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Technology

A Novel Reduced Activation Ferritic-Martensitic Steel

Invention Reference Number

202305399
Tokamak graphic

The first wall and blanket of a fusion energy reactor must maintain structural integrity and performance over long operational periods under neutron irradiation and minimize long-lived radioactive waste. The steel alloys in this invention serve as structural materials to enable the first wall and blanket to withstand more heat and to keep them from falling apart, and also have low activation. This invention makes the operation of fusion reactors more thermodynamically efficient and more environmentally friendly.

Description

This invention is a novel reduced activation ferritic martensitic steel that bridges the performance and manufacturing gaps between traditional reduced activation ferritic martensitic steels and advanced oxide dispersive ferritic steels. This alloy has a high number density of nanocarbides in the reduced activation ferritic martensitic steels produced through the ingot making method. Iron chromium based, the alloy adds nano-elements to strengthen the material. The alloy supports the plasma-facing materials.

Benefits

  • Reduced activation
  • Reduces radioactive waste 
  • Better performance, less creep
  • Very high strength
  • Can withstand very high temperature
  • Promotes thermal efficiency

Applications and Industries

  • Fusion energy industry
  • Fission energy industry

Contact

To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.