INFLUENCE OF DEFORMATION CONDITIONS ON THE RHEOLOGICAL PROPERTIES OF 6xxx SERIES Al ALLOY
DOI:
https://doi.org/10.7494/mafe.2018.44.4.161Keywords:
plastometric tests, yield stress, strengthening curves, 6xxx series Al alloysAbstract
Knowledge of the characteristics describing the technological properties of the material is the basis for correct numerical simulation and the design of new technological processes or the modernization of existing ones. For each technological process of plastic forming, a set of features should be defined that correctly describe the susceptibility of the material to its shaping in a given process.
The paper presents the results of rheological tests of 6xxx series Al alloy, obtained for deformation parameters corresponding to the process of the extrusion of large-size profiles. The effect of deformation conditions on changes in yield stress was determined. Next, the true values of the mathematical model coefficients describing the rheological properties of the tested material were determined using the inverse method, which is the basis for conducting numerical tests.
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References
Grosman F., Hadasik E.: Technologiczna plastyczność metali. Badania plastometryczne. Wydawnictwo Politechniki Śląskiej, Gliwice 2005
Gałkin A.M.: Badania plastometryczne metali i stopów. Wydawnictwo Politechniki Częstochowskiej, Częstochowa 1990
Khenzel’ A., Shpittel’ T.: Raschet energosilovykh parametrov v protsessakh obrabotki metallov davleniyem. Metallurgiya, Moskva 1982 [Хензель А., Шпиттель Т.: Расчет энергосиловых параметров в процессах обработки металлов давлением. Металлургия, Москва 1982]
Dyja H., Gałkin A., Knapiński M.: Reologia metali odkształcanych plastycznie. Wydawnictwo Politechniki Częstochowskiej, Częstochowa 2010
Laber K., Kawałek A., Sawicki S., Dyja H., Borowski J., Leśniak D., Jurczak H.: Application of torsion test for determination of rheological properties of 5019 aluminium alloy. Key Engineering Materials, 682 (2016), 356–361
Sawicki S., Kawałek A., Laber K., Dyja H., Borowski J., Leśniak D., Jurczak H.: Plastometric testing of rheological properties of 5083 and 5754 aluminium alloy. Key Engineering Materials, 682 (2016), 362–366
Andrzejewski D., Dyja H., Sawicki S.: Badania plastometryczne własności reologicznych stopu aluminium 6082 w warunkach procesu wyciskania. Rudy i Metale Nieżelazne. Recykling, 59, 8 (2014), 395–398
Hensel A., Spittel T.: Kraft- und Arbeitsbedarf Bildsamer Formgebungsverfahren. VEB Deutscher Verlag für Grundstoffindustrie, Leipzig 1978
