Mechanical and metallurgical characterization of friction stud welded AA6061 B4C Composite AISI 1030 steel joints

Abstract

Modern day material selection and application in automotive, aircraft newlineand other engineering industries calls for weight reduction and high strength and newlinereliable performance. Aluminium Matrix Composites (AMCs) have attractive the newlinegood wear resistance, enhanced specific strength, high specific modulus and good newlinedamping capacity Hence it has numerous applications in aerospace and newlineautomotive sectors. This research pursuit deals with the development of boron newlinecarbide ceramic reinforcements to aluminium alloy AA6061 matrix 5% by weight newlinereinforcement of boron carbide is found to have good tensile strength and newlinesufficient mechanical properties for making studs in automotive applications. The newlinecurrent investigation manages the addition of boron carbide in different newlineproportions to the aluminium matrix. Each strengthened material has an individual newlineproperty that enhances the characteristics of the base composite when added. An newlineexperiment has been made to analyze the various mixes of the composites and newlinehow they influence the properties of the aluminium alloy 6061. newlineThere has been a need for joining Aluminium matrix composite stud to newlinesteel in the last decade to combine AMC s low thickness and high thermal newlineconductivity with higher steel tensile behavior. In the joints of pipes in liquid newlinepropellant tanks and other parts of Satellite Launch vehicles, AMC/stainless steel newlinejoints are unavoidable. It is achieved by friction stud welding to join a steel newlineearthing pin to an aluminum car frame. Issues found in welding aluminum matrix newlinecomposites are inferior-quality welded joint due to the distinction between the newlinecompound capability of the matrix and strengthening material illustrate that there newlineis no thermodynamic equilibrium between the two and unregulated solidification newlinedue to ceramic reinforcement phases such as SiC rejected impeding the newlinesolidification method. Consequently, this would result in inhomogeneous newlinedistribution and micro segregation of reinforcements. newline