University of Nevada, Las Vegas
Las Vegas (Nev.)
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● Analyses of defects (dislocations) in martensitic Alloy EP-823, cold-reduced to different levels, have been performed by using transmission electron microscopy. The dislocation density has been related to the degree of cold-reduction and residual stress in terms of a line-shape parameter determined by the positron annihilation spectroscopy (PAS).
● Additional PAS measurements are ongoing on tensile, welded and cold-worked specimens of Alloys EP-823 and HT-9 at the Idaho Accelerator Center of ISU. Both Subhra and Silpa are involved in these measurements.
● Silpa is performing neutron diffraction (ND) measurements at the Atomic Energy of Canada Limited (AECL), Chalk River Laboratory using Cold-worked and welded specimens of Alloys EP-823 and HT- 9.
● TEM studies involving welded specimens of Type 304L stainless steel and Alloy EP-823 are being performed by Srinivas to characterize defects at the fusion line, heat-affected-zone and base metal.
Austenitic stainless steel; Deformations (Mechanics); Martensitic stainless steel; Nuclear reactors — Materials — Testing; Plasticity; Strains and stresses
Austenitic stainless steel; Martensitic stainless steel; Nuclear reactors--Materials--Testing
Materials Science and Engineering | Metallurgy | Nuclear Engineering | Oil, Gas, and Energy
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Roy, A. K.
Use of Positron Annihilation Spectroscopy for Stress-Strain Measurements: Quarterly Progress Report (March – May 2005).
Available at: https://digitalscholarship.unlv.edu/hrc_trp_sciences_materials/112