Global and Local Deformation Analysis of Mg-SiC Nanocomposites: Digital Image Correlation (DIC) and Representative Volume Element (RVE) Techniques

• DOI: 10.3390/jcs8010001
• Publication Date: 2023-12-19T09:18:37Z
• Authors: Fatemeh Rahimi Mehr; Sepideh Kamrani; Claudia Fleck; Mohammad Salavati
• Keywords: Representative elementary volume; Digital image correlation

Improving the ductile deformation behavior of Mg-SiC nanocomposites without compromising strength is critical to enhancing their mechanical properties. are produced through milling, cold isostatic pressing, sintering, and hot extrusion processes. This study investigates uniaxial stress–strain response nanocomposite compared pure Mg samples with milling process. The was investigated by two-dimensional (2D) digital image correlation (DIC) at two macroscopic microscopic scales, employing light micrographs in situ loading samples, respectively, scanning electron microscope. Compared test results demonstrated a significant improvement (80 MPa) fracture strain (23.5%) nanocomposite. three-dimensional (3D) representative volume element (RVE) model revealed particle dispersion effect on properties RVE demonstrate sample homogenous SiC particles heterogeneous good agreement between DIC predictions for across macro- microscales.