Mg-based amorphous alloys

Electrochemical charging with hydrogen increases disordering in Mg-based amorphous alloys. Herein a very disordered amorphous phase forms, which produce no reflection from the coordinate sphere. 

Al-BM-LM amorphous alloys 95 3.1. History of Mg-based amorphous alloys 148... 

Formation ranges 110 3.12. Mg-based amorphous alloys containing ... 

In this section, we report our recent results on the synthesis of Mg-based amorphous alloys in ribbon, bulk and powder forms by various preparation techniques such as melt spinning, metallic mold casting, high-pressure die casting and high-pressure gas atomization, and on their thermal, mechanical and chemical properties. This review also deals with the microstructure and mechanical properties of Mg-based alloys produced by warm consolidation of the atomized powders. 

Mg-based amorphous alloys produced by melt spinning... 

Mechanical properties of melt-spun Mg-based amorphous alloys... 

It is shown in sect. 3.1 that Mg-based amorphous alloys are obtained in Mg-Ni—R and Mg-Cu-R and that glass formation is independent of the kind of R element. It is important to know the influence of the atomic size of R on the Vickers hardness (H ) of Mg-R-M amorphous alloys. Figure 75 shows the change in of the amorphous Mg65Cu2sRio alloys with the kind of R element, together with the data of their atomic radii (S.G. Kim 1992). Although exceptional values are observed only for Eu and Yb, which also have significantly different atomic sizes, there is a tendency for to increase from about 180 for R=La to about 310 for the R element with the smallest atomic radius. 

K/s (Inoue et al. 1991 a) for Mg-Cu-Y alloys containing 65-80 at% Mg, based on the experimental data as well as the direct Unite difference method. It is therefore concluded that Mg-based amorphous alloys have an extremely large glass-forming ability due to the high resistance of the supercooled liquid against crystallization. 

Mg-based amorphous alloys containing nanoscale Mg particles (S.G. Kim et al. 

Inoue A, Masumoto T, Mg-based amorphous alloys . Materials Science and Engineering A, 1993 173 1-8. 

Seidel M, Iickert J, Zueco-Rodrigo E, Schultz L, Mg-based amorphous alloys with extended supercooled liquid region produced by mechanical alloying . Journal of Non-Crystalline Solids, 1996 205-207 514—517. 

Yamaura S, Kim HY, Kimura H, Inoue A, Arata Y, Thermal stabilities and discharge capacities of melt-spun Mg-Ni-based amorphous alloys . Journal of Alloys and Compounds, 2002 339 230-235. 

The introduction of Nd significantly enhances the corrosion resistance of the binary Mg-Ni amorphous alloys. Based on the immersion tests with measurement of hydrogen in 3% NaCl solutions, Li et al. (1998) reported... 

A. Inoue, Amorphous, quasicrystalline and nanocrystalline alloys in Al- and Mg-based systems 83... 

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