Effect of isochronal annealing on the microstructure, texture and mechanical properties of a cold-rolled high manganese steel

Pramanik, Sudipta; Saleh, Ahmed A.; Pereloma, Elena V.; Gazder, Azdiar A.

doi:10.1016/j.matchar.2018.06.022

Cited by 15 publications

(10 citation statements)

References 42 publications

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“…Thus, the present investigation tracks the evolution of the microstructure and e-and a¢-martensite reversion mechanisms during the in situ annealing of an Fe-17Mn-3Al-2Si-1Ni-0.06C steel. Our previous ex situ annealing study of the same high Mn steel also showed the formation of twins in reverted c. [23] In the present follow-up in situ annealing work, the mechanism of twin formation in reverted c is explored.…”

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confidence: 73%

“…[22] Our previous ex situ annealing study of high Mn steel tracked the reversion of e-and a¢-martensite to c in multiple samples heated to different temperatures. [23] However, the e-and a¢-martensite reversion mechanisms can be better investigated via in situ annealing experiments. To our knowledge, the literature does not contain any in situ annealing studies of e-and a¢-martensite reversions in high Mn steels.…”

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confidence: 99%

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Evolution of Microstructure During the In Situ Heating of 42 Pct Cold-Rolled High Mn Steel

Pramanik

Mitchell

Saleh

et al. 2018

Metall Mater Trans A

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An Fe-17Mn-3Al-2Si-1Ni-0.06C wt pct high Mn steel was cold rolled to 42 pct thickness reduction, leading to a mixed microstructure of e-and a¢-martensite along with a trace amount of austenite (c). The reverse transformation of e-and a¢-martensite to c was tracked by in situ heating from room temperature up to 800°C followed by 600 seconds holding in a transmission electron microscope. The transformation of e-and a¢-martensite to c followed the Shoji-Nishiyama (S-N) and Kurdjumov-Sachs (K-S) orientation relationships, respectively. No changes in the grain shape or motion of any interfaces between e-martensite/c and a¢-martensite/c were observed during the reverse transformation process. The c reverted from e-martensite contained fine twins upon recovery, and a mechanism is proposed for the formation of these twins.

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confidence: 73%

mentioning

confidence: 99%

Evolution of Microstructure During the In Situ Heating of 42 Pct Cold-Rolled High Mn Steel

Pramanik

Mitchell

Saleh

et al. 2018

Metall Mater Trans A

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“…The {001}<110> component showed high intensity, as indicated in Figure . In fact, the {001}<110> orientation is formed with ideal {001}<100> and {110}<112> orientations through the K‐S orientation . Weidner et al reported a similar orientation in high‐alloy metastable austenitic CrMnNi steel with different nickel contents for cold rolling of less than 70%.…”

Section: Discussionmentioning

confidence: 99%

Strain‐Induced Martensite and Reverse Transformation in 2304 Lean Duplex Stainless Steel and its Influence on Mechanical Behavior

Maria

Pedroso

Rodrigues

et al. 2018

steel research int.

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Duplex stainless steels (DSS) combine the mechanical properties of ferrite (α) with the corrosion resistance of austenite (γ), and is widely used in industrial applications. The γ can transform into martensite (SIM) during a deformation. When annealed, these types of steel undergo a reverse transformation, namely, SIM reversed to austenite (SIMRT). The aim of this study is to evaluate SIM and SIMRT in 2304 lean DSS (LDSS) as well as its influence on the mechanical properties after a 60% reduction in thickness. The annealing is conducted within a range of 600–900 °C with a soaking time of 1800s. The samples undergo X‐ray diffraction, EBSD, and a tensile test. The results show that, after cold rolling, the amount of α′‐martensite formed is made up 24%. The α′‐martensite collaborates with the enhanced yield strength and reduces the total elongation. The orientation among γ and α′‐martensite, and (111)γ//(110)α [110]γ//[111] Kurdjumov‐Sachs and (111)γ//(110)α [110]γ//[001]α Nishiyama–Wassermann, is observed after deformation and during the reversion process. The EBSD shows a high misorientation inside the γ after the cold rolling. The SIMRT shows diffusional and shear reversion characteristics, at 900 °C, yield strength is 468 MPa, and the elongation is 32%.

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“…To‐date, limited studies are conducted to elucidate the strain localization using DIC in phase transforming high Mn steels subjected to uniaxial tension . Although tensile testing was performed on a steel of similar composition, it was undertaken without DIC. Furthermore, the microstructural characterization via EBSD before and after tension was also missing.…”

Section: Introductionmentioning

confidence: 99%

Effect of Uniaxial Tension on the Microstructure and Texture of High Mn Steel

et al. 2018

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Cold-rolled to 42% thickness reduction and annealed at 500, 625, and 700 C, an Fe-17Mn-3Al-2Si-1Ni-0.06C wt% steel is subjected to uniaxial tension and characterized via digital image correlation and electron back-scattering diffraction. The cold-rolled and 500 C samples return similar microstructures comprising predominantly α 0 -martensite and remnant e-martensite fractions and a trace fraction of untransformed austenite (γ) before and after uniaxial tension. For the 625 and 700 C samples, uniaxial tension results in the transformation of the initially reverted and recrystallized γ into e and α 0martensite via strain localization. The γ shows the formation of h111i γ , h100i γ double-fiber texture, whereas the e and α 0 -martensite show the development of the {hkil} e and h110i α 0 || ND fibers, respectively. 10 12gh 1011i e È extension twinning is also observed in e-martensite upon uniaxial tension. The cold-rolled sample exhibits a mixed brittle and ductile fracture mode. The fracture of the 500 C sample is similar to that of the cold-rolled sample, whereas the 625 and 700 C samples display a ductile fracture mode.

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Effect of isochronal annealing on the microstructure, texture and mechanical properties of a cold-rolled high manganese steel

Abstract: Effect of isochronal annealing on the microstructure, texture and mechanical Effect of isochronal annealing on the microstructure, texture and mechanical properties of a cold-rolled high manganese steel properties of a cold-rolled high manganese steel

Cited by 15 publications

References 42 publications

Evolution of Microstructure During the In Situ Heating of 42 Pct Cold-Rolled High Mn Steel

Evolution of Microstructure During the In Situ Heating of 42 Pct Cold-Rolled High Mn Steel

Strain‐Induced Martensite and Reverse Transformation in 2304 Lean Duplex Stainless Steel and its Influence on Mechanical Behavior

Effect of Uniaxial Tension on the Microstructure and Texture of High Mn Steel

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