Effect of additional elements such as Fe, Si, Mn, Cr, Ti and B on dry cutting tool wear of Al-4.5%Mg alloy was studied.
The results are obtained as follows: (1) With the least amount addition of Ti and B to the alloy, the material, which contains very hard intermetallic compound such as TiB
2, increases cutting tool wear resulted by abrasion. (2) Tool wear decreases as Fe content increases to the level of 0.2% and it gradually increases above 0.2%. The reason is that, when Fe content increases and, as a result, solute Fe content increases, it decreases greatly the diffusive tool wear between the adhesive layer of aluminum alloy and tool whereas the Al-Fe compounds increase as Fe content increases, resulting in the increase in the abrasive tool wear.
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