Formation and mechanical properties of (Ce–La–Pr–Nd)–Co–Al bulk glassy alloys with superior glass-forming ability

Preparation and Characterization of TiB2-(Supra-Nano-Dual-Phase) High-Entropy Alloy Cermet by Spark Plasma Sintering

“…Additionally, the atomic packing rate of FCC structure is 74%, whereas that of BCC structures is only 68%. Dense packing would make the alloy melt with high viscosity and low atomic mobility, which would greatly reduce the nucleation rate and growth velocity, and facilitate amorphization [26,27].…”

“…As an advanced ceramic material, titanium diboride (TiB 2 ) has been widely applied in many fields, including cutting tools, high-temperature structural components, aluminum evaporation boats, conductive coatings, and armors in the military [1,2] due to its outstanding properties, which include its high melting point (3225 • C), hardness (25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35), modulus (560 GPa), excellent wear resistance, high chemical stability, and good electrical and thermal conductivity [3,4]. However, because of the oxygen-rich layer (TiO 2 and B 2 O 3 ), strong covalent bonding, and low self-diffusion coefficient, it is difficult to sinter TiB 2 to full density [5,6], even with the assistance of pressure.…”

Formation and Properties of New La-Based Bulk Glassy Alloys with Diameters up to Centimeter Order

“…Very recently, Ln-based glassy alloy rods with diameters of over one centimeter were fabricated. However, the new bulk glassy alloys exhibited narrow ÁT x which were below 45 K. 23,24) In this paper, we report on the formation, stabilization of supercooled liquid and mechanical properties of a new series of Ln-based glassy alloys in the La-Al-Cu-Ag and La-Al-CuAg-(Co,Ni) systems, which show the critical diameters range from 6 to 12 mm, low T g of 398-425 K, large ÁT x of 65-96 K and high fracture strength of 640-858 MPa with plastic strain of $0:4%.…”

“…19) In addition, the ÁT x is also an importent parameter that interprets GFA of bulk glassy alloys. 20) Recently, the Ln-based bulk glassy alloys have gained considerable interest again because the glassy alloys have lower T g , 21) large ÁT x , 21) high GFA, [22][23][24] low melting temperature, 25) good mechanical properties, 24,26) and hard magnetic properties. 22) It is important for scientific and engineering aspects to develop a new Ln-based glassy alloy with higher GFA and larger ÁT x .…”

The Influence of Similar Element Coexistence in (La-Ce)-Al-(Co-Cu) Bulk Metallic Glasses

“…Many rare earth based alloys, such as Y-, La-, Ce-, Nd-, misch metal-based BMGs, with superior GFA were pinpointed through the elemental addition and substitution method to obtain the multi-component alloys. [3][4][5][6][7][8][9][10][11] However, how to choose elements to construct multi-component alloys with high GFA still befuddles researchers. Recently, we reported that the GFA of ternary Ln-Al-Co (Ln = La, Ce, Pr and Nd, respectively) BMGs can be evidently improved by substituting multi-lanthanide atoms for single-lanthanide solvent atoms to form (Ce-La-Pr-Nd)-Al-Co BMG.…”