Harnessing strengthening-metastability synergy for extreme work hardening in additively manufactured titanium alloys.

ABSTRACT: Rapid bottom-up fabrication via additive manufacturing (AM) unlocks unprecedented design freedom for geometrically complex and lightweight titanium (Ti) alloys, a critical material for next-generation aerospace systems and 3C (computer, communication and consumer electronics) products. However, conventional AM Ti alloys face a persistent dilemma: achieving yield strengths above 1 GPa catastrophically degrades work hardening (typically < 2 GPa) and uniform ductility (< 5%). Here, we harness a strengthening-metastability synergy strategy via AM to demonstrate the powerful CoCrNi additive-strengthened Ti alloy with an outstanding combination of loss-free yield strength and drastically enhanced work hardening. Unlike traditional metastable alloys with incomplete phase transformation (β → β/α')

SUBMITTER: Chen X 

PROVIDER: S-EPMC12848114 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature