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Aging and Phase Stability Studies of Alloy 22 FY08 Final Report (open access)

Aging and Phase Stability Studies of Alloy 22 FY08 Final Report

This report is a compilation of work done over the past ten years in support of phase stability studies of Alloy 22 for the Yucca Mountain Project and contains information previously published, reported, and referenced. Most sections are paraphrased here for the convenience of readers. Evaluation of the fabrication processes involved in the manufacture of waste containers is important as these processes can have an effect on the metallurgical structure of an alloy. Because material properties such as strength, toughness, aging kinetics and corrosion resistance are all dependent on the microstructure, it is important that prototypes be built and evaluated for processing effects on the performance of the material. Of particular importance are welds, which have an as-cast microstructure with chemical segregation and precipitation of complex phases resulting from the welding process. The work summarized in this report contains information on the effects of fabrication processes such as solution annealing, stress mitigation, heat-to-heat variability, and welding on the kinetics of precipitation, mechanical, and corrosion properties. For a waste package lifetime of thousands of years, it is impossible to test directly in the laboratory the behavior of Alloy 22 under expected repository conditions. The changes that may occur in these materials …
Date: April 3, 2008
Creator: Torres, S G
System: The UNT Digital Library
Interior, Environment, and Related Agencies: FY2009 Appropriations (open access)

Interior, Environment, and Related Agencies: FY2009 Appropriations

This report discusses fiscal year 2009 appropriations under a regular bill -- the Interior, Environment, and Related Agencies appropriations bill -- which provides funding many groups, including the Department of the Interior (DOI), the Forest Service, and the Indian Health Services (IHS) program as well as general funding for arts and cultural agencies, the Environmental Protection Agency, and other entities. It includes background on previous appropriations and details by kinds of funding.
Date: April 25, 2008
Creator: Vincent, C. H.; Naughton, Blake Alan; Walke, Roger & Garrett, R. S.
System: The UNT Digital Library
Trends in U.S. Global AIDS Spending: FY2000-FY2008 (open access)

Trends in U.S. Global AIDS Spending: FY2000-FY2008

This report describes how HIV/AIDS, tuberculosis (TB), and malaria are interlinked and exacerbate efforts to control each disease, but primarily addresses funding issues related to U.S. global HIV/AIDS initiatives. It provides background information on the key U.S. agencies that implement global HIV/AIDS programs, analyzes U.S. spending on HIV/AIDS by U.S. agency and department, and presents some issues Congress might consider, particularly as debate on the President's Emergency Plan for AIDS Relief (PEPFAR) reauthorization ensues.
Date: April 10, 2008
Creator: Salaam-Blyther, Tiaji
System: The UNT Digital Library