The aluminium alloy is the second-largest alloy being used in the world next to steel. Aluminium exhibits good mechanical strength, resistant to corrosion and lightweight. But due to some environmental variations or conditions, the alloy was found to be prone to cracking. The microstructure cracking is due to many factors like corrosion, mechanical stress, thermal stress, and bacterial adherence. The Sulfate Reducing Bacteria (SRB) is the most active bacterium, which causes rusting. The chloride ions present around the aluminium alloy led to corrosion and the failure of microstructures in the alloy.