The effect of precipitates on characteristics of serrated flow in AlZn5Mg1 |
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| Affiliation: | 1. Warsaw University of Technology, Faculty of Materials Science and Engineering, Woloska 141 street, 02-507 Warsaw, Poland;2. Bialystok University of Technology, Faculty of Mechanical Engineering, Wiejska 45C street, 15-351 Bialystok, Poland |
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| Abstract: | The effect of annealing temperatures up to 400°C on characteristics of serrated flow was investigated at different test temperatures. Guinier-Preston zones which form due to annealing around 70°C, and incoherent precipitates which form between 200 and 240°C suppress serrated flow. However, both types of precipitates act through different mechanisms, affecting the characteristics of serrations in distinctly different ways. In tests at elevated temperatures, deformation-induced precipitation and redissolution is of importance. |
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