Stress state of 6063 cold-formed aluminium alloy workpieces in a closed die
Ashkeyev Z. Abishkenov M.
2021G.V. Kurdyumov Institute for Metal Physics of N.A.S. of Ukraine
Metallofizika i Noveishie Tekhnologii
2021#43Issue 7959 - 969 pp.
The article presents the results of stress state analysis for workpieces from aluminium alloy 6063 cold-formed in a closed die. Mathematical methods of computer modelling (finite element method) and slip lines (slip-line field method) are used for the analysis. The experimental procedure for repeated cold deformation in a closed matrix (in several passes and/or cycles), the mechanisms of grain grinding and material hardening under the influence of grain-dislocation factors are described. The results of the stress state study of the material during cold deformation (at room temperature) show that the volume of the workpiece is mainly compressive stresses, the values of which are in the range from −273 MPa to −533 MPa. As found, due to the hydrostat-ic stress from the side of the punches and the side walls of the semi-dies, the workpiece is subjected to triaxial compression, which makes it possible to ob-tain volumetric spherical workpieces with ultrafine-grained nanostructure in a closed die with minimal processing cycles.
Closed die , Compressive stresses , Finite element method , Slip-line field method , Stress state , Triaxial compression
Text of the article Перейти на текст статьи
Karaganda Industrial University, 30 Republic Ave., Temirtau, 101400, Kazakhstan
Karaganda Industrial University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026