Influence of ripening on the evolution of mechanical and structural properties of the AlSi12Cu1Mg alloy

Abstract

This study is firstly to determine a compromise between strength and ductility of parts made of AlSi12Cu1Mg designated by EN AC-47100, on the other hand, it aims to evaluate the influence of curing time on behavior and damage in tension and impact, Brinell hardness, microhardness and microstructure considering the states: cast, tempered, and matured. The addition of 12% silicon (gives excellent casting properties), 1% copper (facilitates machining), and magnesium up to 1% to the aluminum are the main vectors and agents of improvement of the mechanical characteristics in addition to the specific heat treatments which reveal precipitates of different kinds (Al2Cu, Mg2Si, Si, Cu, Mg) which interfere with the displacement of the dislocations.

Keywords

• Al-Si-Cu-Mg, sous pression, coquille, revenu, mûrissement, propriétés mécaniques.