State Key Laboratory of Metal Matrix Composites

Microstructural evolution and mechanical behavior of Mg-Li alloy fabricated by cold metal transfer wire arc additive manufacturing

A thin-walled Mg-8Li-3Al-2Zn-0.5Y alloy component was manufactured by cold metal transfer wire arc additive manufacturing (CMT-WAAM). Particular attention was given to elucidating how the intrinsic thermal history during deposition influences the microstructure evolution and the...

Decoupling Stable Cyclic Deformation From Defect Accumulation in Metals

ABSTRACT Fatigue resistance in metals is fundamentally constrained by a long‐standing dilemma: the strain hardening required to suppress deformation localization is typically achieved through the accumulation of dislocations and other defects that ultimately promote fatigue damag...

From scrap to prime: Designing high-performance alloys from dirty feedstocks with machine learning

Producing alloys from recycled metals via secondary synthesis can markedly cut energy use, greenhouse-gas emissions, and dependence on scarce, strategically important elements relative to primary routes. The central obstacle is the feedstock itself: Scrap is chemically heterogene...

Quasi-Static Penetration Resistance of Bio-Inspired Helicoidal Honeycomb Sandwich Panels: Experiments, Simulations, and Damage Mechanisms

Bio-inspired helicoidal laminates can redirect damage under transverse loading, but their response as sandwich face sheets remains unclear because the core changes both deformation and load transfer. This study experimentally and numerically investigated the quasi-static penetrat...