content: There is a hell of a lot of research to be done.  Hopefully, molecular modeling of these materials/properties can lead to some predictions and insights that fast forward us to breakthroughs without first having to bench-top research all the millions of combinations and annealing conditions.    Scandium is just what they are using now.  What other mixtures/alloys can increase the strength and toughness?  What about the introduction of carbon or other nonmetals?  There is just so much that can be tried and tested.  Getting a handle on how these properties come about so that models can predict how these alloys and mixtures will behave has to be where the money is at.