Effect of rare earth Yb on microstructure and corrosion resistance of ADC12 aluminum alloy

Effects of Al8Cu4Er Phase on Corrosion Behavior of Al–Cu–Mg alloy with Er addition

“…Unlike other types of rare earth alloying [31][32][33], adding Er into the Al-Cu-Mg alloy induced the formation of the Al 8 Cu 4 Er phase, which is fundamental in regulating the IGC and pitting corrosion. The Al 8 Cu 4 Er phase can significantly refine the grains during recrystallization, which disperses S-phases at the grain boundaries and hence breaks the continuous corrosion channels and improves the IGC resistance [34].…”

Influence of cooling speeds on the microstructure and properties of A356 aluminum alloy after squeeze casting

“…During the solidification process of A356 alloy, a portion of Si dissolves in the Al matrix, leading to the creation of an excessively saturated solid solution, while a portion forms a precipitate phase Mg 2Si with Mg elements. The remaining Si diffuses between dendrites during the solidification process and undergoes eutectic reactions with the Al matrix, forming an Al-Si eutectic phase [6]. Figure 2 presents the metallographic structure of A356 alloy at different cooling speeds after squeeze casting.…”

Corrosion of Cast Aluminum Alloys: A Review

“…Zou et al [11] studied the effect of adding Yb in a concentration range between 0 and 1.2% to an ADC12 alloy obtained by gravity in a metal mold. They found an optimal corrosion resistance in the alloy containing 0.9% Yb with a minimum weight loss rate of 46 µ gcm -2 day -1 ( Figure 6) after a 30 days of corrosion immersion test.…”

“…Reprinted with permission of[108].Metals 2020, 10, x FOR PEER REVIEW 7 of Weight loss rate curves of ADC12-xYb aluminum alloys immersed in 3.5 wt % NaCl solution for 10, 20, 30 days. Reprinted with permission from Elsevier[11].…”