Mg–Cu–Y–Ag bulk metallic glasses with enhanced compressive strength and plasticity

High glass forming ability correlated with microstructure and hydrogen storage properties of a Mg–Cu–Ag–Y glass

“…The calculated values (E a,g =161 kJmol -1 , E a,1 =107 kJmol -1 and E a,2 =104 kJmol -1 ), in agreement with literature data [22], refer to high thermal stability and indicate that the crystallization takes place through a nucleation and growth mechanism. The frequency factor, which measures the probability that an atom with energy E a joins to an existing nucleus, can be determined from the intercept of the fitted line with the ordinate.…”

“…Among BMGs, magnesium-based systems are specifically interesting because of high strength, low cost and extraordinary high GFA [21][22][23]. [24], because of the large atomic size mismatch between Ag and the other constituents, the large negative heat of mixing in AgMg and Ag-Y and the significant reduction in crystal growth rate [25].…”

Study on the formation of new Mg–Cu–Ti–Y quaternary bulk metallic glasses with high mechanical strength

“…Since Inoue et al [4,5] first discovered the high GFA of Mg-Cu-Y ternary system, on the basis of Mg 65 Cu 25 Y 10 and Mg 60 Cu 30 Y 10 BMGs, many quaternary and quinary Mg-based BMGs have been produced and investigated by readjusting composition and partial substituting elements (such as Ag, Al, Li, Ni, Pd, Zn and RE= rare-earth elements etc.) [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Based on the above researches, some new Mg-based BMGs with improved mechanical properties are obtained, and their mechanical parameters including compressive fracture strength (σ f ), elastic strain (ε e ), Vickers hardness (Hv), elastic modulus (E) and samples size (D c ) are listed in Table 1.…”

Short-to-medium range order of Al–Mg metallic glasses studied by molecular dynamics simulations

“…Among the many MGs reported in the last few years, both Al-based and Mg-based MGs are the most common and they have been widely researched experimentally and theoretically [1][2][3][4][5][6][7][8][9][10][11][12][13][14] due to their lightweight and excellent mechanical properties [7,15,16]. One such Al-based MG is the Al-RE (rare element) bulk metallic glass (BMG) [17] of which numerous experimental studies have been performed on.…”

“…Recently, Mg-Cu-Y-Ag BMGs were successfully generated by water cooled copper mould casting. When compared with Mg 65 Cu 25 Y 10 ternary system, these quaternary BMGs possessed improved mechanical properties such as higher fracture stress at the expense of reduced thermal stability [8]. Another phase-separated Mg 60 Cu 10 Ni 16 Nd 14 BMG with a diameter of over 3 mm was also developed.…”