Alternative Composite Design from recycled aluminium (AA7075) chips for knuckle applications-II

Document Type

Book Chapter

Publication Date



Department of Mechanical Engineering-Engineering Mechanics


In this work, an alternative aluminium matrix composite (AMCs) was designed from the recycled chips of the aluminium series of AA7075 (90 wt %) and Al-Zn-Mg-Si-Ni (10 wt %) given by French aeronautic company to prepare a typical matrix after that we have designed a composite through combined method of powder metallurgy followed by Sintering + Forging. Basically, B2O3 (4 wt %, 8 wt %), TiC (5 wt %), fine Al2O3 Fibre (5 wt %), Zn (4 wt %) and Nb2Al (4 wt %) were added as the main reinforcements. To increase wettability of the reinforcements, we doped them through a thermomechanical treatment. The main idea of this research is to propose an alternative low cost composite for the application in a mechanism to transfer motion for the connection links, for example; between the two railways wagons etc. and also some connecting link in aeronautical pieces as an alternative replacement for conventional alloys used in this area. Mechanical properties, static compression 3-Point Bending (3PB) and dynamic drop weight tests and also micro-hardness results of these composites have been carried out. The microstructure analyses were evaluated by Scanning Electron Microscope (SEM).

Publication Title

Mechanics of Composite and Multi-functional Materials