Abstract
Influences of Si content on the tensile strength and electrical resistivity of hard drawn aluminium wire were studied in this paper. It showed that the electrical resistivity and tensile strength of the wire improved with the increase of Si content, and trace content of Si led to significant increase of the electrical resistivity. It was analyzed that Fe dissolved in the α(Al) matrix in form of supersaturated solid solution and its solid solubility was about 0.03%. Similarly Si dissolved in α(Al) in form of solid solution when its content was low, and with the content increased to certain content, redundant Si would precipitate as secondary phase transforming from AlFe binary compound to AlFeSi ternary intermetallic compound of α(Al 12 Fe 3 Si 2 ) then β(Al 9 Fe 2 Si 2 ) phase.
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