Effect of B4C on strength coefficient, cold deformation and work hardening exponent characteristics of Mg composites
S. Suresh, Murugesan Krishnan, S.C. Vettivel
Abstract
The emphasis of this exploration was to examine the workability and work hardening performance of Mg (Magnesium) specimen and Mg-B 4 C composites created via the powder metallurgy technique. The pure Mg and Mg-B 4 C composites are made with distinct weight percentages (Mg-5% B 4 C, Mg-10% B 4 C, and Mg-15% B 4 C) at the unit aspect ratio. The powders and composites characterization are executed by SEM (Scanning Electron Microscope), EDS (Energy Dispersive Spectrum) with an elemental map, and XRD (X-ray Diffraction) examination. It displays that, the B 4 C particles were dispersed consistently with the Mg matrix. The workability and work hardening examination was conducted in triaxial stress conditions using the cold deformation process . The consequence of workability stress exponent factor (β σ ), distinct stress proportion factors (σ m /σ eff and σ θ /σ eff ), instantaneous work hardening exponent (n i ), work hardening exponent (n), coefficient of strength (k) and instantaneous coefficient of strength (k i ) are recognized. The outcome displays that Mg-15% B 4 C specimen has greater workability and work hardening parameter, initial relative density , and triaxial stresses compared with the Mg specimen and Mg-(5–10%) B 4 C composites.