Effect of ECAP and post-aging processes on 2024 aluminum alloy

Saraloglu, Ebru
Tan, Evren
Gür, Cemil Hakan
Strength of aluminum alloys can be remarkably improved by obtaining ultrafine grain size via severe plastic deformation. Equal Channel Angular Pressing (ECAP) is considered to be a good candidate that is capable to produce bulk components. In this study, the combined effects of ECAP and post-aging treatment on the mechanical properties of aluminum alloys were investigated. An ECAP die with 120 degrees channel angle was used for severe plastic deformation of 2024 Al-alloy. The ECAPed specimens revealed higher hardness values after post-aging at 190 degrees C.


Effect of ECAP and subsequent heat treatments on microstructure and mechanical properties of 2024 aluminum alloy
Saraloğlu, Ebru; Gür, Cemil Hakan; Department of Metallurgical and Materials Engineering (2008)
Severe plastic deformation (SPD) results in ultra-fine grain sizes in metals and alloys. Equal channel angular pressing (ECAP) is one of the special SPD methods aiming to introduce high plastic strains into the bulk materials without changing their cross section. ECAP results in improvement in hardness and strength while still satisfying acceptable ductility level. The combined effects of ECAP and subsequent heat treatments, i.e. post-aging and post-annealing, on the microstructure and hardness of the 2024 ...
Long-term thermal stability of Equal Channel Angular Pressed 2024 aluminum alloy
TAN, Guher; Kalay, Yunus Eren; Gür, Cemil Hakan (2016-11-20)
The strength of bulk metallic materials can be improved by creating ultra-fine grained structure via severe plastic deformation (SPD). However, the thermal stability of severely deformed materials has been a major issue that restricts their practical use within the industry. Although there are studies on the thermal stability of SPD metals, the long-term annealing response of particularly complex alloys, such as the age hardenable ones, remains undetermined. In the present study, annealing behavior of the s...
Effect of welding parameters on the hot cracking behavior of 7039 aluminum - zinc alloy
Akkuş, Mert; Gürbüz, Rıza; Batıgün, Caner; Department of Metallurgical and Materials Engineering (2010)
7039 aluminum alloys are widely being used in the aerospace, automotive and defense industries in which welding technique is used for their joining. The main problem encountered during the welding of 7039 aluminum alloy is hot cracking. The aim of this study is to understand the effect of welding parameters on the hot cracking behavior of 7039 aluminum alloy by using Modified Varestraint Test (MVT) with Gas Tunsgten Arc Welding (GTAW) technique. During tests, welding speed was selected as varying parameter,...
Effects of heat input and thermal cycles to the fracture toughness of API 5L grade X70M steel welded by gas metal arc welding
Erol, Eren; Gür, C. Hakan.; Department of Metallurgical and Materials Engineering (2019)
High strength low alloy steels are widely used in line pipe applications since they have reasonably high strength and toughness due to their micro-alloying elements and production via thermomechanically controlled process. During welding of these steels, microstructures of the fusion zone and the heat affected zone consisting globular and acicular ferrite alter due to induced heat and thermal cycles. Consequently, changes in the microstructure affects the mechanical properties such as fracture toughness. Ga...
Topuz, Seher; Gürbüz, Rıza; Batıgün, Caner; Department of Metallurgical and Materials Engineering (2022-12-02)
Fe-Ni-based superalloys are characterized by high strength, toughness, and corrosion resistance materials at room and elevated temperature applications. They are generally used in many parts requiring high toughness and ductility, such as aerospace, industrial gas turbine, and industrial components. The mechanical properties of Fe-Ni-based superalloys depend on three main effects. These alloying elements are added to the structure, working processes, and heat treatment. This study investigates the effect of...
Citation Formats
E. Saraloglu, E. Tan, and C. H. Gür, “Effect of ECAP and post-aging processes on 2024 aluminum alloy,” STEEL RESEARCH INTERNATIONAL, pp. 467–471, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55425.