A study on effects of a new two-step strain induced melt activation process on characteristics of Al 7075 alloy
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Mostafa Karamouz
Abstract
It is well-known that the strain induced melt activation process results in a globular microstructure which improves the hardness and the ultimate tensile stress. However, its disadvantage is degrading some other properties such as elongation and formability due to the presence of continuous and brittle intermetallic compounds along with the formation of eutectic structures at grain boundaries. Hence, the aim of this research is to introduce a new process called two-step strain induced melt activation to overcome these drawbacks and to improve the microstructure and the formability of Al 7075 alloy. This new process yielded a globular structure and modified the microstructure. Also, the resultant precipitates were discontinuous with a more homogeneous distribution and the eutectic mixture was eliminated. Moreover, the alloy formability and the hardness were effectively enhanced by performing a rolling process.
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© 2017, Carl Hanser Verlag, München
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- First principles, thermal stability and thermodynamic assessment of the binary Ni–W system
- Experimental evaluation of forming limit diagram and mechanical properties of nano/ultra-fine grained aluminum strips fabricated by accumulative roll bonding
- FSW of bimodal reinforced Al-based composites produced via spark plasma sintering
- Modelling analysis and experiments of polycrystalline silicon directional solidification in an annular heating field
- Effect of flow, heat transfer and magnetic energy on the grain refinement of 7A04 alloy under electromagnetic pulse
- A study on effects of a new two-step strain induced melt activation process on characteristics of Al 7075 alloy
- Synthesis and characterization of mechanically alloyed cerium oxide reinforced Al-4.5Mg alloy composite
- Densification rate and interfacial adhesion of bilayer cemented tungsten carbide and steel
- Short Communications
- Cavitation erosion of 17-4 PH stainless steels following sub-zero treatment
- Investigation on microstructure and thermal properties of in-situ synthesized Cu–ZrO2 nanocomposites
- DGM News
- DGM News
Artikel in diesem Heft
- Contents
- Contents
- Original Contributions
- First principles, thermal stability and thermodynamic assessment of the binary Ni–W system
- Experimental evaluation of forming limit diagram and mechanical properties of nano/ultra-fine grained aluminum strips fabricated by accumulative roll bonding
- FSW of bimodal reinforced Al-based composites produced via spark plasma sintering
- Modelling analysis and experiments of polycrystalline silicon directional solidification in an annular heating field
- Effect of flow, heat transfer and magnetic energy on the grain refinement of 7A04 alloy under electromagnetic pulse
- A study on effects of a new two-step strain induced melt activation process on characteristics of Al 7075 alloy
- Synthesis and characterization of mechanically alloyed cerium oxide reinforced Al-4.5Mg alloy composite
- Densification rate and interfacial adhesion of bilayer cemented tungsten carbide and steel
- Short Communications
- Cavitation erosion of 17-4 PH stainless steels following sub-zero treatment
- Investigation on microstructure and thermal properties of in-situ synthesized Cu–ZrO2 nanocomposites
- DGM News
- DGM News
