Oxidation behaviour of an austenitic Fe–30Mn–5Al–0.5C alloy

Pérez, P.; Pérez, F.J.; Gómez, C.; Adeva, P.

doi:10.1016/s0010-938x(01)00043-9

Cited by 30 publications

(19 citation statements)

References 13 publications

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“…However, a number of previous studies showed that addition of alloying elements with intermediate oxide stability did not in all cases promote protective external scale formation, as would have been expected on the basis of the above “gettering” effect. It was, for example, found that the transition from internal to external oxidation of Al in Fe‐base alloys is not affected by the manganese addition . Based on these and other studies the “gettering” is not generally applicable .…”

Section: Resultsmentioning

confidence: 99%

Effect of nickel base superalloy composition on oxidation resistance in SO₂ containing, high pO₂ environments

Jalowicka

Nowak

Naumenko

et al. 2013

Materials & Corrosion

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Modern gas turbine materials are subjected to increasing operating temperatures in service environments, which contain high concentrations of gaseous species originating from fuel impurities, e.g. sulfur. In the present study, the oxidation behavior of two commercially available nickel‐base alloys, Rene 80 and PWA 1483, was investigated for up to 500 h duration in synthetic air and synthetic air containing 2% SO2 at 1050 °C. In order to investigate the mechanisms of SO2 attack, specimens of the two alloys after different oxidation times were characterized using a number of surface analytical techniques such as scanning electron microscopy, XRD, and glow discharge optical emission spectrometry. The corrosion reactions in the presence of SO2 were found to be strongly alloy dependent and could not be explained simply in terms of the contents of the main scale‐forming alloying elements, Cr and Al. Severe internal sulfidation was observed underneath the chromium‐rich oxide scale on Rene 80, leading to breakaway oxidation after longer exposure times. For PWA 1483 sub‐scale formation of a near‐continuous alumina occurred, which resulted in substantial suppression of sulfidation. Consequently, no breakaway oxidation of PWA 1483 was observed up to 500 h exposure at 1050 °C in synthetic air with 2% SO2. The formation of a dense alumina sub‐scale on PWA 1483 is believed to be correlated with the Ta‐addition in this material. It is proposed that Ta can tie up Ti by forming a mixed oxide of the type TiTaO4. In this way, it prevents the incorporation of Ti into the chromia scale, which can lead to enhanced scale growth.

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Section: Resultsmentioning

confidence: 99%

Effect of nickel base superalloy composition on oxidation resistance in SO₂ containing, high pO₂ environments

Jalowicka

Nowak

Naumenko

et al. 2013

Materials & Corrosion

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“…[7,[10][11][12]. In addition, an optimal chemical compositions of Fe-Al-Mn-C alloys are in the range of Fe-(4.9-11.0 wt.%)Al-(23.7-35 wt.%)Mn-(0.5-1.5 wt.%)C [2,5,[13][14][15]. Thus, the Fe-Al-Mn-C alloys are suitable for industrial use and in biomedical applications.…”

Section: Introductionmentioning

confidence: 99%

Research of phase transformation on Fe–8.7Al–28.3Mn–1C–5.5Cr alloy

Huang

Chen

et al. 2009

Journal of Alloys and Compounds

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“…Besides, C increases the stability of the austenitic phase if its content does not exceed 1 at.%. It had been reported that the optimal weigh composition for Fe-Mn-Al-C system is 25-30% Mn, 8-10% Al and near 1% C [1][2][3][4][5]. The Mo addition on Fe-Mn-Al-C alloy increases the mechanical strength at high temperatures.…”

Section: Introductionmentioning

confidence: 99%

ICEMS study of isothermal oxidation of Fe–Mn–Al–C–Cr–Si–Mo, Fe–Mn–Al–C–Cr–Si and Fe–9Cr–1Mo alloys

et al. 2008

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The purpose of this paper is to investigate the isothermal behavior of Fe-27.3Mn-7.6Al-C-6.5Cr-0.25Si-0.88Mo (Mo(0)) and Fe-27.3Mn-7.6Al-1.0C-6.5Cr-0.25Si (Mo(1)) alloys and compare it against Fe-9Cr-1Mo (FCR) commercial alloy. The experiments were carried out at 600 • C, 700 • C, 750 • C and 850 • C, each one during 72 h in static air. The oxidation kinetics was measured as a function of time using a Thermogravimetry analyzer (TGA). The structure and composition of the oxide scale were characterized by X-ray diffraction (XRD) and Integral Conversion Electron Mössbauer Spectroscopy (CEMS). The TGA results show that at all oxidation temperatures the sample FCR exhibit the lowest kinetic corrosion and the lowest weight gain, whereas Mo(0) the highest. By CEMS technique it were found a broad magnetic sextet, which has been fit by one hyperfine field distribution with mean hyperfine field characteristic to ferritic/martensite phase, one Fe 3+ doublet and one singlet for the Mo(0) and Mo(1) alloys. Samples oxidized at highest temperatures exhibit a strong paramagnetic line, probably due that the Cr or Mn oxides may be enriched on the surface. Then, the magnetic phase can be converted partially into austenite phase at highest temperatures.

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Oxidation behaviour of an austenitic Fe–30Mn–5Al–0.5C alloy

Cited by 30 publications

References 13 publications

Effect of nickel base superalloy composition on oxidation resistance in SO₂ containing, high pO₂ environments

Effect of nickel base superalloy composition on oxidation resistance in SO₂ containing, high pO₂ environments

Research of phase transformation on Fe–8.7Al–28.3Mn–1C–5.5Cr alloy

ICEMS study of isothermal oxidation of Fe–Mn–Al–C–Cr–Si–Mo, Fe–Mn–Al–C–Cr–Si and Fe–9Cr–1Mo alloys

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Oxidation behaviour of an austenitic Fe–30Mn–5Al–0.5C alloy

Cited by 30 publications

References 13 publications

Effect of nickel base superalloy composition on oxidation resistance in SO2 containing, high pO2 environments

Effect of nickel base superalloy composition on oxidation resistance in SO2 containing, high pO2 environments

Research of phase transformation on Fe–8.7Al–28.3Mn–1C–5.5Cr alloy

ICEMS study of isothermal oxidation of Fe–Mn–Al–C–Cr–Si–Mo, Fe–Mn–Al–C–Cr–Si and Fe–9Cr–1Mo alloys

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Effect of nickel base superalloy composition on oxidation resistance in SO₂ containing, high pO₂ environments

Effect of nickel base superalloy composition on oxidation resistance in SO₂ containing, high pO₂ environments