A general perspective of Fe–Mn–Al–C steels

Zambrano, O.A.

doi:10.1007/s10853-018-2551-6

Cited by 179 publications

(43 citation statements)

References 375 publications

(459 reference statements)

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“…The dependency of the elements Mn, Al, Si and C on the SFE can be found here [ 26 ]. Besides the chemical composition, the SFE depends on the microsegregation (Suzuki effect) temperature and the grain size [ 27 ]. Since medium manganese steels exhibit a complex microstructure, these aforementioned effects can be controlled by the amount and the stability of metastable retained austenite (RA), which can be adjusted via a heat treatment process of intercritical annealing [ 28 , 29 , 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Adjustment of Mechanical Properties of Medium Manganese Steel Produced by Laser Powder Bed Fusion with a Subsequent Heat Treatment

et al. 2021

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Medium manganese steels can exhibit both high strength and ductility due to transformation-induced plasticity (TRIP), caused by metastable retained austenite, which in turn can be adjusted by intercritical annealing. This study addresses the laser additive processability and mechanical properties of the third-generation advanced high strength steels (AHSS) on the basis of medium manganese steel using Laser Powder Bed Fusion (LPBF). For the investigations, an alloy with a manganese concentration of 5 wt.% was gas atomized and processed by LPBF. Intercritical annealing was subsequently performed at different temperatures (630 and 770 °C) and three annealing times (3, 10 and 60 min) to adjust the stability of the retained austenite. Higher annealing temperatures lead to lower yield strength but an increase in tensile strength due to a stronger work-hardening. The maximum elongation at fracture was approximately in the middle of the examined temperature field. The microstructure and properties of the alloy were further investigated by scanning electron microscopy (SEM), hardness measurements, X-ray diffraction (XRD), electron backscatter diffraction (EBSD) and element mapping.

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Section: Introductionmentioning

confidence: 99%

Adjustment of Mechanical Properties of Medium Manganese Steel Produced by Laser Powder Bed Fusion with a Subsequent Heat Treatment

et al. 2021

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“…Recently, Hwang et al suggested that twinning-induced plasticity (TWIP) steel is a promising material for high strength wire rod products 13,14) including flat-rolled wire applications 15) because TWIP steels meet the strict property requirements for wire rod products originating from their outstanding combination of strength and ductility. [16][17][18][19][20][21][22][23][24] Moreover, TWIP steels have a higher resistance to hydrogen-delayed fracture in comparison with conventional plain carbon steels that are typically used for wire rod applica-tions. This is mainly due to the face-centered cubic (FCC) structure of TWIP steel.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Homogeneity of a Flat-rolled Wire in Twinning-induced Plasticity Steel Using the Pass Schedule Design

Hwang

2020

ISIJ Int.

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The effects of reduction in height per pass, roll diameter, and friction coefficient on the homogeneity of mechanical properties and shape change in flat-rolled twinning-induced plasticity steel wire were investigated. The goal was to improve the homogeneity of mechanical properties of a wire with area during flat rolling process using a numerical simulation, a hardness test, and electron backscatter diffraction techniques. Reduction in height per pass and roll diameter had large influences on both strain inhomogeneity and lateral spread of flat-rolled wire. Strain inhomogeneity and lateral spread increased with increasing the reduction in height per pass and roll diameter due to the higher length of the contact area. The underlying mechanism for the strain inhomogeneity and lateral spread of flat-rolled wire was highly related to the length of contact area. Hence, the length of the contact area needed reduction through controlling process conditions to improve the strain homogeneity of the flat-rolled wire. The effect of friction coefficient on lateral spread was negligible, whereas strain inhomogeneity slightly increased with friction coefficient. The combination of high and low reduction in height per pass with a smaller roll diameter improved the homogeneity of mechanical properties and microstructure over the area of the flat-rolled wire. Based on the results of numerical simulation and experimental test, a new practical strategy is proposed to achieve greater homogeneity of mechanical properties over the area of flat-rolled wire, which could be of great applicability in industrial fields.

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“…Fe-Mn-Al-C steels allow high-density reduction about ∼ 18 % lighter than conventional steels, high corrosion resistance, high strength (ultimate tensile strength ∼ 1 GPa), and at the same time ductility above 60 % [1], which have many potential applications in the field of advanced transportation systems, wear parts, shape memory alloys, and biomaterials, especially in automotive and powertrain systems. This has caused great interest in the automotive armor, mining, and steel industries.…”

Section: Introductionmentioning

confidence: 99%

Strain rate effects on mechanical properties of Fe-10Mn-5Al-0.5C steel

He¹,

Yang²,

Zhu³

et al. 2020

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The tensile deformation behavior of Fe-10Mn-5Al-0.5C steel was studied in an extensive range of strain rate (0.001-1200 s −1). The results show that the steel has high strength (886 MPa) and plasticity (41 %) and exhibits excellent combinations of specific strength and ductility (> 36,000 MPa %) at the strain rate of 0.001 s −1. With the increase of strain rate from 0.001 to 1200 s −1 , the tensile strength of the steel was increased from 886 to 1015 MPa, while its elongation first decreased from 41 to 16 %, and then increased from 16 to 25 %. At the strain rate of 450 s −1 , the elongation is minimal, and the energy absorption capacity is the lowest. With the deformation progresses, the value of n increases from small to large, the strain hardening effect becomes high.

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A general perspective of Fe–Mn–Al–C steels

Cited by 179 publications

References 375 publications

Adjustment of Mechanical Properties of Medium Manganese Steel Produced by Laser Powder Bed Fusion with a Subsequent Heat Treatment

Adjustment of Mechanical Properties of Medium Manganese Steel Produced by Laser Powder Bed Fusion with a Subsequent Heat Treatment

Enhanced Homogeneity of a Flat-rolled Wire in Twinning-induced Plasticity Steel Using the Pass Schedule Design

Strain rate effects on mechanical properties of Fe-10Mn-5Al-0.5C steel

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