Acta Materialia

This investigation presents a novel multidimensional continuous conditional generative adversarial network that is able to create alloy microstructures directly from composition-process variables in a single forward pass. The model is applied to discover ternary Mg-Al-Sn alloys manufactured by casting with high ultimate tensile strength and low corrosion rate. From the target performance indices,…

Metallic micrometamaterials exhibit exceptional specific strength and energy dissipation capacity, yet their mechanical behavior under extreme thermomechanical conditions remains poorly understood. Here, we uncover deformation mechanisms in metallic microlattices subjected to combined thermal and mechanical extremes. Copper microlattices were fabricated via localized electrodeposition process wit…

Physical properties of alloys are known to be affected by local order on the atomic scale; however, since this structural feature appears on sub-nanometer to nanometer scale, characterization of it is inherently challenging. Interest in local order in metallic systems has increased in recent years, driven by the development of increasingly compositionally complex alloys and observation of phenome…

Understanding the evolution of dislocation structures during plastic deformation is critical for predicting the mechanical performance of metallic materials. In this work, we applied in situ scanning electron microscopy/electron backscatter diffraction tensile testing combined with multifractal (MF) analysis to assess deformation-induced dislocation structure evolution in solution-annealed 304L s…

• Fundamental twinning mechanisms of FCC crystals were studied by micromechanical testing. • Single-slip based twinning mechanism are predominant in sub-micron pillars. • The size scaling for dislocation slip and twinning is identical. • A secondary twin type is observed in multi-slip activation cases. • The lower bound for the critical twinning shear stress for the Cantor alloy is around 130 MPa…

Eutectic solidification exemplifies nonequilibrium pattern formation, making it a well-studied moving boundary problem. Yet the mechanisms behind the formation of complex-regular microstructures — particularly in highly anisotropic systems with a significant volume fraction of a faceted phase — remain poorly understood. Our understanding of such systems is made complicated by the nonlinear interf…