Aluminum-rich bulk metallic glasses

Correlation of mechanical properties in bulk metallic glasses with 27Al NMR characteristics

“…The values of the Knight shift given in Figure 1 (a) and (b) are on the order of ~350 ppm demonstrating that the s-electron contribution at the Fermi energy is quite small as compared to the shift in pure Al metal (~1630 ppm) [20]. This is consistent with previous NMR studies of Al-based BMGs [15,16,22] and recent electronic structure calculations of Al-Zr-Cu [16] and Al-Ca [23] amorphous systems.…”

“…To optimize the potential of metallic glasses for engineering applications, an understanding of correlations between electronic structures and mechanical properties can be quite valuable for designing and fine-tuning the properties of BMGs. Previous experimental [15][16][17] and computational studies of transition metal (TM)-based BMGs [16,18,19] have addressed the issue of the relationship between electronic structures and mechanical properties such as strength and ductility. More experimental evidence would be very useful for further establishing and understanding the correlations between structural properties and electronic properties of BMGs.…”

Phase equilibria of the Al–Pr–Zr ternary system at 773K

“…Al-based and Zr-based bulk metallic glasses (BMGs) have absorbed more and more attentions for their potential applications [1,2]. These bulk metallic glasses have such promising properties as high yield strength, hardness, and elastic strain limit, along with relatively high fracture toughness, fatigue resistance and corrosion resistance.…”

Synthesis of Al–Y–Ni–Co composites by mechanical alloying and consecutive spark-plasma sintering

“…Of particular interest are BMGs based on light elements, as their low density makes them promising candidates for engineering applications. Numerous glassy Al-RE (La, Y, Ce)-TM (Fe, Co, Ni) type alloys have been synthesized and investigated over the past two decades showing fracture strength up to 1.3 GPa [4][5][6][7][8][9]. The strength of some Al-RE-TM alloys could be even further improved by the creation of dispersion-strengthened structures via partial crystallization and formation of uniformly distributed nanograins in the amorphous matrix [10][11][12].…”