Alexander Knowles1
University of Birmingham1
Alexander Knowles1
University of Birmingham1
The microstructure template of a disordered matrix reinforced by ordered-intermetallic precipitates offers a potent design strategy for high temperature materials, enabling strength alongside damage tolerance, which has been central to the success of fcc Ni-superalloys. Such a strategy is equally applicable to bcc-based systems, which offer advantages of increased melting point, lower cost, and/or lower density. However, whilst bcc-superalloys based upon a refractory metal, Ti, Cr or Fe matrix, strengthened by ordered-bcc intermetallic precipitates are possible, further research and development is need for them to become a commercial reality.<br/><br/>In this talk, opportunities for bcc-superalloys systems will be discussed, from binaries to ternaries and more complex alloys, including Refractory High Entropy Superalloys. It will then discuss our latest developments in tungsten-based bcc-superalloys, beta-Ti superalloys and chromium superalloys. Prospectives will be given for the onward development of the bcc-superalloy concept for application in nuclear fusion, Gen-IV fission, gas turbines and concentrated solar power.