Download or read book Studies of Void Formation in Proton Irradiated Type 316 and Titanium Modified 316 Stainless Steels written by DW. Keefer and published by . This book was released on 1973 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Void formation was studied in annealed Type 316 stainless steel irradiated with 1-MeV protons at 400 C, 500 C, and 600 C (752, 932, and 1112 F) for amounts of damage up to 50 displacements per atom (dpa). Prior to irradiation, the samples were injected with about 5 atomic ppm helium to simulate the fast-reactor situation, where helium is generated by (n,?) reactions. The volume increase at each temperature, as determined by quantitative electron microscopy, varied exponentially with displacement damage and the exponent increased with temperature. Volume increases exceeding 20 percent were associated with 50 dpa at 500 C and 20 dpa at 600 C; no limits on volume increases were apparent at any temperature. Void number density decreased and average void size increased with increasing temperature for a constant damage. A titanium-modified 316 stainless steel developed a very inhomogeneous void distribution when proton irradiated at 600 C. However, the addition of titanium did not appear to diminish the volume increase at damages between 5 and 10 dpa, when compared with ordinary Type 316 stainless steel.

Download or read book STUDIES OF VOID FORMATION IN PROTON IRRADIATED TYPE 316 AND TITANIUM MODIFIED 316 STAINLESS STEELS written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Atom Displacements and Void Formation in Proton irradiated Type 316 Stainless Steel written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975-06 with total page 1162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Radiation on Substructure and Mechanical Properties of Metals and Alloys written by and published by ASTM International. This book was released on 1973 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Void Formation in Proton irradiated Stainless Steel written by D. W. Keefer and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Voids have been produced by 1.2-MeV proton irradiation at 500 degrees C in Type 316 stainless steel contain 2 atomic parts per million (appm) helium. The proton fluence was 6 x 1018 p/cm2. Observation of electron microscope foils, obtained at various positions along the proton pathlength, has shown that the average void diameter increased with increasing number of atom displacements, but that the void density remained constant. Calculated volume swelling ranged from 0.2 to 5%, depending on the number of displacements. In addition to voids, irradiation-produced dislocation loops and small precipitate particles on dislocations have been observed.

Download or read book Void Formation in Cold Worked Type 316 Stainless Steel Irradiated with 1 MeV Protons written by DW. Keefer and published by . This book was released on 1975 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold-worked Type 316 stainless steel was irradiated at 500and 600°C with 1-MeV protons. The dependence of void formation on displacement damage, irradiation temperature, and microstructure was studied by transmission electron microscopy. Cold working delays the onset of swelling and reduces it, via a reduction in void size, at both irradiation temperatures. Inhomogeneity in the cold-worked microstructure leads to inhomogeneity in the disposition of voids. Swelling at 600°C is greater than at 500°C; the voids are less numerous but larger at the higher temperature. No change in the cold-worked microstructure can be detected by transmission electron microscopy after 500°C irradiation to 23 displacements per atom. Irradiation to a comparable damage level at 600°C results in almost complete elimination of the cold-worked microstructure. Comparison of the results is made with data from reactor irradiation experiments.

Download or read book Void Formation in Cold worked Type 316 Stainless Steel Irradiated with 1 MeV Protons written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book ASTM Standardization News written by American Society for Testing and Materials and published by . This book was released on 1973 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Solute Segregation and Void Formation on Grain Boundaries in Electron Irradiated Type 316 Stainless Steel written by S. Ohnuki and published by . This book was released on 1985 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: Radiation-induced segregation and void formation on grain boundaries in titanium-modified Type 316 stainless steel were investigated by electron irradiation and X-ray microanalysis (EDX). Strong enrichment and depletion of solutes were observed on grain boundaries during irradiation. Moreover, preferential void formation on grain boundaries occurred and grain boundary migration was induced by the irradiation. These facts indicate that grain boundaries act as preferential sinks for radiation-induced point defects, and the sink behavior may be changed by the development of the segregation under irradiation.

Download or read book Atomic Energy Research written by U.S. Atomic Energy Commission. Division of Plans and Reports and published by . This book was released on 1970 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fundamental Nuclear Energy Research written by U.S. Atomic Energy Commission. Division of Plans and Reports and published by . This book was released on 1962 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Physics Briefs written by and published by . This book was released on 1987 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Phase Stability on Void Swelling in P Ti Modified 316 Stainless Steels During Neutron Irradiation written by S. Ukai and published by . This book was released on 1999 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: Commercially developed 20% cold-worked P,Ti-modified 316 stainless steel claddings were irradiated as fuel pins in C-type irradiation rigs of JOYO under typical fast reactor conditions. The microstructural changes of irradiated claddings at temperatures around 500 °C were extensively analyzed using transmission electron microscopy. Void formation is closely related with M6C and G-phase precipitates and concomitant phosphide dissolution beyond the fast neutron fluence of 15x1026 n/m2. Such phase instability in the fuel pin cladding during the fast reactor operation is caused by the radiation induced solute segregation, and it mainly interpreted in terms of varying system sink strength due to dislocation and precipitate changes.

Download or read book Energy Research Abstracts written by and published by . This book was released on 1980 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Five year Index to ASTM Technical Papers and Reports written by American Society for Testing and Materials and published by . This book was released on 1971 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book INIS Atomindex written by and published by . This book was released on 1987 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: