ON THE STUDY OF THE PROPERTIES OF Al-Mg-Si ALLOYS

Abstract

Investigated aluminum alloys Al-Mg-Si are subject to heat treatment after preparation. Upon completion of the heat
treatment, tensile tests (DIN EN 10002) were performed, followed by metallographic and microscopic (SEM) tests.
Comparing the fracture surfaces of different states, it was seen that the most hardened samples of alloys have a brittle
fracture, in contrast to samples aged for a longer time. In this paper, the samples were first subjected to heat treatment, which
successfully eliminated the ossification of substances, as the hardness of alloy samples during such treatment was
significantly reduced. To set predefined parameters for recrystallization, is necessary to conduct a number of studies on the
properties of matter. Comparing the results of mechanical and metallographic studies, it is seen that the desired properties of
the samples can be established after experiments to determine inclusions. Thus it can be argued that the samples were chosen
optimal conditions hardening.
The proposed method in the article and research results confirm the presence of the effect of strengthening the modes
used during heat treatment, which in turn allows further effectively predict the mechanical properties of the various products
of the system Al-Mg-Si.