Ashby map for composite BMGs
The Ashby map is used by engineers to select materials based on their stiffness (Young’s modulus) and fracture toughness. The lines of constant gradient, G, give the strength. The composite BMGs made by the Californian team, highlighted by the red arrow, are as tough, if not tougher, than the best iron, titanium or steel alloys. (Credit: Hofmann et al.)