Analytical and Numerical analysis of extrusion force, stress and strain development during extrusion Al-SiC composite

Abstract

Aluminium Based Metal Matrix Composite With Silicon Carbide As Particle Reinforcements Called Discontinuous Reinforced Metal Matrix Composites Have Excellent Mechanical Properties Like High Yield Strength, Wear Resistance, Corrosion Resistance And Vibration Resistance .During The Development Of Discontinuous Reinforcement Metal Matrix Composites Compression Process Like, Extrusion Is An Advisable Secondary Process For Homogenous Distribution Of The Reinforcements Materials Through The Metal Matrix. This Research Was Investigated The Metal Flow Behaviour Of Extrusion Load, Stress And Strain Distribution Of Al/Sic Based Discontinuous Reinforcement Metal Matrix Composite Billets Extruded From Round Billet To Square Shape Through Two Different Die Profiles Namely, Third Order Polynomial And Cosine Die Profiles By Taking 30%, 60% And 90% Area Reductions. Depends On These Three Different Area Reductions Were Analyzed Analytically And Numerically By Using Upper Bound And Deform 3d Finite Element Analysis Method Respectively. Due To These Different Area Reductions, The Extrusion Load Was Minimum In Cosine Die Profiles Both Analytical And Numerical Results. In 30% Of Area Reduction Cosine Die Profile Has Optimum Load (878.59n) And It Used To Extrude Al6063/20%Sic Composite Billet Materials From 20mm Input Diameter To 14.8x14.8mm Output Square Sides.