Results 261 to 270 of about 23,999 (306)

The hardening and embrittlement of steel by irradiation with neutrona

Philosophical Magazine, 1957
The tensile yield and fracture strengths of a structural steel have been measured before and after irradiation with neutrons. The fracture strength increases with irradiation at the same rate as the yield strength and the embrittlement cannot be ascribed to a loss of cohesive strength.
A. T. Churchman, I. Mogford, A. H. Cottrell   +2 more
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Surface hardening by proton irradiation

Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1993
Abstract Ion implantation induced changes in the microhardness of semiconductor materials are systematically studied in AIII BV, AIIBVI and elemental semiconductors. The influences of different types of radiation defects and of implanted atoms are separately considered.
openaire   +1 more source

The surface hardening of X-irradiated NaCl

Acta Metallurgica, 1959
Abstract The increase in Vickers hardness due to exposure of NaCl single crystals to 40 kV unfiltered X-rays is studied both as a function of irradiation time and of depth, i.e. the distance from the surface facing the beam. The optical absorption was also measured, as a function of these variables, on the same crystals in order to find a possible ...
E Aerts, S Amelinckx, W Dekeyser
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A statistical model of irradiation hardening induced by non-periodic irradiation defects

Scripta Materialia, 2021
Abstract Numerous efforts have been made to develop the irradiation hardening models, due to their important role in nuclear reactor design and service lifetime prediction. Most of the models are based on the dislocation line tension approximation, by assuming a periodic array of irradiation defects.
Wei Cui, Yinan Cui, Wei Liu
openaire   +1 more source

Irradiation hardening of V–4Cr–4Ti

Journal of Nuclear Materials, 1999
Abstract In the framework of the European Long Term Fusion Technology Program, Advanced Materials Field, ECN has been working on the assessment of low temperature irradiation hardening and embrittlement of vanadium alloys, as being developed for fusion application.
E.V van Osch, M.I de Vries
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Irradiation Hardening and Deformation

2016
Exposure of metals to irradiation results in an increase in the yield strength over a wide temperature range and is most pronounced at T irr < 0.3T m. Typical engineering stress–stress curves for fcc and bcc steels are shown in Fig. 12.1. Note that for both crystal structures, in addition to increasing the yield strength, the ductility (measured either
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Hardening of copper irradiated at −195°C

Acta Metallurgica, 1961
Copper single crystals harden during neutron irradiation at −195°C and it is known that some recovery of this hardening (~ 10 per cent) occurs on annealing in the temperature range 0°–20°C, suggesting that the defects which become mobile at this temperature annihilate part of the damage responsible for the hardening.
M.J. Makin, S.A. Manthorpe
openaire   +1 more source

Irradiation hardening of Fe-Cr alloys

Journal of Nuclear Materials, 1983
Abstract The mechanism of irradiation hardening of Fe and Fe-Cr simple α-phase alloys was studied by means of tensile tests. Some commercial ferritic and martensitic steels were also examined. The irradiation hardening of Fe was explained by the presence of small dislocation loops formed at the sites of cascade damage collapse, while that of Fe-Cr ...
Katsuaki Suganuma, Hideo Kayano
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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
openaire   +1 more source