The feasibility of friction stir welding to joining AC4CH semisolid cast aluminum alloy with 6061 plates was investigated, including the influence condition on mechanical properties joints. Excessive heat input conditions high tool rotational speed and low result in formation large burrs. Although hardness zone is scarcely affected by condition, as 1mm/s makes heat-affected zones both sides sof...

T. Vuherer, University of Maribor, Faculty of Mechanical Engineering, Slovenia, M. Dunđer, University of Rijeka, Politechnika Department of Philosophy Faculty, Croatia, I. Samardžić, University of Osijek, Mechanical Engineering Faculty, Slav. Brod, Croatia, Lj. Milović, University of Belgrade, Faculty of Technology and Metallurgy, Serbia, M. Zrilić, University of Belgrade, Faculty of Technology...

A two-dimensional thermal elasto-plastic numerical model is developed by finite element method to analyze and compare the mechanical driving factor for heat affected zone (HAZ) liquation cracking during laser welding and hybrid laser-arc welding techniques. Calculations of transient temperatures and cooling rates are used in conjunction with solidification theory to analyze weld pool characteri...

this paper aims at investigating the effects of weld nugget size and expulsion on the mechanical properties of low carbon steel resistance spot welds using tensile-shear test. mechanical performance of spot welds are described in terms of failure mode, peak load and failure energy obtained from the tensile-shear test. the effects of voids and porosity as well as electrode indentation associated...

Abstrac t -With increasing miniaturization in microelectronics the wirebonds used in IC packages are witnessing a thrust towards fine pitch wirebonding. To have a precise control over loop height of the wirebond for fine pitch wirebonding, it is imperative to do mechanical characterization of the wirebond. The present work studies the mechanical properties of gold wire and wirebond using nanoin...

Industrial microwave technology for processing polymers and polymer based composites is currently in a state of considerable flux. This paper extends the applications horizon of microwaves in the area of reinforced thermoplastic composites joining, and places emphasis on the development of equipment and facilities aiming at maximising bond quality. It discusses the microwave facility used, incl...