The effect of adding ۱ wt.% gadolinium on the tribological behavior of aluminum alloy

The effect of adding ۱wt.% Gd on aluminum alloy's microstructure, mechanical, and wear behavior was investigated. Results show that the Al۳Gd and Al۳(Fe, Gd, Si) phases were precipitated after adding Gd in addition to Al and Al۳Fe phases detected in the base alloy. The hardness value increased, and the friction coefficient and wear rate decreased with adding Gd. The dominant wear mechanism was adhesive even after adding Gd; however, a sign of abrasive wear appeared in the alloy with ۱ wt. Gd. Improvement of wear behavior may be attributed to the formation of hard phases after the addition of Gd.

کلیدواژه ها:

Aluminum (Al) ، Gadolinium (Gd) ، Microstructure ، Mechanical properties ، Tribology