Interpretation of cryogenic-temperature Charpy impact toughness by microstructural evolution of dynamically compressed specimens in austenitic 0.4C–(22–26)Mn steels

Kim, Hyunmin; Ha, Yumi; Kwon, Ki Hyuk; Kang, Minju; Kim, Nack J.; Lee, Sunghak

doi:10.1016/j.actamat.2014.11.027

Cited by 76 publications

(14 citation statements)

References 44 publications

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“…The authors [17] proposed the Charpy impact toughness of three austenitic high Mn steel tested at room temperature and cryogenically. The majority of martensite is formed in 0.4C-22Mn steel via the transformation-induced plasticity (TRIP) mechanism.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of Fe-11Al-xMN alloy steel on cryogenic temperatures

Kartikasari

Subardi

Wijaya

2021

EEJET

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This research is focused on increasing the reliability of Fe-11Al-Mn by combining the properties of Mn and the superiority of Fe-Al-C under cryogenic temperature. Three Fe-11Al-Mn alloys with compositions of 15 wt % Mn (F15), 20 wt % Mn (F20), and 25 wt % Mn (F25) were investigated. The cryogenic process uses liquid nitrogen in a temperature range of 0–196 °C. Hardness testing using the Vickers method and SEM was used to analyze the microstructure. X-ray diffraction (XRD) testing was conducted to ensure the Fe-11Al-Mn alloy phase and corrosion testing was carried out using the three-electrode cell polarization method. With the addition of Mn, the Vickers hardness of the Fe-11Al-Mn alloy decreased from 331.50 VHN at 15 wt % to 297.91 VHN at 25 wt %. The value of tensile strength and fracture elongation values were 742.21 MPa, 35.3 % EI; 789.03 MPa, 41.2 % EI; and 894.42 MPa, 50.2 % EI, for F15, F20, and F25, respectively. An important factor for improving the performance of cryogenic materials is the impact mechanism. The resulting impact toughness increased by 2.85 J/mm2 to 3.30 J/mm2 for F.15 and F25, respectively. The addition of the element Mn increases the corrosion resistance of the Fe-11Al-Mn alloy. The lowest corrosion rate occurs at 25 % wt Mn to 0.016 mm/year. Based on the results, the F25 alloy has the highest mechanical and corrosion resistance of the three types of alloys equivalent to SS 304 stainless steel. The microstructure of Fe-11Al-Mn alloy was similar between before and after cryogenic temperature treatment, this condition showed that the microstructure did not change during the process. From the overall results, the Fa-11Al-Mn alloy is a promising candidate for material applications working at cryogenic temperatures by optimizing the Mn content

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

Development of Fe-11Al-xMN alloy steel on cryogenic temperatures

Kartikasari

Subardi

Wijaya

2021

EEJET

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“…Hereinafter, high-Mn austenitic steel is defined in a broad sense as the steel characterised by a high concentration of Mn, an initially fully austenitic phase state, and low-to-moderate stacking fault energies (SFEs). This category includes traditional Hadfield steels (Hadfield 1888), cryogenic high-Mn steels (Charles et al 1981;Kim et al 2015;Sohn et al 2015), non-magnetic high-Mn steels, TRIP/TWIP steels (Grassel et al 2000;Bouaziz et al 2011;Cooman et al 2018), high damping Fe-Mn alloys (Wang et al 2019;Shin et al 2017;Jee et al 1997), and Fe-Mn-Si-based shape-memory alloys (SMAs) (Sato et al 1982;Otsuka et al 1990). In most cases, steels contain other alloying elements, such as Cr, Ni, Al, Si, C, and N, and the concentration of Mn depends on the alloy system (e.g.…”

Section: Introductionmentioning

confidence: 99%

Designing High-Mn Steels

Sawaguchi

2022

The Plaston Concept

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High-Mn austenitic steels undergo characteristic plasticity mechanisms of the γ-austenite with an FCC structure, such as extended dislocation glide, mechanical twinning, and mechanical martensitic transformation into ε-martensite with an HCP structure and/or α’-martensite with a BCC/BCT structure. Distortions of polyhedron models are used to describe these plasticity mechanisms. These are the smallest volumetric units occupying the lattices and reflect the crystallographic characteristics of the lattices. The complicated crossing shears are correlated to the fine crystal phases formed at the intersection of the ε-martensite variants. The unidirectionality of the {1 1 1} < 1 1 2 > γ twinning shear provides reversibility to the dislocation motion under cyclic loading. Based on this knowledge, the design concept of high-Mn steels is described considering microstructural, thermodynamic, and crystallographic characteristics.

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“…The cost of nickel cryogenic steels is relatively high due to the addition of a large amount of expensive nickel. To reduce the production cost of cryogenic steels and its dependence on high-priced nickel, high manganese austenitic steels have attracted much attention because of its low price, excellent plasticity and toughness [9][10][11][12][13]. Using manganese rather than nickel can improve the low-temperature stability of austenite in cryogenic steels.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature, strain rate and chromium content on the flow behavior of high-manganese steels

Xia

Yan

Zhang

et al. 2022

Mater. Res. Express

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Compression tests and metallographic observation were conducted to investigate the effect of temperature (400-1100 ℃), strain rate (0.001-10 s-1) and chromium content (0.21-5.44 wt.%) on the flow behavior of high manganese steels for cryogenic application. The results showed that the flow stress reduced with increased temperature and decreased strain rate. The effect of chromium content on the flow stress of steels was not linear. The lowest flow stress was got when the content of chromium was 1.53 wt.%. The influence of strain rate and temperature was obvious while that of chromium content was minor. The maximum flow stress decreased 538 MPa-571 MPa when the temperature rised from 400 ℃ to 1100 ℃ at the strain rate 10 s-1. It ascended 146 MPa-149 MPa when the strain rate increased from 0.001 s-1 to 10 s-1 at 400 ℃. However, the effect of chromium content on the maximum flow stress of steels did not exceed 50 MPa at tested temperatures and strain rates. Dynamic recrystallization (DRX) was observed for all tested steels at 1100 ℃. Higher temperatures and lower strain rates seemed to promote DRX. The true strain required for DRX was the largest when the chromium content in steels was 1.53 wt.%. It delayed the occurrence of DRX.

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Interpretation of cryogenic-temperature Charpy impact toughness by microstructural evolution of dynamically compressed specimens in austenitic 0.4C–(22–26)Mn steels

Cited by 76 publications

References 44 publications

Development of Fe-11Al-xMN alloy steel on cryogenic temperatures

Development of Fe-11Al-xMN alloy steel on cryogenic temperatures

Designing High-Mn Steels

Effect of temperature, strain rate and chromium content on the flow behavior of high-manganese steels

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