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Modeling and Investigation of the Process of Hot Rolling of Large-Sized Ingots from Aluminum Alloy of the Al-Mg System, Economically Alloyed by Scandium

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Abstract:

Results of researches of process of hot rolling of ingots from the experimental aluminum alloy which is economically alloyed by scandium are given. The computer model of process of hot rolling with the use of which the straining, temperature and speed processing modes conditions is calculated and also power parameters of processing is calculated in applied to industrial conditions. It is shown that the use in the model of a certain shape of the ingot faces (Petrov's lock) and indirect rolling action in the edging stand is made it possible to reduce the likelihood of the formation and further development of micro cracks on the edges of rolled metal. The adequacy of results of modeling was confirmed by carrying out pilot-industrial tests when rolling large-size ingots from the experimental alloy and obtaining batches of hot-rolled plates and sheets of various sizes. The tensile test was used to study deformed samples after rolling and samples obtained on five regimes of heat treatment with varying heating temperatures of 300, 350 and 380 oС and holding time in the furnace for 1 and 3 hours. The results of the studies on samples of hot-rolled sheets 10 mm thick showed that, compared with the initial state, the strength characteristics of the metal after heat treatment are reduced by an average of 12-20%, and plastic characteristics increase by 50-65%. In this case, the heat treatment regimes 1 - 3 give a good ratio of the ductility and plastic properties of the metal.

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Periodical:

Materials Science Forum (Volume 943)

Pages:

58-65

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.943.58

Citation:

Cite this paper

Online since:

January 2019

Authors:

Viktor Mann, Sergey Sidelnikov, Igor Konstantinov, Vladimir N. Baranov, Ivan Dovzhenko, D. Voroshilov*, Ekaterina Lopatina, Olga Yakivyuk, Irina Belokonova

Keywords:

Aluminum Alloys, Heat Treatment, Hot Rolling, Magnalium, Mechanical Properties, Modeling, Scandium

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* - Corresponding Author

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