Microstructural evolution and mechanical properties of Ni-containing light-weight medium-Mn TRIP steel processed by intercritical annealing

Zhang, Bao-Guang; Zhang, Xiaoming; Liu, Haitao

doi:10.1016/j.msea.2020.139289

Cited by 21 publications

(3 citation statements)

References 38 publications

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“…A comparison of the tensile strength and TE of other steels with microalloying elements (such as maraging steel [ 31 ], TWIP steel [ 32 ], TRIP steel [ 33 ], medium-Mn steel (MMS) [ 4 , 34 , 35 , 36 , 37 , 38 , 39 ], and QP steel [ 40 ]) and the present steel is shown in Figure 16 . It is obvious that the best combination of the strength and ductility of the studied steel is over 50 GPa·%.…”

Section: Discussionmentioning

confidence: 99%

Microstructure and Mechanical Properties of a Medium-Mn Steel with 1.3 GPa-Strength and 40%-Ductility

et al. 2021

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Steel designs with superior mechanical properties have been urgently needed in automotive industries to achieve energy conservation, increase safety, and decrease weight. In this study, the aging process is employed to enhance the yield strength (YS) by tailoring the distribution of V-rich precipitates and to improve ductility by producing high volume fractions of recrystallized ferrite in cold-rolled medium-Mn steel. A reliable method to acquire ultra-high strength (1.0–1.5 GPa), together with ductility (>40%), is proposed via utilizing non-recrystallized austenite and recrystallized ferrite. Similarly to conventional medium-Mn steels, the TRIP effect, along with the mild TWIP effect, is responsible for the main deformation mechanisms during tensile testing. However, the coupled influence of precipitation strengthening, grain refinement strengthening, and dislocation strengthening contributes to an increase in YS. The studied steel, aged at 650 °C for 5 h, demonstrates a YS of 1078 MPa, ultimate tensile strength (UTS) of 1438 MPa, and tensile elongation (TE) of 30%. The studied steel aged at 650 °C for 10 h shows a UTS of 1306 MPa and TE of 42%, resulting in the best product in terms of of UTS and TE, at 55 GPa·%. Such a value surpasses that of the previously reported medium-Mn steels containing equal mass fractions of various microalloying elements.

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Section: Discussionmentioning

confidence: 99%

Microstructure and Mechanical Properties of a Medium-Mn Steel with 1.3 GPa-Strength and 40%-Ductility

et al. 2021

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“…with High-PerformanceMaterials Post-RHP The comparison of tensile mechanical properties at room temperature of HEA with highperformance materials after RHP is presented in Fig. 10 [201][202][203][204][205][206][207][208][209] . The best strength ductility combination (PSD) of RHPed HEA (maximum PSD of 60 GPa × % FeCoCrNiMn-1 at % C) is in the same range of TWIP steel (PSD: 58 GPa × %) 204 , TRIP steel (PSD: 51 GPa × %) 208 .…”

Section: Comparisonof Heapropertiesmentioning

confidence: 99%

“…10 [201][202][203][204][205][206][207][208][209] . The best strength ductility combination (PSD) of RHPed HEA (maximum PSD of 60 GPa × % FeCoCrNiMn-1 at % C) is in the same range of TWIP steel (PSD: 58 GPa × %) 204 , TRIP steel (PSD: 51 GPa × %) 208 . The highest yield strength (YS) values of RHPed HEA (maximum YS: 1437 MPa AlCoCrFeNi 2.1 ) are close to that of Fe-20 Cr-20 Ni steel (YS: 1428 MPa) 207 , austenitic stainless steel (YS: 1410 MPa) 206 , etc.…”

Section: Comparisonof Heapropertiesmentioning

confidence: 99%

Strength–Ductility Synergy in High Entropy Alloys by Tuning the Thermo-Mechanical Process Parameters: A Comprehensive Review

2022

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IntroductionHigh Entropy Alloys (HEA) are the class of alloys having minimum of five principal elements with a concentration of constituent elements between 5 and 35 at% [1][2][3][4] . The microstructure, properties, and performance of HEA are driven by four core effects, i.e., high configurational entropy 1,5 , lattice distortion 3 , sluggish diffusion 6 , and cocktail effect 7 . Owing to these effects, HEA exhibit excellent tensile ductility, fracture toughness, corrosion resistance, and many other important properties of relevance [8][9][10][11][12][13] . The combination of desirable property attributes in HEAs makes these materials a perfect candidate for numerous applications, like in gas storage, in ion irradiation plants, and for biomedical implants [13][14][15] . The lower yield

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Effect of Aluminum Content on the Dynamic Recrystallization of Fe18MnxAl0.74C Steels During Hot-Forging Treatments

Rodrı́guez

Durán

Aguilar

et al. 2022

Metall Mater Trans A

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In the present work, the dynamic recrystallization and microstructural evolution of the family of advanced high-strength steels Fe18MnxAl0.74C are studied, varying the aluminum content in 0, 3, 6, and 9 wt pct subjected to hot-forging treatments through three consecutive heating-deformation cycles. For characterization, X-ray diffraction (XRD), Mössbauer absorption spectroscopy (MAS), and electron backscattering diffraction (EBSD) were used. It was determined that for the steels under study, dynamic recrystallization occurs due to strain-induced boundary migration (SIBM) and is strongly influenced by the aluminum content of the alloy and its stacking failure energy (SFE), increasing that the aluminum content will generate greater nucleation sites, favoring the refinement of grains in the material and achieving a crystalline structure of random crystallographic orientation. The results are discussed throughout the article, allowing us to determine potential processing routes for advanced high-strength steels with predominantly plastic deformation mechanisms such as transformation-induced plasticity (TRIP), twinning-induced plasticity (TWIP), and microband-induced plasticity (MBIP).

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Microstructural evolution and mechanical properties of Ni-containing light-weight medium-Mn TRIP steel processed by intercritical annealing

Cited by 21 publications

References 38 publications

Microstructure and Mechanical Properties of a Medium-Mn Steel with 1.3 GPa-Strength and 40%-Ductility

Microstructure and Mechanical Properties of a Medium-Mn Steel with 1.3 GPa-Strength and 40%-Ductility

Strength–Ductility Synergy in High Entropy Alloys by Tuning the Thermo-Mechanical Process Parameters: A Comprehensive Review

Effect of Aluminum Content on the Dynamic Recrystallization of Fe18MnxAl0.74C Steels During Hot-Forging Treatments

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