The Effect Of Low Dose Rate Irradiation On The Microstructure Of 304 Stainless Steel PDF Download
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Author | : |
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Total Pages | : 9 |
Release | : 1998 |
Genre | : |
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Download The Effect of Low Dose-rate Irradiation on the Microstructure of 304 Stainless Steel Book in PDF, ePub and Kindle
Changes in mechanical and corrosion properties caused by the development of radiation-induced microstructure have relevance to the aging and lifetime extension of light water reactors (LWR's). However, much of the current data related to microstructural development in irradiated metals are generated from studies carried out at much higher dose-rates than encountered in LWR's. An opportunity exists to study the influence of low dose-rate irradiation on microstructural development for a variety of structural and surveillance materials extracted from the experimental breeder reactor EBR-II. In this study, irradiated 304 stainless steel hexagonal ''hex'' duct material is examined in order to compare microstructure in the dose-rate range of 10−7-10−9 dpakec. The samples, taken from the reflector locations in EBR-II, experienced a total dose between 10 and 12 dpa at a temperature of (approximately)375 C. Transmission electron microscopy (TEM) results reveal that there is a moderate dose-rate effect on microstructural development for samples irradiated in the range of 2 x 10−8 to 4 x 10−8 dpa/sec, however a substantial dose rate-effect exists between dose-rates of 2 x 10−8 and 1 x 10−9 dpa/sec Transmission electron microscopy (TEM) results will detail the development of the microstructure in terms of radiation-induced cavities, dislocations, and precipitates.
Author | : J. S. Armijo |
Publisher | : |
Total Pages | : 94 |
Release | : 1964 |
Genre | : Stainless steel |
ISBN | : |
Download Radiation Effects on the Mechanical Properties and Microstructure of Type-304 Stainless Steel Book in PDF, ePub and Kindle
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Total Pages | : 11 |
Release | : 2002 |
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Download The Effect of Low Dose Rate Irradiation on the Tensile Properties and Microstructure of Austenitic Stainless Steel Book in PDF, ePub and Kindle
To assess the effects of long-term, low-dose-rate neutron exposure on mechanical strength and ductility, tensile properties were measured on 12% and 20% cold-worked Type 316 stainless steel. Samples were prepared from reactor core components retrieved from the EBR-II reactor following final shutdown. Sample locations were chosen to cover a dose range of 1-56 dpa at temperatures from 371-440 C and dose rates from 0.5-5.8 x10−7 dpa/s. These dose rates are approximately an order of magnitude lower than those of typical EBR-II test sample locations. The tensile tests for the 12% CW material were performed at 380 C and 430 C while those for the 20% CW samples were performed at 370 C. In each case, the tensile test temperature approximately matched the irradiation temperature. To help understand the tensile properties, microstructural samples with similar irradiation history were also examined. The strength and loss of work hardening increase the fastest as a function of irradiation dose for the 12% CW material irradiated at lower temperature. The decrease in ductility with increasing dose occurs more rapidly for the 12% CW material irradiated at lower temperature and the 20% cold-worked material. Post-tensile test fractography indicates that at higher dose, the 20% CW samples begin a shift in fracture mode from purely ductile to mainly small facets and slip bands, suggesting a transition toward channel fracture. The fracture for all of the 12% cold-worked samples was ductile. For both the 12% and 20% CW materials, the yield strength increases correlate with changes in void and loop density and size.
Author | : Martin L. Grossbeck |
Publisher | : ASTM International |
Total Pages | : 767 |
Release | : 2004 |
Genre | : Materials |
ISBN | : 0803134770 |
Download Effects of Radiation on Materials Book in PDF, ePub and Kindle
Author | : H. Tsai |
Publisher | : |
Total Pages | : 12 |
Release | : 2004 |
Genre | : Irradiation effects |
ISBN | : |
Download Properties of 20 % Cold-Worked 316 Stainless Steel Irradiated at Low Dose Rate Book in PDF, ePub and Kindle
To assess the effects of long-term, low-dose-rate neutron exposure, tensile, hardness, and fracture properties were measured, and microstructural characterization was performed on irradiated 20% cold-worked Type 316 stainless steel. Samples were prepared from reactor core components retrieved from the EBR-II reactor following final shutdown. Sample locations were chosen to cover a dose range of 1-56 dpa at temperatures from 371-390°C and dose rates from 0.8-3.3 × 10−7 dpa/s. Irradiation caused hardening, with the ultimate tensile strength (UTS) reaching about 800 MPa near 20 dpa and appearing to saturate at higher doses. The yield strength (YS) follows approximately the same trend as the ultimate tensile strength. The work-hardening capability of the material decreases with increasing dose. While the material retained respectable ductility at 20 dpa, the uniform and total elongation decreased to
Author | : ASTM International Symposium on Effects of Radiation on Structural Materials |
Publisher | : ASTM International |
Total Pages | : 502 |
Release | : 1976 |
Genre | : Science |
ISBN | : 9780803103887 |
Download Irradiation Effects on the Microstructure on Properties of Metals Book in PDF, ePub and Kindle
Author | : J. E. Irvin |
Publisher | : |
Total Pages | : 34 |
Release | : 1965 |
Genre | : Nuclear energy |
ISBN | : |
Download The Combined Effects of Temperature and Irradiation on the Mechanical Properties of Austenitic Stainless Steels Book in PDF, ePub and Kindle
Author | : Stan T. Rosinski |
Publisher | : ASTM International |
Total Pages | : 879 |
Release | : 2001 |
Genre | : Materials |
ISBN | : 0803128789 |
Download Effects of Radiation on Materials Book in PDF, ePub and Kindle
Author | : J. Walter Joseph |
Publisher | : |
Total Pages | : 36 |
Release | : 1959 |
Genre | : Stainless steel |
ISBN | : |
Download Stress Relaxation in Stainless Steel During Irradiation Book in PDF, ePub and Kindle
Author | : F. A. Garner |
Publisher | : ASTM International |
Total Pages | : 919 |
Release | : 1987 |
Genre | : Conferences |
ISBN | : 0803109628 |
Download Radiation-induced Changes in Microstructure Book in PDF, ePub and Kindle