Untitled

The Effectiveness of Al-Si Coatings for Preventing Interfacial Reaction in Al-Mg Dissimilar Metal Welding

“…For example, Mg 2 Si has previously been synthesized as a reinforcing phase in metal matrix composites. [28] Compared to the binary Al-Mg IMCs normally produced in welding, Mg 2 Si also exhibits overall better physical properties including a higher melting point and greater elastic moduli [29][30][31][32][33][34][35][36][37][38][39][40][41] (Table II), which reflects stronger interatomic bonding between Mg and Si relative to Al and Mg. The substitution of Mg 2 Si for Al 3 Mg 2 and Al 12 Mg 17 may therefore also be expected to improve the poor resistance to crack propagation through the IMC interfacial layer seen in Al-Mg dissimilar welds.…”

Modification of Mg2Si in Mg–Si alloys with K2TiF6, KBF4 and KBF4 + K2TiF6

“…Traditionally, many of the studies have been focused on the modification effect of rare earth elements, strontium, sodium salt, and halide salts on the eutectic and primary Si crystals in Al-Si alloys [17][18][19][20][21][22][23][24] and on Mg 2 Si in Al-Si-Mg alloys [11,[25][26][27][28], while less work has been carried on the modification effect of Mg 2 Si in Mg-Si alloys.…”

The effect of Bi addition on the microstructure and tensile properties of cast Al‐15%Mg2Si composite

“…Several investigations have been carried out for the modification of primary Mg 2 Si morphologies in hypereutectic Al-Mg 2 Si alloys [8,3,11]. Some researchers showed that the modification of AlMg 2 Si in the microstructure can be achieved by the additions of phosphorous [2], strontium [8], rare earth elements such as La, Ce and Nd [7,12], K2TiF6 [11], sodium salt [1] or manganese [13] to the liquid alloy. Consequently, the structural modification is one of the most attractive methods for improving the ductility and strength of these MMCs [3,12,14].…”