Author: B. A. Cheadle
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Category :
Languages : en
Pages : 0
Book Description
A proposal to irradiate zirconium alloys to determine the effect of neutron irradiation on phase transformations
Author: B. A. Cheadle
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Category :
Languages : en
Pages : 0
Book Description
Publisher:
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Category :
Languages : en
Pages : 0
Book Description
Irradiation-induced Phase Transformations in Zirconium Alloys
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Category :
Languages : en
Pages :
Book Description
[Sup 40]Ar and [sup 209]Bi ion irradiations of Zr[sub 3]Fe were performed at 35--725 K using 15-1500 keV ions. Results are presented on role of deposited-energy density on nature of the damaged regions in individual cascades produced by ion bombardment of Zr[sub 3]Fe. Comparison is also made between irradiation-induced amorphization of Zr[sub 3]Fe during electron irradiation and under ion bombardments. Dependence of damage production on incident electron energy in Zr[sub 3]Fe was also determined. Preliminary results are also discussed for amorphization of ZrFe[sub 2], Zr(Cr, Fe)[sub 2] and ZrCr[sub 2] by electron irradiation. Results of a recent investigation on amorphization of Zr(Cr, Fe)[sub 2] and Zr[sub 2](Ni, Fe) precipitates in Zircaloy-4 are discussed in context of previous experimental results of neutron and electron irradiations and likely amorphization mechanisms are proposed.
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Category :
Languages : en
Pages :
Book Description
[Sup 40]Ar and [sup 209]Bi ion irradiations of Zr[sub 3]Fe were performed at 35--725 K using 15-1500 keV ions. Results are presented on role of deposited-energy density on nature of the damaged regions in individual cascades produced by ion bombardment of Zr[sub 3]Fe. Comparison is also made between irradiation-induced amorphization of Zr[sub 3]Fe during electron irradiation and under ion bombardments. Dependence of damage production on incident electron energy in Zr[sub 3]Fe was also determined. Preliminary results are also discussed for amorphization of ZrFe[sub 2], Zr(Cr, Fe)[sub 2] and ZrCr[sub 2] by electron irradiation. Results of a recent investigation on amorphization of Zr(Cr, Fe)[sub 2] and Zr[sub 2](Ni, Fe) precipitates in Zircaloy-4 are discussed in context of previous experimental results of neutron and electron irradiations and likely amorphization mechanisms are proposed.
Scientific and Technical Aerospace Reports
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Category : Aeronautics
Languages : en
Pages : 256
Book Description
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Category : Aeronautics
Languages : en
Pages : 256
Book Description
Effect of Stress on Radiation Damage in Neutron Irradiated Zirconium Alloys
Author: CE. Coleman
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Category : Electron microscopy
Languages : en
Pages : 19
Book Description
Structures developed in zirconium alloys during irradiation creep have been characterized by transmission electron microscopy (TEM). Alloys investigated were annealed Zircaloy-2, cold-worked Zircaloy-2 and cold-worked Zr-2.5Nb pressure tube material. Thin films were taken from material deformed in the NRU, NRX and Pickering-3 reactors at temperatures of 530 to 600 K under stresses of 117 to 552 MPa giving strains in the range 0.14 to 8.8 percent. Stress-induced orientation of dislocation loops makes a negligible contribution to irradiation creep at all stresses. At the lower stresses (and hence strains), the size and distribution of the damage is unaffected by stress, being the same in the head and gage sections of creep specimens. At higher stresses (strains), there is much clearing of the damage by plastic deformation. The deformation however is very uneven, producing structures in different grains of the same specimen that can show no deformation, swaths cleared of irradiation damage, or dislocation tangles or cell formation. The relevance of these TEM observations to irradiation creep mechanisms is discussed.
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Category : Electron microscopy
Languages : en
Pages : 19
Book Description
Structures developed in zirconium alloys during irradiation creep have been characterized by transmission electron microscopy (TEM). Alloys investigated were annealed Zircaloy-2, cold-worked Zircaloy-2 and cold-worked Zr-2.5Nb pressure tube material. Thin films were taken from material deformed in the NRU, NRX and Pickering-3 reactors at temperatures of 530 to 600 K under stresses of 117 to 552 MPa giving strains in the range 0.14 to 8.8 percent. Stress-induced orientation of dislocation loops makes a negligible contribution to irradiation creep at all stresses. At the lower stresses (and hence strains), the size and distribution of the damage is unaffected by stress, being the same in the head and gage sections of creep specimens. At higher stresses (strains), there is much clearing of the damage by plastic deformation. The deformation however is very uneven, producing structures in different grains of the same specimen that can show no deformation, swaths cleared of irradiation damage, or dislocation tangles or cell formation. The relevance of these TEM observations to irradiation creep mechanisms is discussed.
Proceedings of the USAEC Symposium on Zirconium Alloy Development, Castlewood, Pleasanton, California, November 12-14, 1962
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Category : Zirconium alloys
Languages : en
Pages : 428
Book Description
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Category : Zirconium alloys
Languages : en
Pages : 428
Book Description
Mechanical Properties of Irradiated Zirconium, Zircaloy, and Aluminum
Author: Richard E. Schreiber
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Category : Aluminum alloys
Languages : en
Pages : 112
Book Description
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Category : Aluminum alloys
Languages : en
Pages : 112
Book Description
Nuclear Science Abstracts
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Category : Nuclear energy
Languages : en
Pages : 1292
Book Description
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Category : Nuclear energy
Languages : en
Pages : 1292
Book Description
Reactor Materials
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Category : Nuclear reactors
Languages : en
Pages : 316
Book Description
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Category : Nuclear reactors
Languages : en
Pages : 316
Book Description
Proposal to measure the irradiation growth of various zirconium alloys and the effect of compressive stress on the growth of tubular specimens of zr-2.5 wt percent nb inside the NRX mark vi fast neutron rod
Author: V. Fidleris
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Category :
Languages : en
Pages : 0
Book Description
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Category :
Languages : en
Pages : 0
Book Description
Physics Briefs
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Category : Physics
Languages : en
Pages : 916
Book Description
Publisher:
ISBN:
Category : Physics
Languages : en
Pages : 916
Book Description