Effect of Adding Boron on the Electrical Conductivity of Alloy AL-Mg-Mn

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Author(s) Hussein A. Alwan | Nabil L. Al Saffar | Haidar A.H. al-Jubouri
Pages 964-972
Volume 3
Issue 11
Date November, 2013
Keywords boron, electrical conductivity, artificial aging, homogenization, transition metals.

Abstract

Boron treatment is widely used to remove transition metals Ti , V and Zr for electrical conductive grade (Al) ,addition of boron in aluminum melts significantly decreases these impurities (as solute), boron can combine with even trace amounts of transition elements to form insoluble boride compounds thus lowering the transition metal impurity content in the metal , the borides can then be separated by precipitation, add boron leads to a significantly improvement in the electrical conductivity of the aluminum commercial, studies shown that mechanisms of reactions between boron and transition metal impurities in liquid aluminum are not fully understood. The effects of artificial aging treatment at temperature (175℃) and different times (1-5-10-20-30-50 hr.) on electrical conductivity for alloy used in the current search and the action mechanism have been investigated, as the percentage of improvement in the electrical conductivity (23.6%) of the alloy (B6) at temperature (175℃) and aging time(20hr.) compared with the alloy base (A).

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