Archives of Materials Science (AMS) focuses on papers that cover and comes under broad topics and is not limited to a particular aspect:

Class of materials includes ceramics, glasses, polymers (plastics), semiconductors, magnetic materials, medical implant materials and biological materials, silica and carbon materials, metals, and metallic alloys. 
All kinds of functional materials including material for dentistry. Composites, coatings and films, pigments. Classes of materials such as ionic crystals; covalent crystals; metals; intermetallics.
Materials science or materials engineering. 
Nanoscience and nanotechnology will be considered also.
Characterization techniques such as electron microscopy, x-ray diffraction, calorimetry, nuclear microscopy (HEFIB), Rutherford backscattering, neutron diffraction, etc.
Fundamental research: Condensed matter physics and materials physics. Continuum mechanics and statistics. Mechanics of materials. Tribology (friction, lubrication, and wear). Solid-state physics and more