Synthesis and Investigation of Mechanical and Tribological Property of Al7075 based Composite Reinforced with ZrO2/Ti-6Al-4V/MoS2

Abstract

Aluminum Matrix Composite (Ammc) Materials Are Now Critical Engineering Materials For Aerospace And Automotive Sectors Due To Their Light Weight And Their Comparative Strength-To Weight Ratio And Better Mechanical Properties. Al7075 Alloy Has Been Increasingly Used Among Them, Especially In Aerospace Materials Like Aircraft Wings, Where Strength, Resistance To Wear Resistance To Stress And Failure In The Structure Are Desirable. Nevertheless, Poor Wear Behavior And Reduced Interfacial Bonding Between Reinforcements And The Matrix Present Challenges. This Study Approach Is Aimed To Fabricate Al7075 Matrix Composite Materials Rein Forced With Zro2, Ti-6al-4v, And Mos2 By A Liquid Metallurgy Route Through Stir Casting. All The Compositions Included 2 Wt.% Mos??? As A Solid Lubricant And For Enhancing Wettability BeTween Reinforcements And Molten Matrix. Five Batches Were Synthesized At Various Weight Fractions Percentage Of Zro??? And Tc4 While Keeping Mos??? Invariant. Synthesis Was Conducted At A Stirring Rate Of 500 Rpm, Stirring Time Of 30 Min, And 700??C Of Pouring Temperature. Phase And Microstructural Analysis Were Carried Out Using Xrd, Om, And Sem While Archi Medes?�? Law Was Used For Density And Porosity Measurement. Mechanical And Tribological Properties Including Hardness, Compressive Strength, Wear Rate, And Coefficient Of Friction Were Experimentally Evaluated. The Enhancement Of Hardness And Compressive Strength On The Addition Of Reinforcement Was Confirmed By The Results, And Sample 4 (Al7075 + 5% Zro??? + 1.5% Tc4 + 2% Mos???) Showed Maximum Compressive Strength (591 Mpa) And Enhanced Hardness (200.7 Hv). The Reinforcements Displayed A Uniform Dispersion And Good Interfacial Bonding In The Micrographs Of Sem, Although Minimal Wetting Issues With Zro???. Xrd Identi Fied The Maintenance Of The ??-Al Phase With Supplementary Peaks Due To Zro??? And Ti-6al-4v Based Compounds. Wear Tests Demonstrated That Sample 5, Despite Realizing A Maximum Cof Value (0.43), Exhibiting A Minimum Wear Rate (5.04 ??M), And Showing A Synergy Between Fric Tion And Wear Resistance. This Research Study Is Expected To Help Manufacturing Sectors In Aerospace And Researchers Specialized In This Field Of Interest.