Structure and Mechanical Properties of High-Alloy Manganese - Aluminum Steels

Charles, J.; Berghezan, A.; Lutts, A.

doi:10.1051/jphyscol:1982466

Cited by 7 publications

(9 citation statements)

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“…[16] Furthermore, it provides an increased mechanical strength for austenite via hardening by solid solution and an increased corrosion resistance. [3,24] Ni also increases the SFE. Silicon, in contrast to aluminum, destabilizes austenite and promotes its transformation into e-martensite during deformation or cooling.…”

Section: Introductionmentioning

confidence: 83%

“…The addition of aluminum to high Mn steels increases the SFE significantly and then stabilizes austenite against the (γFCC → ϵHCP → α′BCC) transformation which occurs in Fe–(15–25%)Mn during deformation . Furthermore, it provides an increased mechanical strength for austenite via hardening by solid solution and an increased corrosion resistance . Ni also increases the SFE.…”

Section: Introductionmentioning

confidence: 99%

“…In steels with 27%Mn, additions of 2%Si decreases the SFE, and consequently favors the ϵ‐martensite formation . Furthermore, the addition of silicon realizes solid solution hardening of the austenite …”

Section: Introductionmentioning

confidence: 99%

“…The formation of martensite can be induced thermally and/or by straining . During cooling, austenitic FeMn within a restricted chemical composition range partially transforms into ϵ‐ and α′‐martensite, leaving some remnant austenite …”

Section: Introductionmentioning

confidence: 99%

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Effect of the Cold Rolling Reduction on the Microstructural Characteristics and Mechanical Behavior of a 0.06%C–17%Mn TRIP/TWIP Steel

Escobar

Dafé

Verbeken

et al. 2015

steel research int.

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High Mn steels, alloyed with Si and Al, present large plasticity when deformed due to the TRIP/TWIP effect. The present work studies the microstructural evolution and its influence on the mechanical behavior of a steel containing 17%Mn and 0.06%C after cold rolling to 45 and 90% reduction and subsequent annealing at 700 °C for different times. The microstructural analysis is performed by X‐ray diffraction (XRD), scanning electron microscopy (SEM)‐electron backscatter diffraction (EBSD), and transmission electron microscopy (TEM). It is observed that cold reduction induces the formation of ϵ‐ and α′‐martensite. The material exhibits yield and tensile strength around 700 and 950 MPa, respectively, with a total elongation around 43% and a work hardening exponent of around 0.30 after 45% cold rolling and subsequent annealing and a yield and tensile strength of 750 and 950 MPa, respectively, with a total elongation of almost 50% when 90% cold rolling and subsequent annealing. The austenite texture contains brass, copper, and Goss components, while the α′‐ and ϵ‐martensite textures mainly consist of rotated cube and prismatic and pyramidal fibers, respectively.

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Section: Introductionmentioning

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of the Cold Rolling Reduction on the Microstructural Characteristics and Mechanical Behavior of a 0.06%C–17%Mn TRIP/TWIP Steel

Escobar

Dafé

Verbeken

et al. 2015

steel research int.

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“…On the other hand, alloying by Si, the c to e phase transformation is sustained. [6][7][8][9] It has been reported that the SFE affected phase composition and tensile properties of these alloys can be systematically changed by altering the Si/Al ratio. [10] The use of these steels requires an in depth knowledge of their processing method like weldability.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Si and Al Alloying on α/γ Phase Equilibria in Fe-Cr-Ni-Mn Based Ternary and Quaternary Systems

Shuro

Kobayashi

Nakamura

et al. 2014

J. Phase Equilib. Diffus.

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Phase equilibria between the ferrite phase (a) and the austenite phase (c) were investigated in the iron-rich corner of the Fe-Cr-Mn-Ni-Si/Al systems at 1000°C using a diffusion multiple approach and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) techniques. Cr equivalents of Si and Al are established as a function of Ni and Mn content in contrast to fixed values reported in other studies. The Cr equivalents of Si (Cr eq Si ) are in the range between 20.5 and 1.3 being positive at 0 wt.% Mn and with values slightly below zero at 5-15 wt.% Mn. The Cr equivalents of Al (Cr eq Al ) ranged between 0.6 and 4.8 decreasing with increase in Ni and Mn content. When compared to Cr eq Al , the Cr eq Si do not show a strong dependence on Ni and Mn content. Thermodynamic calculation using Thermo-Calc software agrees with the experimental results qualitatively.

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Deformation mechanisms of a 20Mn TWIP steel investigated by in situ neutron diffraction and TEM

et al. 2013

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Structure and Mechanical Properties of High-Alloy Manganese - Aluminum Steels

Cited by 7 publications

References 0 publications

Effect of the Cold Rolling Reduction on the Microstructural Characteristics and Mechanical Behavior of a 0.06%C–17%Mn TRIP/TWIP Steel

Effect of the Cold Rolling Reduction on the Microstructural Characteristics and Mechanical Behavior of a 0.06%C–17%Mn TRIP/TWIP Steel

The Effects of Si and Al Alloying on α/γ Phase Equilibria in Fe-Cr-Ni-Mn Based Ternary and Quaternary Systems

Deformation mechanisms of a 20Mn TWIP steel investigated by in situ neutron diffraction and TEM

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