Invention Reference Number
V-Cr-Ti alloys have been proposed as candidate structural materials in fusion reactor blanket concepts with operation temperatures greater than that for reduced activation ferritic martensitic steels (RAFMs). However, the upper operating temperature of the leading candidate V-4Cr-4Ti (V44) alloy, limited to <700 C due to poor creep resistance, severely limits its design envelope. These V44 alloys are also susceptible to irradiation hardening and embrittlement when irradiated below 400 C, due to lack of microstructural features to mitigate formation of high density defect clusters. This proposed proof of principle work is designed to address these challenges by developing nanoprecipitate strengthened V alloys (NPV) with dramatically improved high temperature strength and irradiation stability.
Contact
To learn more about this technology, email partnerships@ornl.gov or call 865-574-1051.
