Investigations on Hot Cracking of Novel High Manganese TWIP-Steels

Keil, Daniel; Zinke, Manuela; Pries, Helge

doi:10.1007/978-3-642-16864-2_12

Cited by 12 publications

(8 citation statements)

References 6 publications

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“…One of the issues that must be resolved for high manganese steel to be used in LNG applications is weldability evaluation for pipe manufacturing. In this regard, several welding processes on high manganese steel have been investigated, such as RSW (Resistance Spot Welding), GTAW (Gas Tungsten Arc Welding), CLBW (Continuous Laser Beam Welding), PLBW (Pulsed Laser Beam Welding) and FCAW (Flux Cored Arc Welding) [12][13][14][15][16][17][18][19]. Common issues aroused are (1) manganese evaporation may occur during welding due to the high vapor pressure of manganese, (2) manganese segregation and deficiency may occur due to high manganese content.…”

Section: Introductionmentioning

confidence: 99%

“…If the manganese content in the weld zone changes during welding due to the evaporation of manganese, initial phase and deformation mechanism may alter depending on stacking fault energy, which may cause inhomogeneous microstructure and local stress concentration during deformation [12,18,20]. Therefore, it is necessary to minimize the evaporation of manganese or to use filler metals of higher manganese content for compensating the evaporated amount [13,21].…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet

Park

et al. 2019

Metals

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This study investigated microstructure and mechanical properties of high manganese steel sheet fabricated by gas tungsten arc welding (GTAW). The weld zone showed longitudinal coarse grains due to the coalescence of columnar dendrites grown into the direction of heat source, and the HAZ showed equiaxed coarser grains than the base metal due to the thermal effect of GTAW process. Mn segregation occurred in the inter-dendritic regions of the weld zone and Mn depletion thus occurred in the weld matrix. Although the stacking fault energy is expected to be lowered due to the Mn depletion, no noticeable change in the initial phase and deformation mechanism was found in the weld matrix. Lower hardness and strength were shown in the weld zone than the base metal, which was caused by the coarser grain size. The negative strain rate sensitivity observed in the weld zone and the base metal is considered to have originated from the negative strain rate dependency of twinning nucleation stress.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet

Park

et al. 2019

Metals

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“…Due to their metallurgy, many of these steels maintain their one-phase austenitic crystal lattice after forming and heat treatment. In addition the austenitic phase leads to low heat conductivity and high a thermal expansion coefficient of FeMn alloys (see Table 1) which may cause hot cracks (Keil et al, 2011) in the weld metal and distortion of the workpiece after welding . This is the main reason why welding techniques with a low energy input are favorable to other welding techniques.…”

Section: Weldability Of Femn Steelsmentioning

confidence: 99%

Investigations on Laser Beam Welding Dissimilar Material Combinations of Austenitic High Manganese (FeMn) and Ferrite Steels

Behm¹,

Höfemann²,

Hatscher³

et al. 2014

Physics Procedia

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For the past few years the customer's demand for more fuel efficient and at the same time safer vehicles has steadily increased. Consequently, light weight design has become one of the main interests in engineering. With regard to sheet metal components, a new class of high manganese steels, based on the TWIP (twinning induced plasticity) effect, provides the opportunity of shaping light weight designed thin and complex sheet metal geometries with advanced crash performance. In terms of weldability, due to their thermo-physical properties (high content of C, Mn, Al, Si), FeMn steels have to be handled differently in comparison to conventional steel grades. Particularly dissimilar material combinations of FeMn and ferrite steels are in the center of interest for industrial applications. This study reveals that metallurgical properties of dissimilar welding seams can be influenced considerably by laser beam welding, resulting in a change of the mechanical properties of the seam which is practicable without using filler material as described in (Flügge et al., 2011).

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“…They were also remarkably sensitive to hot cracking compared to the CreNi stainless steels due to the relatively large solidification temperature range, high expansion coefficient, and low heat conductivity [16]. Unfortunately, the poor weldability of austenitic high Mn steels still remains an unsolved problem.…”

Section: Introductionmentioning

confidence: 99%

Effect of silicon on the solidification cracking behavior and metastable carbide formation in austenitic high Mn steel welds

Yoo

Han

Park

et al. 2014

Materials Chemistry and Physics

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Investigations on Hot Cracking of Novel High Manganese TWIP-Steels

Cited by 12 publications

References 6 publications

Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet

Microstructure and Mechanical Properties of Gas Tungsten Arc Welded High Manganese Steel Sheet

Investigations on Laser Beam Welding Dissimilar Material Combinations of Austenitic High Manganese (FeMn) and Ferrite Steels

Effect of silicon on the solidification cracking behavior and metastable carbide formation in austenitic high Mn steel welds

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