..., and welds with a variety of chemical compositions, were irradiated in the BR2 reactor to a neutron fluence ranging from ∼3 to ∼9 × 10 19 n/cm², E >1 MeV at lower-than-usual irradiation temperatures (∼100 and 150°C) complemented with medium- to high-temperature irradiation data (260, 290, and 305°C...

... of irradiation environment on the embrittlement trends of Linde 80 submerged-arc welds based on mechanical test data available through the B&WOG and the literature, and existing trend curves. submerged-arc welds reactor vessel radiation embrittlement irradiation temperature Matthew J. DeVan I...

... of the results imply the importance of the balance between damage production and recovery. polycrystalline silicon in-situ TEM observation preferential amorphization ions mass energy irradiation temperature Mitsuhiro Takeda,l S. Ohmlki, 1T. Slltda~ l S. Watanebe, l H. Abe, 2 and I. Nashiyama2...

... angle neutron scattering microstructure irradiation temperature Mirco GrosseI and Jtirgen BiShmert2 Irradiation Damage Structure in VVER-440 Steels after Irradiation at Different Temperatures and Post-Irradiation Annealing Reference: Grosse, M. and B6hmert, J., "Irradiation Damage Structure in VVER...

... modeling hardening embrittlement point defect clusters copper precipitates irradiation temperature displacement rate Roger E. Stoller ~ PRESSURE VESSEL EMBRITTLEMENT PREDICTIONS BASED ON A COMPOSITE MODEL OF COPPER PRECIPITATION AND POINT DEFECT CLUSTERING REFERENCE: Stoller, R. E., "Pressure...

... hardening corresponds to nominal maximum end-of-life transition temperature shifts in support structure steels of about 120°C. pressure vessel steels irradiation hardening irradiation embrittlement composition effects irradiation temperature G. R. Odette 1, G. E. Lucas 1, R. D. Klingensmith 1...

... at different temperatures. As hardening and embrittlement arise from the sum of matrix damage and copper impurity precipitation, the influence of irradiation temperature on each process needs to be established. For irradiations performed below ~300°C recent data shows that the dose-dependent growth of copper...

... irradiation temperature. These changes in the crack velocity by neutron irradiation are explained in terms of the combined effects of irradiation hardening associated with increased <a>-type dislocation density, and β-phase decomposition. While the former process increases crack velocity, the latter...

... [0.8 × 10 18 neutrons/cm 2 (>1 MeV)]. The yield and ultimate strengths of both A 533 grade B class 1 plate materials of the MHTGR program increased with decreasing irradiation temperature. Similarly, the 41-J CVN transition temperature shift increased with decreasing irradiation temperature...

... Reactor at Oak Ridge National Laboratory to fluences ranging from about 4 to 12 × 10 18 neutrons/cm 2 (>1 MeV). Charpy V-notch and tensile specimens were included in the capsules at available locations which were subject to wide variations in irradiation temperature and fluence. This paper presents...

... The influence of irradiation temperature and displacement rate on point defect cluster formation has been investigated using a kinetic model. The model considers both interstitial and vacancy clustering; the former are treated as Frank loops and the latter as microvoids. Clusters can form...

... dpa at an irradiation temperature of420°C. Irradiation-induced precipitates of α′, chi, and M 2 X phases have been observed and characterized. The largest strengthening and embrittlement of the steel were found after irradiation at T < 350°C. For dislocation loops, voids, and α′-particles...

... toughness tearing modulus irradiation temperature inclusion weld Yutaka Nishiyama, ~Kiyoshi Fukaya, ~Masahide Suzuki, ~ Tsuneo Kodaira, ~and Tatsuo Oku 2 Evaluation of Irradiation Embrittlement of 288 Steel in Terms of Elastic-Plastic Fracture Toughness REFERENCE: Nishiyama, Y., Fukaya, K., Suzuki, M...

... over a range of temperatures and fluence values. These specimens were grouped by the irradiation temperature and fluence so as to minimize the standard deviation value for both properties. The upper-shelf energy, the 30-ft-lb (40.7-J) transition temperature, and the 50-ft-lb (67.8-J) transition...

... on annealed Zircaloy-2. irradiation growth iodide zirconium Zircaloy-2 texture grain size irradiation temperature interstitial loops and clusters vacancy trapping irradiation-induced stress relief dislocation climb growth saturation breakaway growth Allan Rogerson^ Irradiation-Induced...

... steel, and thermal activation of the radiation damage. neutron irradiation mild steels interstitial elements nitrogen radiation hardening strain ageing tension tests recovery heat treatment neutron dose irradiation temperature dynamic strain ageing thermally activated flow. E...