MIT News July 2, 2024
Optimizing the properties of structural materials to involve a tradeoff between two key characteristics: strength and ductility. Mechanical properties of titanium alloys suffer from the lack of 〈c + a〉dislocations on pyramidal slip planes, failing homogeneous plastic strain accommodation. A team of researchers in the US (MIT, industry) demonstrated that such a dilemma may be overcome by meticulously tuning the c/a ratio, the simplest crystallographic parameter of the hexagonal close-packed lattice, through Sn alloying. Combining this lattice-scale design concept with a cross-rolling based polycrystal-scale design solution, they showed a facile route to bimodal (α + β) titanium alloys with exceptional strength–ductility synergy… read more. TECHNICAL ARTICLE
A new method for creating titanium alloys… Credits: iStock.