Effect of Annealing on the Microstructure, Texture and Mechanical Properties of a Dual-Phase Ultrahigh-strength TWIP Steel

Tewary, N.K.; Ghosh, S. K.; Mandal, Animesh; Chakrabarti, Debalay; Chatterjee, S.

doi:10.1007/s11661-020-05851-9

Cited by 10 publications

(3 citation statements)

References 52 publications

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“…PWHT involved heating in air at 600, 750, or 900 • C for 30 min and cooling in water. The PWHT temperature and time were set considering partial recrystallization and precipitates [22,23]. Figure 1 shows the location of the specimen fabrication on the pipe used in this study.…”

Section: Methodsmentioning

confidence: 99%

The Effects of Post-Welding Heat Treatment on the Cryogenic Absorbed Energy of High Manganese Steel Weld Metal

Baek

Park

Lee

et al. 2023

Metals

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In this study, a post-weld heat treatment (PWHT) was proposed at high temperatures of 600 °C, 750 °C, and 900 °C for 30 min to significantly improve the impact absorbed energy of high manganese steel weld metal. Electron backscatter diffraction (EBSD), electron probe microanalysis (EPMA), and high-angle annular dark field scanning transmission electron microscopy (HAADF-STEM) were employed to characterize the production and study the deformation mechanisms in the high manganese steel weld metal. The impact absorbed energy is divided into crack initiation energy and crack propagation energy, which are divided by the value of Pmax. The cryogenic impact absorbed energy was 81 J. After PWHT at 600 °C, 750 °C, and 900 °C, it was 75 J, 69 J, and 88 J, respectively. The impact absorbed energies did not follow a proportional relationship with the PWHT temperatures. The increase in impact absorbed energy can be attributed to the narrowing of the dendritic region, which blocks the crack propagation path and efficiently prevents crack propagation. Conversely, the decrease in impact absorbed energy can be attributed to the presence of 100-nm-sized (Cr, Mn)23C6-type carbides at the grain boundaries, which facilitate crack propagation.

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Section: Methodsmentioning

confidence: 99%

The Effects of Post-Welding Heat Treatment on the Cryogenic Absorbed Energy of High Manganese Steel Weld Metal

Baek

Park

Lee

et al. 2023

Metals

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“…Mori et al [10] showed that the drop in total elongation by the hydrogen embrittlement for blanked ultra-high strength steel sheets is considerably larger than that in tensile strength. Tewary et al [11] examined the effect of annealing on the mechanical properties of a dual-phase ultra-high strength TWIP steel sheet. Although the uniaxial tensile test has the advantage of obtaining the accurate and abundant information, the preparation of specimens, testing and measurement are laborious.…”

Section: Introductionmentioning

confidence: 99%

Punching test for estimating tensile strength and total elongation of steel sheets

Nakamura

Mori

Okada

et al. 2021

Int J Adv Manuf Technol

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A punching test for simply estimating the tensile strength and total elongation of steel sheets and formed parts was proposed. The tensile strength and total elongation were estimated from the shear stress at the maximum punching load and percentage of the burnished depth at the sheared edge of the slug measured without cutting, respectively. For a variety of steel sheets with a range of the tensile strength from 360 to 1500 MPa, linear functions for the estimation were experimentally obtained. The correlation of the estimated tensile strength of the steel sheets with the measured one from the uniaxial tensile test was considerably high, and the correlation of the estimated total elongation was high. The distributions of tensile strength and total elongation for hot- and cold-stamped parts were estimated. The proposed punching test is available under not only a laboratory environment but also a factory environment.

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“…[21][22][23] Many studies have shown that the mechanical properties and recrystallization behavior vary with different high-manganese steels as SFE depends on specific alloying elements. [2,[24][25][26][27] Recently, a new high-manganese steel was designed. A study on new high-manganese steel is necessary.…”

mentioning

confidence: 99%

Recrystallization Behavior and Microstructure Evolution in High‐Manganese Austenitic Steel

Liu

Xiong

et al. 2021

steel research int.

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Natural gas has attracted increasing attention because it does not cause pollution and is low cost. Natural gas is usually transported or stored in cryogenic-temperature liquefied natural gas (LNG) applications such as pressure vessels and plumbing pipes. The essential requirements for the materials used for these applications are high strength and outstanding low-temperature toughness (Charpy impact toughness at À196 C). The traditional materials used for these applications are Ni-based invar alloys, 9Ni alloys, aluminum alloys, and austenitic steels. [1][2][3][4] Although these conventional cryogenic-temperature materials show excellent mechanical properties, they possess some disadvantages such as high cost, complex manufacturing process, and unstable service behavior. High-manganese austenitic steels have received increasing attention due to their promising potential for LNG applications. [5][6][7] High-manganese steels have high ductility, a combination of strength and toughness, low thermal expansion coefficient, and low cost. The main plastic deformation mechanisms are dislocation slip, mechanical twinning, and strain-induced phase transformation (such as twinning-induced plasticity and transformation-induced plasticity), which depends on stacking fault energy (SFE). [8][9][10][11][12] Scientific understanding of the recrystallization behavior (dynamic recrystallization [DRX] and static recrystallization [SRX]) is a prerequisite for material design and large-scale production in the industry.Recently, many studies have focused on the recrystallization behavior of microalloying high-manganese steels. [9,11,13] The study by Ezatpour et al. [9] on the effect of microalloying elements V and Nb on the DRX behavior of high-manganese steel shows that Nb-bearing steel exhibits high peak stress due to the fine initial grains and NbC precipitates. The dynamic recovery (DRV) is the main deformation mechanism during the work softening process. Gwon et al. [11] reported the hot deformation behavior of V microalloying high-manganese steel. The hot workability of high-manganese steel was decreased due to the addition of V. Finer grains in V microalloying high-manganese steel were obtained from rapid DRX kinetics. Llanos [13] proposed a model to predict the static-recrystallized grain size of high-manganese steel as a function of deformation conditions and alloy elements. The microstructure of high-manganese steel at room temperature is usually austenite. Many researchers have studied the recrystallization behavior of austenitic stainless steel. [14,15] The 304 austenitic stainless steel shows discontinuous dynamic recrystallization (DDRX) and continuous dynamic recrystallization (CDRX) for low and high strain rates, respectively. The strain rate plays an important role in flow stress and the substructure. The studies focusing on the hot deformation behavior or recrystallization behavior of low-alloy steels show that the recrystallization kinetics and model are related to specific materials.

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Effect of Annealing on the Microstructure, Texture and Mechanical Properties of a Dual-Phase Ultrahigh-strength TWIP Steel

Cited by 10 publications

References 52 publications

The Effects of Post-Welding Heat Treatment on the Cryogenic Absorbed Energy of High Manganese Steel Weld Metal

The Effects of Post-Welding Heat Treatment on the Cryogenic Absorbed Energy of High Manganese Steel Weld Metal

Punching test for estimating tensile strength and total elongation of steel sheets

Recrystallization Behavior and Microstructure Evolution in High‐Manganese Austenitic Steel

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