The effects of Cr on isothermal oxidation behavior of Fe–30Mn–6Si alloy

Balo, Ş. Nevin; Yakuphanoğlu, F.

doi:10.1016/j.tca.2013.03.005

Cited by 16 publications

(6 citation statements)

References 15 publications

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“…They have shown strong potentials for use as fasteners and pipe couplings [4 -7], solid-state actuators [5,8 -10] and in civil engineering applications [11,12]. Understanding the corrosion properties of Fe-based SMAs attracted several studies in the early 1990s [13,14] with the main focus being to improve their corrosion resistance through additions of alloying elements such as Cr, Al, Ni, Mn, Cu, Si, N and RE [13,15 -24]. Although some of the Fe-based SMAs, such as Fe–Mn–SiCr–Ni alloys showed improved corrosion resistance in different solutions, their commercial application was still very limited due to their non-thermoelstic martensitic transformation [25,26], resulting in poor superelasticity at room temperature [2,6,27 -29].…”

Section: Introductionmentioning

confidence: 99%

An investigation of the corrosion behaviour of a FeNiCoAlTa shape memory alloy in 3.5 wt-% NaCl solution

Farhat

Griffin

Oguocha

et al. 2018

Corrosion Engineering, Science and Technology

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In this study, the corrosion behaviour of an FeNiCoAlTa (NCAT) shape memory alloy in 3.5% (w w −1 ) NaCl solution was evaluated. Linear polarisation resistance and potentiodynamic polarisation tests were conducted at 25°C. An open circuit potential (OCP) of −381 mV (vs. saturated calomel reference electrode) and a corrosion rate (CR) of 0.0174 mm y −1 were obtained. The NCAT alloy did not show any passivation in the 3.5% (w w −1 ) NaCl solution. Its corrosion behaviour was very similar to that of G10180 (AISI 1018) carbon steel with the NCAT showing a lower CR and a less active OCP. Its corrosion in the solution was a combination of general dissolution and localised attack (pitting). Aging heat treatment caused β-Ni 3 Al phase, and tantalum to precipitate on the grain boundaries, resulting in chemical species segregation between the grain boundaries and the grains. The chemical segregation caused intergranular corrosion of the alloy.

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Section: Introductionmentioning

confidence: 99%

An investigation of the corrosion behaviour of a FeNiCoAlTa shape memory alloy in 3.5 wt-% NaCl solution

Farhat

Griffin

Oguocha

et al. 2018

Corrosion Engineering, Science and Technology

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show abstract

“…The crystallite size for the alloy samples were calculated using the Debye Scherrer equation [31][32][33]:…”

Section: X-ray Diffraction (Xrd) Resultsmentioning

confidence: 99%

Effect on Thermal and Structural Properties of Element Content in CuAlBe Shape Memory Alloys Irradiated with a Constant Gamma Radiation Dose

Balo

ORHAN²

2023

Turkish Journal of Science and Technology

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Shape memory alloys with two different weight percentages of CuAlBe were irradiated with a 40 kGy constant gamma radiation dose, and the resulting thermal and structural changes in the alloys were examined. Changes in enthalpy and in the transformation temperature of the alloys were determined by differential scanning calorimetry (DSC), and thermodynamic parameters of alloy samples were calculated. Microstructural changes were determined by X-ray analysis. Microstructural changes were verified by metallographic observations, and microhardness measurements were taken. The study investigated to what extent the physical parameters of CuAlBe shape memory alloys changed depending on the alloying elements when subjected to a constant irradiation dose.

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“…According to NevioBalo and Arrhenius [30], the relationship between parabolic rate constant (K p ) and activation energy can be expressed by Eq. (3):…”

Section: Resultsmentioning

confidence: 99%

Effect of Cr Content on the High Temperature Oxidation of Low Alloy Steels

Kwon

Park

Choi

et al. 2023

Preprint

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In the case of low carbon steel (AISI 1015, AISI 8617, AISI 4115 steel), the high-temperature oxidation behavior at different temperatures (600, 700, 800, 900, 1000 ℃) was studied by mass gain analysis, phase analysis (metallographic microscope, energy-dispersive spectroscopy, and x-ray diffraction). The oxidation process was performed from 2 to 100 min. As the oxidation time increased, the trend of mass gain per unit area switched from linear to parabolic law regardless of steel grades used in this study. As the chromium content increases, the duration of time during which the oxidation rate follows a linear relationship decreases. The structure of oxides can generally be classified into two types: outer oxide and inner oxide. The outward diffusion of Fe cations primarily leads to the formation of outer oxide, while the inward diffusion of O anions is responsible for the formation of chromium and inner oxides. In the low-alloy steel with higher chromium content, the thickness of the mixed oxide layer containing Cr increased, and the oxidation rate decreased at all oxidation temperatures.

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The effects of Cr on isothermal oxidation behavior of Fe–30Mn–6Si alloy

Cited by 16 publications

References 15 publications

An investigation of the corrosion behaviour of a FeNiCoAlTa shape memory alloy in 3.5 wt-% NaCl solution

An investigation of the corrosion behaviour of a FeNiCoAlTa shape memory alloy in 3.5 wt-% NaCl solution

Effect on Thermal and Structural Properties of Element Content in CuAlBe Shape Memory Alloys Irradiated with a Constant Gamma Radiation Dose

Effect of Cr Content on the High Temperature Oxidation of Low Alloy Steels

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