How was the zr55al 10ni5cu30 alloy discovered?

In 1938, Kramer 13 and 14 first reported the preparation of amorphous films by evaporation, and then Brenner 13 and 14 prepared Ni2P amorphous films by electrodeposition. 195 1 year, American physicist Turnbull proposed that liquid metal can be supercooled below the melting point without nucleation and growth through supercooling test of mercury. According to his theory, under certain conditions, liquid metal can be cooled to amorphous state. Therefore, Turnbull is actually the theoretical founder of amorphous alloys. 1960, Duwez group of California Institute of Technology invented the rapid quenching technology of quenching metal liquid by using spray gun technology. The speed of this rapid solidification and quenching can reach 65438 00℃. At this cooling rate, the metal melt of Au 75 Si 25 grows in a square nucleus on the crystalline phase, forming a supercooled liquid, namely an amorphous alloy, which is the first reported amorphous alloy in the world. 1969, a breakthrough was made in the preparation of amorphous alloys, and Pond et al. prepared amorphous ribbons up to tens of meters by rolling method. Limited by the extremely high critical cooling rate, only amorphous alloys such as silk, powder or foil can be obtained in a period of time. If the millimeter scale is defined as "lump, 1974, which is obtained from the melt of Pd2Cu2Si at a cooling rate of about 10 s". In the early 1980s, Turnbull et al. used oxide coating technology to prepare centimeter-level amorphous Pd2Ni2P at the rate of 10 s. In the late 1980s, Inoue et al. successfully discovered a new multi-element alloy system with common elements in Tohoku University, Japan, which can form bulk amorphous alloy at a low cooling rate. In 2000, Inoue research group successfully developed high strength Cu _ 2Zr _ 2HF _ 2Ti alloy and Co2Fe2Ta2B bulk amorphous alloy. In 2003, Liu Lu of Oak Ridge National Laboratory pushed the size of iron-based amorphous from millimeter to centimeter. The maximum diameter can reach 12mm, and the size of iron-based bulk amorphous alloy can be increased to 16mm. In 2004, Johnson discovered a bulk amorphous alloy system with high compressive plasticity in the Pt-based alloy system, and the compressive plasticity of the Pt-based alloy they developed reached 20%, breaking through the bottleneck that the compressive plasticity of bulk amorphous alloys was generally less than 2% in the past. Ma et al., Institute of Metals, Chinese Academy of Sciences, discovered the size of 25mm Mg2Cu2Ag2Pd.