Influence of welding position and dilution on mechanical properties and strengthening design of flux cored arc weld metal for high manganese steels

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