Download or read book An Assessment of Fe Cr Mn Austenitic Alloys for Fusion Service Using Fast Reactor Irradiation written by FA. Garner and published by . This book was released on 1990 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: A series of model Fe-Cr-Mn alloys and various solute-modified high manganese alloys have been irradiated in the Fast Flux Test Facility in order to provide an early assessment of the consequences of substituting manganese for nickel in austenitic stainless steel. The purpose of this substitution is to reduce the level of long term radioactivation of this alloy, a candidate structural material for use in fusion energy devices.
Download or read book Reduced Activation Materials for Fusion Reactors written by R. L. Klueh and published by ASTM International. This book was released on 1990 with total page 255 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1993 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ERDA Energy Research Abstracts written by and published by . This book was released on 1989 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Fusion written by and published by . This book was released on 1990 with total page 836 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1990 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microstructural Examination of Fe Cr Mn Alloys After Charged Particle Irradiation written by Y. Kohno and published by . This book was released on 1992 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: The microstructures of a simple ternary Fe-16Cr-15Mn alloy and a solute modified Fe-12Cr-18Mn-0.26C WVN alloy were examined after irradiation with 4-MeV Ni ions (single-beam irradiation) and with 4-MeV Ni ions with simultaneous injection of energy-degraded 1-MeV He ions (dual-beam irradiation). The microstructure prior to irradiation revealed that the ferrite phase was dominant in the Fe-16Cr-15Mn alloy in spite of the prediction of the Schaef-fler diagram, while the Fe-12Cr-18Mn-0.26C WVN alloy contained only austenite. In the irradiated Fe-16Cr-15Mn alloy, formation of a lenticular-shaped phase was observed following irradiation to 15 dpa or more. Electron diffraction analysis demonstrated that this was an austenite phase. Austenite formation was observed in both dual-beam and single-beam irradiations. The fraction of this phase increased abruptly in the early stages of irradiation. The volume fraction saturated to about 70% following irradiation beyond 20 dpa, but the saturation appeared to occur faster in dual-beam irradiations than in single-beam irradiations. Cavities were formed uniformly only within the austenite phase. Local swelling reached as high as 50% following irradiation at 773 K to 120 dpa. In the Fe-12Cr-18Mn-0.26C WVN alloy, the austenite structure was stable during irradiation, and no radiation-induced phase transformation was observed. Cavity formation was strongly suppressed in this alloy. Small cavities with a number density less than 1022 m-3 were observed following irradiation at 773 K to 35 dpa. The calculated swelling from these cavities was estimated as high as 0.4%, which was much lower than the swelling level in dual-beam irradiated 316 stainless steel.
Download or read book Fusion Energy Update written by and published by . This book was released on 1986 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microstructure Evolution in Proton irradiated Austenitic Fe Cr Ni Alloys Under LWR Core Conditions written by Jian Gan and published by . This book was released on 1999 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Precipitation Sensitivity to Alloy Composition in Fe Cr Mn Austenitic Steels Developed for Reduced Activation for Fusion Application written by RL. Klueh and published by . This book was released on 1990 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Special austenitic steels are being designed in which alloying elements like molybdenum, niobium, and nickel are replaced with manganese, tungsten, vanadium, titanium, and/or tantalum to reduce the long-term radioactivity induced by fusion reactor irradiation. However, the new steels still need to have properties otherwise similar to commercial steels like Type 316. Precipitation strongly affects strength and radiation-resistance in austenitic steels during irradiation at 400 to 600°C, and precipitation is also usually quite sensitive to alloy composition. The initial stage of development was to define a base Fe-Cr-Mn-C composition that formed stable austenite after annealing and cold-working, and resisted recovery or excessive formation of coarse carbide and intermetallic phases during elevated temperature annealing. These studies produced a Fe-12Cr-20Mn-0.25C base alloy. The next stage was to add the minor alloying elements titanium, vanadium, phosphorous, and boron for more strength and radiation-resistance. One of the goals was to produce fine MC precipitation behavior similar to the Ti-modified Fe-Cr-Ni prime candidate alloy (PCA). Additions of Ti + V + P + B produced fine MC precipitation along network dislocations and recovery/re-crystallization resistance in 20% cold-worked material aged at 800° for 168 h, whereas tungsten, titanium, W + Ti, or Ti + P + B additions did not. Addition of W +Ti + V + P + B also produced fine MC, but caused some ? phase formation and more recrystallization as well. These new alloys, therefore, achieved several of the initial design goals. Their fine MC precipitation and recovery/recrystallization behavior during aging is similar to that of the PCA. Calculations show that the new steels have over 103 times less long-term radioactivity than Type 316.
Download or read book Neutron Induced Swelling of Fe Mn and Fe Cr Mn Austenitic Alloys written by HR. Brager and published by . This book was released on 1987 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: An effort is underway to explore the potential of Fe-Cr-Mn austenitic alloys as substitutes for Fe-Cr-Ni alloys in fusion reactors. This substitution is desired to achieve a reduced level of long-term radioactivity and thereby reduce the cost and safety hazards associated with disposal of reactor components at their end of life. Neutron-induced swelling data to 50 dpa are now available at 520°C for three reduced activation alloy series and for lower exposures at 420 and 600°C. These three series cover simple binary and ternary alloys, solute-modified ternaries, and a variety of commercially available Fe-Cr-Mn alloys. The swelling of these alloys is initially similar to that of Fe-Cr-Ni alloys but then changes in response to phase instabilities that develop in the Fe-Cr-Mn system.
Download or read book Alloys for the fusion reactor environment written by United States. Division of Magnetic Fusion Energy and published by . This book was released on 1978 with total page 108 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 1992 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Radiation on Materials written by Roger E. Stoller and published by ASTM International. This book was released on 1992 with total page 1315 pages. Available in PDF, EPUB and Kindle. Book excerpt: Symposium held in Nashville, Tennessee, June 1990. Almost two-thirds of these 91 papers are authored by researchers outside of the US (including information on research in the former USSR, Japan, and Europe). Topics include: current commercial power reactor systems; microstructural characterization
Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 1390 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976-02 with total page 722 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Metals Abstracts written by and published by . This book was released on 1996 with total page 1628 pages. Available in PDF, EPUB and Kindle. Book excerpt:
