Significant Increase in Tensile Strength and Hardness in 2024 Aluminum Alloy by Cryogenic Rolling

A. Shahsavari, F. Karimzadeh, A. Rezaeian, H. Heydari
2015 Procedia Materials Science  
Because of high strength to weight ratio and good resistance to corrosion, 2024Al alloy has attracted a high attention in the aerospace and shipbuilding industries. Most of the research activities to grain refinement lead to decrease in ductility. In this article, the researchers have developed a novel approach in achieving both high strength and good ductility in 2024 Al alloy. The approach involves Solid solution-treating, rolling at cryogenic temperature (containing a high density of
more » ... density of dislocations) and artificial aging treatment to generate bimodal structure and nanosized S' precipitates (Al2CuMg). Under optimal processing conditions, tensile strength (653 MPa), ductility (11% tensile elongation) and hardness (170 HV) were obtained.
doi:10.1016/j.mspro.2015.11.111 fatcat:ew3c33vd4zb4peaznyhlnprore