High Energy X-Ray Characterization of Microstructure at Macroscopic Depths in Pu Alloys
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Brown, Donald William↗
Engineering topics
Jacobs, Taylor Roth
Publications and source records attributed to Jacobs, Taylor Roth.
Analysis of the MST-16 crimp process on cold 304L stainless steel
The purpose of this report is to assess the quality of the MST-16 crimp process through a series of cold experiments and metallographic analyses. Common practice in MST-16 uses a mechanical crimp on 304L stainless steel tubes to prevent radioactive contamination from escaping the tube interior for a variety of experiments. The crimped tubes must pass a leak check to demonstrate their radiological safety. Cold (i.e. non-radioactive samples) 304L tube samples were tested using two different approved crimping devices to assess the quality of the crimps. Each crimp was leak checked, followed by destructive metallographic analysis to determine the quality of both the crimp equipment and procedures used by MST-16 personnel.
42 ENGINEERING↗
Mechanical property-microstructure relationships of an X70 pipeline steel at elevated temperatures
Abstract not provided
Jacobs, T. R.↗
Defects and Mechanical Behavior of Plutonium [Slides]
Defects are important because they heavily influence material properties (e.g. strength, ductility, elasticity, conductivity, phase transformation temperatures (melting point), corrosion resistance, etc.). At LANL defects in plutonium are being characterized using many different methods (e.g. EXAFS, XRD, microscopy, RUS, DSC, dilatometry, density, etc.) My goal is to introduce a complimentary method of understanding defects in δ-Pu using the mechanical microscope concept. Using well-developed theories of first principles strengthening mechanisms (i.e. how defects influence strength) and carefully designed experiments, mechanical testing can compliment other defect characterization tools.
36 MATERIALS SCIENCE↗