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原文传递 Development of a Weldable Neutron Absorbing Structural Material

题名：	Development of a Weldable Neutron Absorbing Structural Material
作者：	J. N. DuPont;C. V. Robino;W. L. Hurt;R. E. Mizia;
关键词：	National Spent Nuclear Fuel Program; spent nuclear fuel; Yucca Mountain Repository12 - MGMT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; ALLOYS; BUILDING MATERIALS; CHEMICAL COMPOSITION; CROSS SECTIONS; FISSILE MATERIALS; GADOLINIUM; HIGH-LEVEL RADIOACTIVE WASTES; MANAGEMENT; MECHANICAL PROPERTIES; NEUTRONS; NUCLEAR FUELS; SPENT FUELS; THERMAL NEUTRONS; YUCCA MOUNTAIN
摘要：	The National Spent Nuclear Fuel Program, located at the Idaho National Laboratory, coordinates and integrates national efforts in management and disposal of U.S. Department of Energy (DOE)-owned spent nuclear fuel.These management functions include development of standardized systems for packaging, storage, treatment, transport, and long-term disposal in the proposed Yucca Mountain Repository. Nuclear criticality control measures are needed in these systems to avoid restrictive fissile loading limits because of the enrichment and total quantity of fissile material in some types of the DOE spent nuclear fuel. This paper will outline the results to date of a metallurgical development program that is investigating the alloying of gadolinium into a nickel-chromium-molybdenum alloy matrix. Gadolinium has been chosen as the neutron absorption alloying element due to its high thermal neutron absorption cross section and low solubility in the expected repository environment. The nickel-chromium-molybdenum alloy family was chosen for its known corrosion performance, mechanical properties, and weldability. The workflow of this program includes chemical composition definition, primary melting and secondary refining studies, ingot conversion process evaluations, mechanical/physical properties and corrosion testing, welding studies, and national consensus codes, and standards work.
报告类型：	科技报告