Department of Mechanical Engineering, Integral University, Lucknow
Online published on 4 May, 2019.
In the present research work, 6063 Al alloy was cryprolled for different reduction for tensile test and fracture toughness test. 30%, 50%, 70% and 90% reduction were done for tensile measurement. 30, 50%, 70% and 80% reduction were carried out for fracture toughness test. The formation of precipitates and intermetallic compounds were characterized by XRD analysis. The micro structural examined were carried out by optical micro-scope and transmission electron microscope. Dimple rupture is characterized by cup like depressions that denote a ductile fracture in the tensile samples it was seen that quasi-cleavage is found in the fracture toughness samples. The cracks are formed at grain boundary triple points and it propagates along the grain boundry which means fracture occurs in a intergranular mode. The fracture toughness of 80% cryorolled is 65.8313 MPa √m.
Cryorolling, Tensile test, Fracture toughness
