Anomalous cyclic oxidation behaviour of a Fe–Mn–Si–Cr–Ni shape memory alloy

Malafaia, Artur Mariano de Sousa; Oliveira, Marcelo Falção de

doi:10.1016/j.corsci.2017.02.026

Cited by 25 publications

(20 citation statements)

References 28 publications

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“…The FeMnSiCrNiCe alloy also showed k p values within the range found by de Sousa Malafaia and de Oliveira 10 for an alloy with a composition similar to that tested in this study (Fe-17Mn-5Si-10Cr-4Ni-0.59V-0.14C). In their study, the values of k p were between 9.95x10 -10 and 6.76x10 .s, at temperatures of 800, 900 and 1000 ºC.…”

Section: Oxidation Kineticssupporting

confidence: 62%

“…For the FeMnSiCrNiCe alloy, the value found was 133.8 KJ/mol. This value is higher than that found by de Sousa Malafaia and De Oliveira 10 for an Fe-17Mn-5Si-10Cr-4Ni-0.59V-0.14C alloy (109.0 KJ/mol). This activation energy is explained most likely by the composition of the studied alloy, which contained cerium and a lower amount of manganese.…”

Section: Oxidation Kineticscontrasting

confidence: 52%

“…After approximately 70 cycles, the alloy started to suffer spallation, but at a smaller rate compared to the AISI 304 steel. In a previous study 10 , anomalous behavior in a FeMnSiCrNi alloy was noticed: new mass gain after spallation at 800 and 900 ºC (with a lower rate than initial mass gain), which help to understand the decrease in mass loss rate after 200 cycles in the present study. As reported by Ma et al 9 , the high mass gains in the first cycles in which the alloys presented mass gains ten times higher than AISI steel 304 at 800 ºC, can be attributed to the presence of manganese.…”

Section: Oxidation Testsmentioning

confidence: 99%

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Kinetics Oxidation and Characterization of Cyclically Oxidized Layers at High Temperatures for FeMnSiCrNiCe and FeSiCrNi Alloys

et al. 2017

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Conventional stainless steels are used in cyclic oxidation, but the high amount of Cr and mainly Ni increase the price of these alloys. The objective of the present study was to assess the cyclic oxidation resistance of FeSiCrNi and FeMnSiCrNiCe alloys in comparison to AISI 304 and AISI 310 stainless steels by evaluating the oxidation kinetics and using characterization techniques to determine the oxides formed. The alloys were melted in induction furnaces and cast in sand molds. Cyclic oxidation tests were carried out in an automated oven in cycles of one hour for heating and maintenance at high temperature (850, 950 or 1050 ºC) and 10 minutes for cooling. To characterize the oxidized layers, X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Energy Dispersive X-Ray Spectroscopy (EDS) analysis were performed. The oxidation kinetics were determined. The results showed that the studied alloys presented better results than AISI 304 at 850 ºC, but at 1050 ºC, AISI 310 presented the best results. At 950 ºC, the FeSiCrNi alloy presented layer detachment and FeMnSiCrNiCe presented a higher rate of mass variation than AISI 310, both without oxide detachment. For both alloys, formation of chromium and manganese oxides with parabolic rate of mass gain occurred.

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Section: Oxidation Kineticssupporting

confidence: 62%

Section: Oxidation Kineticscontrasting

confidence: 52%

Section: Oxidation Testsmentioning

confidence: 99%

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Kinetics Oxidation and Characterization of Cyclically Oxidized Layers at High Temperatures for FeMnSiCrNiCe and FeSiCrNi Alloys

et al. 2017

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“…Several studies on the corrosion properties of the Fe-Mn-Si alloy have been conducted. [7][8][9][10][11][12][13][14][15][16][17][18] Although the corrosion resistance of the alloy could be improved through additions of alloying elements such as Cr, Al, Cu, Ni, and N, its commercial application is still limited due to its poor superelastic behavior at room temperature. [19] The Fe-28Ni-17Co-11.5Al-2.5Ta alloy, which was the first iron-based SMA showing a recovery strain up to 13% in a polycrystalline state, [19] shows a corrosion behavior similar to carbon steel in a 3.5 wt% NaCl solution.…”

Section: Introductionmentioning

confidence: 99%

On the Influence of Microstructure on the Corrosion Behavior of Fe–Mn–Al–Ni Shape Memory Alloy in 5.0 wt% NaCl Solution

et al. 2020

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Herein the corrosion behavior of Fe–Mn–Al–Ni shape memory alloys characterized by different microstructures in a 5.0 wt% NaCl solution is investigated. Open circuit potential and potentiodynamic polarisation tests are conducted. Generally, Fe–Mn–Al–Ni shows corrosion properties being similar to pure iron. However, the polarization curves of single crystals indicate the presence of an unstable passive system. The corrosion damage is analyzed by means of optical microscopy and electron microscopy. It is revealed that polycrystalline samples consisting of two different phases induced by heat treatment, i.e., α‐phase and γ‐phase or β‐Mn phase and γ‐phase, are suffering a selective corrosion attack of the α‐phase and β‐Mn–phase, respectively. On the contrary, the single crystal seems to form a protective layer on the surface. Upon presence of stress‐induced martensite, a selective corrosion attack of γ′–martensite is observed.

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“…By adding chromium a significant improvement in the corrosion behavior was achieved. [22][23][24][25][26][27][28] As similar effects were also observed for high Mn steels (these being only used for structural applications) with a chromium content of 1-3 wt%, [29] it seems reasonable to assume that adding a chromium content of 1.5 at% (≙1.5 wt%) to the FMAN alloy could already enhance the corrosion properties. Xia et al [30] already reported a good superelastic response for single crystalline specimens in the Fe-Mn-Al-Ni-Cr alloy system with chromium contents up to 7.5 at%.…”

Section: Introductionmentioning

confidence: 75%

Electrochemical polarization behavior and superelastic properties of a Fe–Mn–Al–Ni–Cr shape memory alloy

Frenck

Vollmer

Niendorf

2022

Materials & Corrosion

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The present study investigates the corrosion behavior of a Fe–Mn–Al–Ni–Cr shape memory alloy in a 5.0 wt% NaCl solution in combination with the functional properties. In a single crystalline condition, the investigated alloy shows a superior superelastic response with a maximum recovery strain of 5.2%. Furthermore, the results of the potentiodynamic polarization and impedance spectroscopy show that the addition of chromium generally improves corrosion resistance by increasing the resistance to localized corrosion. The single crystalline condition, which is characterized by an austenitic matrix and scattered martensite plates, shows an enhanced, however, still unstable passive behavior due to the formation of corrosion pits along the martensite plates.

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Anomalous cyclic oxidation behaviour of a Fe–Mn–Si–Cr–Ni shape memory alloy

Cited by 25 publications

References 28 publications

Kinetics Oxidation and Characterization of Cyclically Oxidized Layers at High Temperatures for FeMnSiCrNiCe and FeSiCrNi Alloys

Kinetics Oxidation and Characterization of Cyclically Oxidized Layers at High Temperatures for FeMnSiCrNiCe and FeSiCrNi Alloys

On the Influence of Microstructure on the Corrosion Behavior of Fe–Mn–Al–Ni Shape Memory Alloy in 5.0 wt% NaCl Solution

Electrochemical polarization behavior and superelastic properties of a Fe–Mn–Al–Ni–Cr shape memory alloy

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