Influence of geometry and grain size on the mechanical properties of Al 6101 under static loading of cylindrical samples

Abstract

In this work, we study the influence of the geometry of cylindrical samples and the structure of the material (coarse and fine-grained) on the behavior of Al-6101 under static loading (tension) at room temperature. Three types of structure were investigated: coarse-grained during natural and artificial aging, as well as fine-grained, obtained by the method of equal channel angular pressing (ECAP). Cylindrical specimens were presented in three geometries: “classic” cylindrical and with additional grooves - thinning with respect to the center of the specimen up to 3 and 2 mm. Also, the values of mechanical properties (tensile strength and yield strength) were obtained for samples without undercut for comparison with the known tabular values of this material. It is shown that with a decrease in the grain size, the strength of the material increases, and also that specimens with a narrower working part turn out to be the least plastic, but show a higher strength. This study allows a more complete description of the fracture process for a given material.