Acta Materialia

Bi 1/2 K 1/2 TiO 3 (BKT)-based solid solutions are promising lead-free relaxor ferroelectrics for electromechanical and energy storage applications. In this study, we investigate the structural, dielectric, and polarization properties of the ceramics of Bi 1/2 K 1/2 TiO 3 ‒Bi 1/2 Li 1/2 TiO 3 solid solutions [Bi (1+ δ )/2 K (1− x )(1−3 δ )/2 Li x (1−3 δ )/2 V δ TiO 3, BKT‒BLT] containing A-site v…

The deformation behavior of single crystals of Mg 17 Al 12 has been investigated by micropillar compression at room temperature as a function of crystal orientation and specimen size. Three slip systems, {110}<111>, {110}<001> and {110}<110>, are identified to operate in crystal orientations in the middle of the stereographic triangle, close to [ 1 ‾ 11] and [001], respectively. The latter two sl…

In polycrystals, grain boundaries (GBs) are widely accepted as potential diffusion pathways and crack-initiation sites. GBs always form network structures in three-dimensional (3D) materials including regular GB planes, triple junctions (TJs), and high-order junctions (HJs), and thus the influence of these components on the mechanical behavior of polycrystals should be understood. In this study, …

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…