Study of the Influence of Geometric Parameters on the Destruction Possibility of Aluminium Alloys during Pressing in Equal-Channel Step Matrix

Abstract:

The paper analyzes the influence of various geometric factors on the destruction possibility of aluminum alloys during pressing in an equal-channel step matrix, which allows to obtain an ultrafine-grained structure. It is found that the angle of the junction of the matrix channels has a significant effect on the Cockroft-Latham damage criterion, in contrast to the length of the inclined channel of the matrix. The most optimal value of the joint angle is 135° - in this case, the metal is processed with a sufficiently high intensity at a low level of the fracture criterion. The length of the inclined channel of the matrix is recommended to use no more than 15 mm to reduce the level of damage.

• Periodical: Materials Science Forum (Volume 1052)
• Pages: 335-339
• DOI: https://doi.org/10.4028/p-dbtu13
• Online since: February 2022
• Authors: Abdrakhman B. Naizabekov, Sergey N. Lezhnev, Evgeniy Panin
• Keywords: Aluminum, Cockroft-Latham Criterion, ECAP, FEM, Simulation

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