Results 151 to 160 of about 1,250 (204)

Irradiation embrittlement of neutron-irradiated ferritic steel

Journal of Nuclear Materials, 1985
Abstract In this study three kinds of Fe-Cr ferritic steels were examined by the instrumented Charpy test and tensile test before and after JMTR irradiation ( 2.2×10 23 f.n./m 2 ). In the unirradiated samples, 100%-martensite 5Cr-2Mo steel showed the highest adsorbed energy and the highest toughness at low temperatures, follewed by ...
H. Kayano   +3 more
openaire   +1 more source

Embrittlement of irradiated F82H in the absence of irradiation hardening

Journal of Nuclear Materials, 2009
Abstract Neutron irradiation of 7–12% Cr ferritic/martensitic steels below 425–450 °C produces microstructural defects and precipitation that cause an increase in yield stress. This irradiation hardening causes embrittlement, which is observed in a Charpy impact or fracture toughness test as an increase in the ductile-brittle transition temperature ...
R.L. Klueh, K. Shiba, M.A. Sokolov
openaire   +1 more source

A regulatory view of irradiation embrittlement

International Journal of Pressure Vessels and Piping, 1993
Abstract This paper indicates where, in the view of the authors, the main uncertainties lie in assessing the safety of nuclear plant subject to irradiation embrittlement. The estimation and evaluation of adequate safety margins are also discussed. The paper advocates the establishment of agreed ground rules for prescribing safe operating rules and ...
F.M.D. Boydon, B. Hemsworth
openaire   +1 more source

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   +2 more
openaire   +1 more source

Irradiation-induced embrittlement of a 2.25Cr1Mo steel

Journal of Nuclear Materials, 2000
Irradiation-induced embrittlement of a 2.25CrlMo is investigated by means of small punch testing and scanning electron microscopy (SEM). The ductile-brittle transition temperature (DBTT) determined by the small punch test is much lower than that determined by the standard Charpy test.
Song, S. H.   +5 more
openaire   +1 more source

Mitigation of Irradiation Embrittlement by Annealing

1996
The main results of a complex investigation carried out in Russia of post irradiation annealing and reembrittlement of WWER-440 reactor pressure vessel materials are presented. The dependence of the Charpy transition temperature recovery on annealing temperature and fluence was established. Charpy specimens were reirradiated after annealing at 340, 380,
AD Amayev   +4 more
openaire   +1 more source

Irradiation-induced embrittlement of magnox cans

Radiation Effects, 1972
Abstract The creep ductility of Magnox AL80 (Mg/0.8 wt per cent A1/0.005 wt per cent Be) fuel element cans is known to decrease with increasing irradiation. A possible cause of this embrittlement is void nucleation at inert gas bubbles formed on grain boundaries.
G. B. Gibbs, J. E. Harris
openaire   +1 more source

The effect of chemical composition on irradiation embrittlement

Nuclear Engineering and Design, 1990
The Japanese Pressurized Thermal Shock (PTS) integrity study is now being conducted by the Japan Power Engineering and Inspection Corporation (JAPEIC) under contract with the Ministry of International Trade and Industry (MITI). This paper introduces the study plan and the interim results on irradiation embrittlement of reactor pressure vessel steels.
S. Ishino   +3 more
openaire   +1 more source

The embrittlement of molybdenum by neutron irradiation

Philosophical Magazine, 1960
To determine if the same type of irradiation embrittlement which Hull and Mogford observed in EN/sub 2/ steel occurred in other body-centered cubic metals, their method was applied to molybdenum. Twenty molybdenum tensile, specimens, each having a different grain size, were prepared.
openaire   +1 more source

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