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Amorphization kinetics of Zr(Cr, Fe)₂ under ion irradiation epub

by A. T Motta


Amorphization kinetics of Zr(Cr, Fe)₂ under ion irradiation epub

ISBN: 0660158965

ISBN13: 978-0660158969

Author: A. T Motta

Category: No category

Language: English

Publisher: AECL Research (1994)

ePUB book: 1247 kb

FB2 book: 1780 kb

Rating: 4.8

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For Zr (Cr,Fe)2 precipitates the n was found to. .The manipulation of the antiferromagnetic interlayer coupling in epitaxial Fe/Cr/Fe(001) trilayers by 5 keV He ion beam irradiation has been investigated.

For Zr (Cr,Fe)2 precipitates the n was found to increase exponentially with temperature, with a critical temperature of about 650 K. The amorphization morphology was shown to be homogeneous, with no preferential site for nucleation, in contrast to neutron-irradiation amorphization which started at the precipitate-matrix interface. It is shown that even for irradiation with low fluences a drastic change in strength of the coupling appears.

For Zr (Cr,Fe)2 precipitates the n was found to increase exponentially with temperature, with a critical . 6. Motta, A. Olander, D. R. and Machiels, A. J. in Effects of Irradiation on Materials; 14th International Symposium, (Packan, N. Stoller, R. E. and Kumar, A. Eds), ASTM STP 1046, 457 (1991). 7. Gilbert, R. Griffiths, . Carpenter, G. Nue. Mat. 135, 265, (1985).

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For Zr (Cr, Fe)2 precipitates the n was found to increase exponentially with temperature, with a critical temperature of about 650 K. The amorphization . Howe, L. & Okamoto, P. (1993). Amorphization kinetics of Zr (Cr, Fe)2 under ion irradiation. For Zr2 (Ni, Fe) precipitates it was found that amorphization occurred at 550 K and 600 K, whereas in neutron irradiation no amorphization has been observed at those temperatures.

on the -induced amorphization of Zr3Fe.

In paper a new model for the kinetics of phase transformations under electron irradiation was developed. We apply it to consider the -induced amorphization as a particular case. 2) Using criterion (2), the critical electron flux, needed for amorphization at a certain temperature, and the irradiation dose required for amorphization are derived. The formulae derived are applied to fit the experimental results on the -induced amorphization of Zr3Fe. Russell, Problems of Atomic Science and Technology 4(87) (2005) 108.

Amorphization of particles of the Fe2Zr intermetallic phase as a result of low-temperature treatment of the .

Amorphization of particles of the Fe2Zr intermetallic phase as a result of low-temperature treatment of the alloy with nitrogen ions at 520–600 K has been found.

Amorphization kinetics of Zr(Cr,Fe) under ion irradiation. Conference Motta, . For Zr (Cr, Fe) precipitates the n was found to increase exponentially with temperature, with a critical temperature of about 650 K.

The amorphization of Zr2Cu is found under irradiation to 10 dpa, and its transformation temperature is found to be between . Amorphization kinetics of Zr3Fe under electron irradiation.

The amorphization of Zr2Cu is found under irradiation to 10 dpa, and its transformation temperature is found to be between 200 °C to 300 °C, whereas amorphization of β–Nb is not detected at any temperature, including as low as 100 °C. (2). The surrounding microstructure has significant effects on the precipitate stability. Nagase, . Umakoshi, Y. Phase stability of amorphous and crystalline phases in melt-spun Zr66. 3 alloy under electron irradiation.

For intermetallic compounds, Motta notes that irradiation-induced amorphization is primarily a low-temperature .

For intermetallic compounds, Motta notes that irradiation-induced amorphization is primarily a low-temperature phenomenon, and, as such, is generally not a concern for structural alloys in nuclear environments. 9 indicates that the critical amorphization temperature of ion irradiation (denoted by green and darker green lines, respectively, for light ion vs heavy ion irradiation) is higher than that of neutrons, which are typically at much lower dose rates than ion irradiation.

However, under very high-energy irradiation by . 3 GeV U-238, nanocrysta. Bulk ZrO2 polymorphs generally have an extremely high amorphization tolerance upon low energy ion and swift heavy ion irradiation in which ballistic interaction and ionization radiation dominate the ion–solid interaction, respectively. However, under very high-energy irradiation by . 3 GeV U-238, nanocrystalline (40–50 nm) monoclinic ZrO2 can be amorphized.