Results 261 to 270 of about 5,873 (297)

Hardening of Lithium Fluoride Crystals by Irradiation

Journal of Applied Physics, 1961
The very soft, pure crystals of LiF that are now commercially available are unsuitable for some experimental work because they suffer accidental plastic deformation during cleavage and tend to split on (110) planes. Irradiation with gamma rays produces harder crystals that can be cleaved and handled without much damage.
J. S. Nadeau, W. G. Johnston
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Numerical simulation of irradiation hardening in Zirconium

Journal of Nuclear Materials, 2013
Abstract A phase field model is developed to simulate interactions between gliding dislocations and irradiation induced damage loops (i.e., vacancy and self-interstitial loops) in Zirconium. Pinning contact interactions and long-range elastic interactions are simulated, with populations of defects generated based on experimental observations of ...
A. Boyne, C. Shen, R. Najafabadi, Y. Wang   +3 more
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The hardening of lithium fluoride by electron irradiation

Philosophical Magazine, 1960
Abstract A study has been made of the effect of 1 MeV electron irradiation on the mechanical properties of lithium fluoride single crystals tested in compression. The yield point, σ has been shown to vary with the irradiation dose, φ, according to the law σ=σ u +A[1-exp (-Bφ)]1/2, where σ u , A and B are constants.
A. D. Whapham, M. J. Makin
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Embrittlement of irradiated ferritic/martensitic steels in the absence of irradiation hardening

Journal of Nuclear Materials, 2008
Irradiation damage caused by neutron irradiation below 425–450 C of 9–12% Cr ferritic/martensitic steels produces microstructural defects that cause an increase in yield stress. This irradiation hardening causes embrittlement observed in a Charpy impact test as an increase in the ductile–brittle transition temperature.
R.L. Klueh, K. Shiba, M.A. Sokolov
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Evaluation of irradiation hardening of proton irradiated stainless steels by nanoindentation

Journal of Nuclear Materials, 2014
Abstract Ion irradiation experiments are useful for investigating irradiation damage. However, estimating the irradiation hardening of ion-irradiated materials is challenging because of the shallow damage induced region. Therefore, the purpose of this study is to prove usefulness of nanoindentation technique for estimation of irradiation hardening ...
Kiyohiro Yabuuchi, Yutaka Kuribayashi, Shuhei Nogami, Ryuta Kasada, Akira Hasegawa   +4 more
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Discussion of “Irradiation hardening in copper and nickel”

Acta Metallurgica, 1961
Direct evidence that the value of sigma /sub i/ determined by extrapolation differs considerably from that obtained by determining sigma /sub L//sub y//sub P/ as a function of grain size is discussed. Possible causes for the differences in the derived values of sigma /sub i/ and K/sub y/ are suggested.
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Irradiation hardening and microstructure evolution of ion-irradiated Zr-hydride

Journal of Nuclear Materials, 2011
Abstract 6.4 MeV Fe 3+ ion irradiation was applied to a e-Zr-hydride to clarify the relation between the hardening and the microstructure change of bulk Zr-hydrides under neutron irradiation. Irradiation hardening was measured by nano-indentation test.
Naoko Oono, Ryuta Kasada, Toru Higuchi, Kan Sakamoto, Masafumi Nakatsuka, Akiko Hasegawa, Sosuke Kondo, Hideki Matsui, Akihiko Kimura   +8 more
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Annealing of hardening in copper after neutron irradiation hardening at 77 K

Journal of Nuclear Materials, 2001
Abstract The stress–strain curves corresponding to single crystals of Cu irradiated and measured at 77 K revealed the onset of an upper and a lower yield point at fluences higher than 0.5×10 21 n m −2 (E>0.5 MeV), which will be referred to as the critical fluence, (φt)C.
H.C González, M.T Miralles
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Post-yield strain hardening behavior as a clue to understanding irradiation hardening

Journal of Nuclear Materials, 1998
We analyze the post-yield true-stress vs. true-strain flow behavior of neutron and electron irradiated reactor pressure vessel steels, A212B and A350, and binary alloys, Fe-0.28 Cu and Fe-0.74 Ni. The flow curves suggest that neutron-irradiation hardening has the same effect as strain hardening for all the materials examined. The post-yield flow curves,
R.J. DiMelfi, D.E. Alexander, L.E. Rehn
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Irradiation softening and hardening of Ni3Al

Scripta Metallurgica, 1968
Kanji Ono, K.R. Nelson
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