Processing and characterization of Al-Mg-Si based Composites Reinforced with Steel

作者：Bratu V; Popescu I N^*

来源：Journal of Optoelectronics and Advanced Materials, 2013, 15(7-8): 853-857.

• Al-Mg-Si/steel composites
• Casting
• Microstructural analysis
• Mechanical characteristics

The aim of this paper was to experimental study of obtaining composites with Al-Mg-Si alloy as matrix reinforced with steel in two versions: steel strip of 0.3 mm thick and steel wire (Phi 0.8 mm). The composites was prepared in an induction furnace at 700-740 degrees C. The casting semi-products composites were than hot-rolled (plastic deformation temperature was 460 degrees C) and heat treated (solution treated at 500 degrees C for 60 minutes and quenched in water (30-50 degrees C) followed by artificial ageing at 175 degrees C for 300 minutes. The obtained composite materials were analyzed in terms of optical microstructure, the mechanical characteristics (R-m, Rp(0.2), A(10)) After optical microstructural analysis we didn't observe any inclusions or oxides at matrix-reinforcement interface or any cracking after plastic deformation. The best mechanical characteristics was obtained for Al-Mg-Si/ steel wire composites (we registered an improvement of Rp(0.2) with 38% and of Rm by 23% in comparison with un-reinforced matrix).

• 出版日期2013-8