Phases Equilibrium Study in Quaternary Iron-rich Fe-Al-Mn-C Alloys

Rigaud, Vincent; Daloz, D.; Drillet, J.; Perlade, A.; Maugis, Philippe; Lesoult, G.

doi:10.2355/isijinternational.47.898

Cited by 20 publications

(9 citation statements)

References 15 publications

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“…However, it may be considered that the observed phase is a needle‐shaped κ‐phase. This observation is consistent with the ones found in the literature and confirms the morphology dependence on the C‐content, according to which globular κ‐phase is found in C‐rich areas, whereas needle‐shaped κ‐phase is observed in regions with low C‐contents . Interestingly, the precipitated phase fraction here is distributed in a very regular manner within the large ferritic grains.…”

Section: Resultssupporting

confidence: 92%

On the Microstructure and Properties of a High Al-Alloyed 100Cr6 Steel

Bambach�

Stieben

Bleck

2015

steel research int.

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Macroscopic failure of high-performance components such as the bearings in a gearbox of wind converters is usually caused by effects occurring on a microscopic scale, e.g., crack initiation at non-metallic inclusions. Failure of these components leads to high maintenance costs. This work focuses on modifying the chemical composition of the standard bearing steel 100Cr6 in order to increase its strain-hardening potential, and thus its damage tolerance while maintaining the degree of cleanliness. Al alloying is used to adjust a suitable combination of strengthening mechanisms. Dilatometric and metallographic analyses are performed to identify the phase transformation behavior and the microstructure constituents of the designed alloy. Special attention is paid to the formation and morphology of the k-phase, a Fe 3 AlC-phase which contributes to the strainhardening potential of the material. The mechanical properties are determined at several heat-treatment states and compared to the ones of conventional 100Cr6 steel. It is shown that the k-phase may be used for tailoring the strain-hardening potential during local plastic deformation, and thus reduce stress concentrations at inclusions.

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Section: Resultssupporting

confidence: 92%

On the Microstructure and Properties of a High Al-Alloyed 100Cr6 Steel

Bambach�

Stieben

Bleck

2015

steel research int.

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“…The presence of Al atoms in the system changes the disordered FCC structure to ordered FCC and C atoms cause the formation of the K (Fe,Mn)3AlC phase. This ĸ phase surrounds the austenite phase in the α/γ duplex system [27].…”

Section: Discussion Of Experimental Resultsmentioning

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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“…Автори зазначеної роботи не знайшли κ-карбідні виділення у метастабільному аустеніті методом оптичної мікроскопії. Проте Bentley у роботі [42] спостерігав розклад аустеніту, що демонструє впорядкування L1 2фази на дифракційній картині за допомогою трансмісійної електронної мікроскопії у листовій Fe-32Mn-11Al-(0,8-1,0)C сталі, що була відпалена при 1000 °C і швидко охолоджена у маслі. Дифракційна картина в зразках ідентична таким, що спостерігаються у загартованих сталях після старіння.…”

Section: вплив основних елементів на фазовий склад і механічні властивості легких марганцевих сталей привабливість сталей на основіunclassified