The corrosion behaviour of Fe–15Mn–7Si–9Cr–5Ni shape memory alloy

Maji, Bikas C.; Das, Chintamani; Krishnan, Madangopal; Ray, R. K.

doi:10.1016/j.corsci.2005.02.024

Cited by 27 publications

(12 citation statements)

References 13 publications

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“…The polarization resistance of the as-received Fee32Mne6Si is very weak (450 U cm 2 ) compared with that observed for stainless steel (28000 U cm 2 ). These results agree with previous corrosion studies of iron-based SME [11] and justify the importance of finding an anticorrosive solution before considering the use of this material in industrial applications.…”

Section: Corrosion Testing and Electrochemical Behaviour Of The As-resupporting

confidence: 93%

Surface treatment and corrosion behaviour of Fe–32Mn–6Si shape memory alloy

Charfi¹,

Bouraoui²,

Feki³

et al. 2008

Comptes Rendus. Chimie

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Section: Corrosion Testing and Electrochemical Behaviour Of The As-resupporting

confidence: 93%

Surface treatment and corrosion behaviour of Fe–32Mn–6Si shape memory alloy

Charfi¹,

Bouraoui²,

Feki³

et al. 2008

Comptes Rendus. Chimie

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“…The strengthening by samarium (solid solution hardening) and rise in the Ms temperature during training may also have increased the driving force for the g to e transformation thus resulting in the higher amount of stress induced marten site and a good shape memory effect. Similar observations have been reported in previous work [1][2][3][4][5][6][7]. On the contrary, the drop in the shape memory effect of alloy sample 4 can be explained by its low strength, low c/a ratio and formation of ά martensite, which is considered to be detrimental for the shape memory behaviour of the alloys [8,9].…”

Section: Comparison Of Thermo-mechanical Behavioursupporting

confidence: 90%

“…Shape memory alloys are unique class of materials, which find their applications in a large variety of applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14]. The extended interest of researchers in development of iron based shape memory alloys (Fe-Mn-Si-SMAs) is their elegant advantages [10,11,[15][16][17].…”

Section: Literature Reviewmentioning

confidence: 99%

Comparative study on the effect of samarium additions on thermo-mechanical behaviour of shape memory alloys

Thomas

Dhandabani

Chandran³

2018

Matériaux & Techniques

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In the present work, a comparative study of the shape memory and thermo-mechanical behaviour of four alloys containing different amount of samarium have been carried out at a strain rate of 0.08 × 10-6s-1. After hot rolling, annealing and solution treatment, the alloy samples were tensile deformed at room temperature from 1% to 5% and were then recovered at 600 °C for 20 minutes repeatedly for six times to complete six training cycles. It is found that thermo-mechanical treatment (training) results in improvement of shape memory effect and has a significant influence on mechanical parameters like proof stress (σ: 0.002), critical stress (σ: 0.0008) and strain hardening exponent. The improvement in shape memory effect by thermo-mechanical treatment can be regarded as the effect of reduction in the values of proof stress and critical stress during training which facilitates the formation of ε (martensite). It has also been noticed that excessive training may result in the formation of ά (martensite) due to continuous softening of the alloy during training, thus degrading the shape memory effect. Finally, it has also been noticed that the addition of samarium increases the values of proof stress, critical stress and strain hardening exponent. Although the addition of samarium increases the values of proof stress, critical stress and strain hardening exponent yet it has not an adverse effect on shape memory effect. In this paper, the effect of thermo-mechanical treatment on mechanical parameters such as proof stress, critical stress, strain hardening exponent and their influence on shape memory effect is discussed.

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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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The corrosion behaviour of Fe–15Mn–7Si–9Cr–5Ni shape memory alloy

Cited by 27 publications

References 13 publications

Surface treatment and corrosion behaviour of Fe–32Mn–6Si shape memory alloy

Surface treatment and corrosion behaviour of Fe–32Mn–6Si shape memory alloy

Comparative study on the effect of samarium additions on thermo-mechanical behaviour of shape memory alloys

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

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