Development of mathematical models of superplasticity properties as a function of parameters of aluminum alloys of Al-Mg-Si system

• Published in: Physics of metals and metallography Vol. 114; no. 3; pp. 272 - 278
• Main Authors: Churyumov, A. Yu, Mikhailovskaya, A. V., Kotov, A. D., Bazlov, A. I., Portnoi, V. K.
• Format: Journal Article
• Language: English
• Published: Dordrecht SP MAIK Nauka/Interperiodica 01.03.2013; Springer; Springer Nature B.V
• Subjects: Alloys; Aluminum alloys; Aluminum base alloys; Chemistry and Materials Science; Diffusion; Materials Science; Mathematical analysis; Mathematical models; Metallic Materials; Plastic deformation; Specialty metals industry; Strength and Plasticity; Superplastic forming; Superplasticity; yield stress; mathematical simulation; eutectic particles; superplasticity; aluminum alloys
• ISSN: 0031-918X; 1555-6190
• DOI: 10.1134/S0031918X1303006X

The article discusses the superplasticity properties and structure parameters of cold-worked alloys of a quasi-binary section of the Al-Mg-Si system with a volume fraction of eutectic particles of 0.08–0.18. Mathematical models of yield stress and effective elongation as a function of the structure and engineering parameters have been developed for alloys of this system. An analysis of the developed models shows that, in the temperature range of 520–560°C, superplastic deformation is controlled by the rate of diffusion of aluminum atoms in the grain bulk.