@article{article_1224021, title={Effect of Cold Deformation Ratio and Reheating Temperatures on Microstructure of AA7075 Alloy Produced by SIMA Process}, journal={TÜBAV Bilim Dergisi}, volume={16}, pages={9–21}, year={2023}, author={Kılıçlı, Volkan and Akar, Neşet}, keywords={AA7075 alaşımı, SIMA işlemi, Tiksotropik yapı, Yeniden ısıtma sıcaklığı, Soğuk deformasyon oranı, Yarı katı işlem., AA7075 alloy, SIMA process, Thixotropic structure, Reheating temperature, Cold deformation ratio, Semi-solid Processing.}, abstract={The effect of cold deformation ratio and reheating temperatures was investigated on the microstructure of AA7075 alloy produced by the strain-induced melt activation (SIMA) process. For this aim, cold deformed billets with different ratios (10%, 20%, and 30%) were quenched in water from 600 °C, 606 °C, and 611 °C, and microstructural evolution was studied. It was observed that grain size reduced, shape factor increased with the increasing cold deformation ratio, and grain size and shape factor increased with the rising reheating temperatures. It was determined that a minimum of 20% cold deformation is required to produce a thixotropic structure with a homogeneous globular microstructure. It was also observed that the change in shape factor was insignificant with increasing temperature.}, number={2}, publisher={TÜRK BİLİM ARAŞTIRMA VAKFI (TÜBAV)}