Precipitation and hardening behaviour of the Fe20Co18W alloy aged at 800 °C

Galimberti, P.; Lay, S.; Antoni‐Zdziobek, A.; Coindeau, S.; Véron, M.; Bley, F.; Boissieu, M. de

doi:10.1016/j.intermet.2010.12.007

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…It is observed that they do not fit with the R phase. This result is not surprising: from previous work in the FeeCoeW system, it was observed that a signal arising from nanometric intermetallic precipitates was barely detected by XRD [40]. The peaks of the precipitated phase are likely provided by the intergranular precipitates.…”

Section: Fe27co8mo Alloy Aged At 600 Csupporting

confidence: 54%

“…9). It is to note that such domains were also revealed from high resolution transmission electron images in the Fe20Co18W alloy annealed at 800 C for a short time but not detected on the XRD profiles [40]. The formation of these ordered domains that would be a consequence of Co addition should affect the hardness behaviour of the alloy.…”

Section: Fe27co8mo Alloy Aged At 600 Cmentioning

confidence: 95%

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Precipitation and age-hardening in the Fe–27Co–8Mo alloy

2012

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Section: Fe27co8mo Alloy Aged At 600 Csupporting

confidence: 54%

Section: Fe27co8mo Alloy Aged At 600 Cmentioning

confidence: 95%

Precipitation and age-hardening in the Fe–27Co–8Mo alloy

2012

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“…It is worth noting that the lattice parameters are much higher than the standard lattice parameters with the change in the content of W. From the position of the peak, it can be inferred that the lattice parameters are 0.2870 nm, 0.2878 nm and 0.2877 nm, respectively ( Table 2 ). Compared to the standard lattice parameters at 0.2866 nm [ 24 ], the formation of the solid solution of FeCrCoW may be emphasized. The bonding force between is determined by the melting point of the alloy.…”

Section: Resultsmentioning

confidence: 99%

The Effect of W Content on the Microstructure, Mechanics and Electrical Performance of an FeCrCo Alloy

Wang

Zhang

Liu³

et al. 2023

Materials

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In this paper, FeCrCoW alloys with different W contents (0.4, 2.1 and 3.4 at%) are designed and studied in order to overcome the existing shortcomings of resistance materials. These resistance materials have high resistivity and a low temperature coefficient of resistivity. It is observed that the addition of W has a remarkable effect on the phase structure of the alloy. In particular, when the W content is 3.4 at%, the single BCC phase of the alloy can be transformed into the BCC and FCC phase. Meanwhile, when analyzed by transmission electron microscopy, there are stacking faults and martensite in FeCrCoW alloy with W content of 3.4 at%. These features are related to excessive W content. In addition, the strength of the alloy can be improved, and the ultimate tensile strength and yield strength are both very high, which are considered as grain-boundary strengthening and solid solution strengthening, caused by the addition of W. The electrical resistivity of the FeCrCoW alloys decreases when the content of W is more than 2.1 at%. The maximum resistivity of the alloy is 170 ± 1.5 μΩ·cm. Moreover, the unique properties of the transition metal allow the alloy to have a low temperature coefficient of resistivity in the temperature range of 298~393 K. The temperature coefficient of resistivity values of the W0.4, W2.1 and W3.4 alloys are −0.0073, −0.0052 and −0.0051 ppm/K. Therefore, this work provides a vision for resistance alloys, which can achieve highly stable resistivity and high strengths in a certain temperature range.

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“…The common characteristics of rare earth magnetic materials are high saturation magnetization (Ms), Curie temperature (Tc), and magnetic anisotropy field (H k ), particularly. In general, the addition of rare-earth (RE) elements to CoFe alloy can improve its hardness, corrosion resistance, and durability, as well as improve heat resistance and other benefits [ 8 , 9 , 10 ]. Due to their widespread use in numerous applications, including spintronic, fiber amplifier, photoluminescence, and laser, RE element-doped nanomaterials have become the center of interest.…”

Section: Introductionmentioning

confidence: 99%

Effect of Annealing and Thickness of Co40Fe40Yb20 Thin Films on Various Physical Properties on a Glass Substrate

Liu

Chang

Chiang³

et al. 2022

Materials

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The aim of this work is to investigate the effect of annealing and thickness on various physical properties in Co40Fe40Yb20 thin films. X-ray diffraction (XRD) was used to determine the amorphous structure of Co40Fe40Yb20 films. The maximum surface energy of 40 nm thin films at 300 °C is 34.54 mJ/mm2. The transmittance and resistivity decreased significantly as annealing temperatures and thickness increased. At all conditions, the 10 nm film had the highest hardness. The average hardness decreased as thickness increased, as predicted by the Hall–Petch effect. The highest low-frequency alternative-current magnetic susceptibility (χac) value was discovered when the film was annealed at 200 °C with 50 nm, and the optimal resonance frequency (ƒres) was in the low frequency range, indicating that the film has good applicability in the low frequency range. At annealed 200 °C and 50 nm, the maximum saturation magnetization (Ms) was discovered. Thermal disturbance caused the Ms to decrease when the temperature was raised to 300 °C. The optimum process conditions determined in this study are 200 °C and 50 nm, with the highest Ms, χac, strong adhesion, and low resistivity, which are suitable for magnetic applications, based on magnetic properties and surface energy.

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Precipitation and hardening behaviour of the Fe20Co18W alloy aged at 800 °C

Cited by 6 publications

References 21 publications

Precipitation and age-hardening in the Fe–27Co–8Mo alloy

Precipitation and age-hardening in the Fe–27Co–8Mo alloy

The Effect of W Content on the Microstructure, Mechanics and Electrical Performance of an FeCrCo Alloy

Effect of Annealing and Thickness of Co40Fe40Yb20 Thin Films on Various Physical Properties on a Glass Substrate

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