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Nanoengineered
ODS Feritic/Martensitic Steel for Fusion Application--Powdermet,
Inc., 24112 Rockwell,
Mr.
Asit Biswas, Principal Investigator, asitruma@worldnet.att.net
Mr.
Andrew J. Sherman, Business Official, powdermet@earthlink.net
DOE
Grant No. DE-FG02-03ER83753
Amount:
$99,983
Reduced-activation,
oxygen dispersion strengthened (ODS) ferritic/martensitic steels are the primary
candidates for first wall and blanket structural applications for future fusion
reactors. However, current ODS steel manufacturing is not cost effective and
yields anisotropic properties with bamboo-like grain structure. This
project will develop innovative, CVD coated, nanoengineered ODS powders, along
with technology for their conversion to ODS ferritic/martensitic steel. The
new, low cost manufacturing technique will use nanoengineered particulates, with
built-in nanostructural features, that are processed into final articles via
powder metallurgy techniques such as press-extrude and press-forge
consolidation. Phase I will involve
the chemical vapor deposition of iron carbonyl, chromium carbonyl, tungsten
carbonyl, or yittrium isopropoxide on iron seed particles. The
subsequent consolidation will result in improved control over dispersant size,
composition, distribution, and uniformity.
Commercial Applications and Other
Benefits
as described by awardee: New, higher
strength, high temperature ferritic steels should have application to nuclear,
fusion, and other power generation system construction.
Additional applications include turbine engines, industrial heat treating
furnace structures, and glass making equipment.
The new fabrication route should enable more precise control over
material microstructures.