Certain investigations on the effect of welding parameters on the performance of aluminium alloy 8011 welded plates

Abstract

In recent times lightweight materials such as aluminium composites high strength-weight ratio are the preferred materials of choice owing to technology improvements and the importance of energy saving and naturally maintainable products with minimum operational costs Some of the general lightweight materials to be considered are magnesium beryllium and aluminium Of these Aluminium alloys have successfully contributed to meet the rising demand for lightweight structures when compared to other materials such as magnesium and beryllium primarily owing to the cost and ease of manufacture Hence Aluminium plays a vital role in load bearing structures for many applications and is considered as research material in this thesis Even though aluminium is a load bearing it is found that structures fail because if weakness in joining To overcome these failures we prefer welding parameters and their efficiency which resolves many welding related challenges The conventional welding process is mostly adopted for mild steels but in light weight material friction stir welding process is widely used due to its high Factor of safety The fundamental rule of Friction Stir Welding FSW is warming the metal to a temperature below the re crystallization temperature thereby lowering the risks of welding crack porosity band hot split which are usually formed in the traditional welding technique because of alloy s low crystallization temperature and high warmth distribution nature newline