Effect of pulsed photon irradiation on the formation of a nanocrystalline structure in Fe-Pb-Nb amorphous alloys

Vavilova, V. V.; Иевлев, В. М.; Kalinin, Yu. E.; Kushchev, S. B.; Darinskii, B. M.; Palii, N. A.; Pokazan’eva, S. A.; Yudin, L. Yu.

doi:10.1134/s0036029511050156

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…The average crystallite size of the Fe 3 P phase, which prevailed in both cases, was 43 nm after LP and 45 nm after HT, demonstrating that LP ensured a faster crystallization process, given that the processing time in the case of LP was two orders of magnitude shorter. The nature of this effect was discussed previously [16,17].…”

Section: Lp-and Ht-induced Structural Transformationsmentioning

confidence: 99%

Crystallization behavior, mechanical properties, and corrosion resistance of an amorphous Fe76.5P13.6Si4.8Mn2.4V0.2C2.5 alloy

et al. 2016

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We have studied the mechanical properties and corrosion resistance of an amorphous Fe 76.5 P 13.6 Si 4.8 Mn 2.4 V 0.2 C 2.5 alloy and their response to nanocrystallization as a result of brief lamp processing and heat treatment. The results demonstrate that the lamp processing time needed to obtain a given phase composition through partial crystallization of the amorphous alloy is two orders of magnitude shorter than the corresponding heat treatment time. We have found lamp processing conditions that ensure the formation of an amorphous-nanocrystalline composite with a twofold increase in hardness, without loss of plasticity. It has been shown that, with increasing loading rate during nanoindentation, the hardness of the alloy decreases because of the increase in plasticity, which shows up as the formation of a larger number of shear bands. Under uniaxial tension, the material exhibits microplasticity, which may be due to intercluster sliding, with the amorphous structure retained. The corrosion resistance of the as-prepared amorphous alloy in a medium contaminated with sulfur dioxide exceeds that of the partially crystallized alloys.

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Section: Lp-and Ht-induced Structural Transformationsmentioning

confidence: 99%

Crystallization behavior, mechanical properties, and corrosion resistance of an amorphous Fe76.5P13.6Si4.8Mn2.4V0.2C2.5 alloy

et al. 2016

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“…The possible mechanisms behind the faster crystal lization of the amorphous alloy when the process is activated by lamp processing were discussed by Vavilova et al [3] and Darinskiy and Yudin [7]. The presence of 6 eV photons in the emission spectrum of xenon lamps plays a defining role in the activation of the atomic rearrangement during crystalline phase nucleation under conditions where no diffusion of constituent components is required.…”

Section: Structural Transformations Induced By Ht and Lpmentioning

confidence: 99%

“…In the vast majority of studies of amorphous alloy crystallization, conventional heat treatment (HT) has been used. At the same time, results of a number of studies demonstrate effectiveness of short term expo sure (for a fraction of a second to several seconds) of amorphous alloys to broadband light of high power gas discharge lamps [2][3][4][5]. The activation of solid state processes by flash lamp processing (FLP) shows up as an increase in synthesis rate, reduction in phase formation temperatures, and smaller particle size of forming phases owing to the higher nucleation rate [6,7].…”

Section: Introductionmentioning

confidence: 97%

Photoactivated nanocrystallization and hardness of Fe78P20Si2 alloy

et al. 2015

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The structural changes induced in an amorphous Fe 78 P 20 Si 2 alloy by heat treatment and lamp pro cessing have been compared using X ray diffraction. The results demonstrate that the main effect of the lamp processing is to increase the crystallization rate. Under nanoindentation conditions that do not lead to crys tallization under the action of a concentrated load (as verified by transmission electron microscopy), we have determined the hardness (8 ± 0.3 GPa) and Young's modulus (130 ± 10 GPa) of the amorphous alloy. Lamp processing conditions have been found that lead to the formation of an amorphous-nanocrystalline compos ite whose hardness is almost twice that of the parent amorphous alloy, without loss of plasticity.

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X-ray Diffraction and Differential Scanning Calorimetry of the Crystallization of Amorphous Soft Magnetic Alloys Made of Naturally Doped Ferrophosphorus with One (P), Two (P, Si), and Three (P, Si, C) Amorphizers

et al. 2020

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Effect of pulsed photon irradiation on the formation of a nanocrystalline structure in Fe-Pb-Nb amorphous alloys

Cited by 3 publications

References 4 publications

Crystallization behavior, mechanical properties, and corrosion resistance of an amorphous Fe76.5P13.6Si4.8Mn2.4V0.2C2.5 alloy

Crystallization behavior, mechanical properties, and corrosion resistance of an amorphous Fe76.5P13.6Si4.8Mn2.4V0.2C2.5 alloy

Photoactivated nanocrystallization and hardness of Fe78P20Si2 alloy

X-ray Diffraction and Differential Scanning Calorimetry of the Crystallization of Amorphous Soft Magnetic Alloys Made of Naturally Doped Ferrophosphorus with One (P), Two (P, Si), and Three (P, Si, C) Amorphizers

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