NSTD Research Projects: TRP
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TRP -> Campaign/Number -> TRP 15
TRP 15. Immobilization of Fission Iodine by Reaction with a Fullerene-containing Carbon
Compound and Insoluble Natural Organic Matrices
August 2002 - October 2007
Research Objectives & Methods
The primary objective of this task was to evaluate the feasibility of the characterization of residual stresses in plastically-deformed and welded structural materials using a new nondestructive technique based on the Positron Annihilation Spectroscopic (PAS) method. The residual stresses measured by a modified PAS method have been compared to those measured by three other techniques; namely the Ring-Core (destructive), X-Ray Diffraction (non-destructive), and Neutron Diffraction (non-destructive) techniques.
All four techniques have been used to evaluate residual stresses in cold-worked, plastically deformed, and welded specimens of austenitic Type 304L Stainless Steel (SS), and martensitic Alloys EP-823 and HT-9. Alloy EP-823 is a leading target structural material to contain the molten lead-bismuth eutectic nuclear coolant needed for fast spectrum operations of an Accelerator-Driven Transmutation System. Type 304L SS is a universally-known corrosion resistant low-carbon iron-nickel-chrome alloy having optimum formability and weldability. Alloy HT-9 is known for its superior high temperature tensile properties. The metallurgical microstructures, and the nature of defects, have been analyzed by optical microscopy, scanning electron microscopy, and TEM.
Researchers
- Spencer Steinberg, Chemistry
- Gary Cerefice, Nuclear Science & Technology Division
- David Emerson, Chemistry
Collaborators
- James Laidler, Senior Scientist, Chemical Technology Division, Argonne National Laboratory
- George Vandergrift III, Senior Scientist, Chemical Technology Division, Argonne National Laboratory
- Michael Savopulo, V.G. Khlopin Radium Institute - Research-Industrial Enterprise, St. Petersburg, Russia
- Boris Burakov, Head of Mineralogical Group, V.G. Khlopin Radium Institute - Research Industrial Enterprise, St. Petersburg, Russia
Students
- Nancy Birkner, Masters, Chemistry
- James Dorman, Masters, Chemistry
- Ginger Kimble, Masters, Chemistry
-
Gregg Schmett, Masters, Chemistry
MS Thesis