Formation of metal-metal type aluminum-based amorphous alloys

1988 ◽  
Vol 19 (5) ◽  
pp. 1369-1371 ◽  
Author(s):  
An-Pang Tsai ◽  
Akihisa Inoue ◽  
Tsuyoshi Masumoto
Keyword(s):  
Amorphous Alloys ◽  
Metal Type ◽  
Metal Metal

MAGNETIC PROPERTIES OF METAL-METAL AMORPHOUS ALLOYS

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-686-C8-689 ◽  
Author(s):  
T. Masumoto ◽  
S. Ohnuma ◽  
K. Shirakawa ◽  
M. Nose ◽  
K. Kobayashi
Keyword(s):  
Magnetic Properties ◽  
Amorphous Alloys ◽  
Metal Metal

ELECTRON RADIATION DAMAGE OF SOME METAL-METAL AMORPHOUS ALLOYS

1980 ◽  
Vol 41 (C8) ◽  
pp. C8-854-C8-857 ◽  
Author(s):  
J. Hillairet ◽  
E. Balanzat ◽  
J. Bigot ◽  
H. U. Künzi
Keyword(s):  
Radiation Damage ◽  
Amorphous Alloys ◽  
Electron Radiation ◽  
Metal Metal

Some correlations for diffusion in amorphous alloys

1989 ◽  
Vol 4 (3) ◽  
pp. 603-606 ◽  
Author(s):  
S. K. Sharma ◽  
S. Banerjee ◽  
Kuldeep ◽  
Animesh K. Jain
Keyword(s):  
Activation Energy ◽  
Diffusion Coefficient ◽  
Amorphous Alloys ◽  
Published Data ◽  
Empirical Correlations ◽  
Atomic Size ◽  
Exponential Factor ◽  
Impurity Atoms ◽  
Metal Metal ◽  
Definite Correlation

Diffusion of several impurity atoms (Cu, Al, Au, and Sb) has been studied in Zr61Ni39 and Fe82B18 amorphous alloys. A definite correlation between the diffusion coefficient (D) and the atomic size of the diffusant is seen for the metal-metal (M–M) alloy, while it is not clear for the metal-metalloid (M–Me) alloy. Based on the present data, as well as other published data in binary amorphous alloys, empirical correlations have been found between (i) the activation energy (Q) and the energy required to form a hole of the size of the diffusing atom in the host alloy, and (ii) the pre-exponential factor (D0) and Q. While the former correlation is seen only for binary M–M type of amorphous alloys, the latter correlation is more general and holds for all types of amorphous alloys. Based on the correlation between D0 and Q, it is proposed that there are two distinct mechanisms of diffusion in amorphous alloys.

Atomic Size Effects on the Composition Range of Binary Amorphous Alloys

1986 ◽  
Vol 80 ◽  
Author(s):  
S. H. Liou ◽  
C. L. Chien
Keyword(s):  
Size Effects ◽  
Amorphous Alloys ◽  
Composition Range ◽  
Equilibrium Phase ◽  
Size Difference ◽  
Atomic Size ◽  
Atomic Size Difference ◽  
Metal Metal ◽  
Quench Method

AbstractWe have studied a number of binary metal-metal and metalloid alloy systems made by a single vapor quench method under very consistent conditions. In each case, amorphous alloys are found in one continuous composition range (Xmin<x<xXmax) regardless of the number of eutectic points in the equilibrium phase diagrams. It is found that the atomic size difference is the single most important factor in the quantitative determination of the composition range.

scholarly journals Preliminarily optimizing glass-forming compositions in metal-metal type ternary alloy systems with a large-sized solvent element

AIP Advances ◽  
2018 ◽  
Vol 8 (10) ◽  
pp. 105119
Author(s):  
S. H. Wang ◽  
D. F. Li ◽  
K. K. Song ◽  
H. G. Sun ◽  
S. Wu ◽  
...  
Keyword(s):  
Ternary Alloy ◽  
Glass Forming ◽  
Ternary Alloy Systems ◽  
Metal Type ◽  
Metal Metal ◽  
Alloy Systems

Stability and Icosahedral Transformation of Supercooled Liquid in Metal-Metal type Bulk Glassy Alloys

2003 ◽  
Vol 806 ◽  
Author(s):  
Akihisa Inoue ◽  
Wei Zhnag ◽  
Dmitri V. Louzguine ◽  
Junji Saida ◽  
Eiichiro Matsubara
Keyword(s):  
Short Range ◽  
Analytical Techniques ◽  
Supercooled Liquid ◽  
Icosahedral Phase ◽  
Primary Phase ◽  
Atomic Configuration ◽  
Glassy Alloys ◽  
Metal Type ◽  
Metal Metal ◽  
Primary Precipitation

ABSTRACTThe glassy structure and the primary precipitation phase from supercooled liquid were examined in metal-metal type Zr-, Hf- and Cu-based alloy systems by various advanced analytical techniques. The icosahedral phase precipitates as the primary phase from supercooled liquid for all the metal-metal type glassy alloys examined in the present study. The icosahedral phase has a rhombic triacontahedra type for the Zr-Al-Ni-Cu-NM (NM=Ag, Pd, Au, Pt), Zr-Cu-NM, Hf-Al-Ni-Cu-NM, Cu-Zr-Ti-Pd and Cu-Hf-Ti alloys. In addition, the short-range atomic configurations in their glassy alloys have the features of highly dense packed atomic configuration, new local atomic configurations and long-range homogeneity with attractive interaction. It is therefore concluded that the high glass-forming ability of the metal-metal type alloys is due to the self-formation of the unique glassy structure with the above-described three features which are consistent with the formation of short-range icosahedral atomic configuration.

Ion Beam Manipulation to Fabricate Ordered Layered Structures and Amorphous Alloys in Some highly Immiscible Binary Metal Systems

2003 ◽  
Vol 792 ◽  
Author(s):  
X. Y. Li ◽  
R. F. Zhang ◽  
B. X. Liu
Keyword(s):  
Amorphous Alloys ◽  
Ion Beam ◽  
Amorphous State ◽  
Heat Of Formation ◽  
Average Magnetic Moment ◽  
Individual Layer ◽  
Ion Beam Mixing ◽  
Metal Metal ◽  
Fcc Phase ◽  
Beam Manipulation

ABSTRACTWe developed a new scheme, namely ion beam manipulation, i.e. interface-assisted ion beam mixing, for fabricating amorphous alloys and artificial solid-state microstructures in metal-metal multilayers, in which the individual layer thickness is down to about 2 nm, differing significantly from the typical thickness of 5–8 nm in conventional ion beam mixing. Employing the scheme, some interesting results were obtained in three highly immiscible systems. In the Ag-W system, which has the largest positive heat of formation among the transition metal alloys, amorphous alloys were obtained, for the first time, through a two-step structural transition, i.e. the initial polycrystalline Ag and W transformed into an intermediate bcc phase, which later transformed into an amorphous state. In the Ru-Pd system, the initial polycrystalline Pd and Ru first transformed into a single crystalline FCC phase, and then turned into a well-ordered structure, which showed an apparent tendency to transform back to the FCC phase upon over-irradiation. In the Ag-Co system, an ordered layered structure was observed and identified to consist of two overlapped FCC lattices, corresponding to a new magnetic state of Co atom with an average magnetic moment measured to be 2.84 μB, which was about twice the equilibrium datum and was the largest value ever observed. We present, in this paper, a brief review concerning the scheme of ion beam manipulation in fabricating the metastable alloys, the structural evolution upon ion irradiation and the associated magnetic properties of some ordered structures obtained by the scheme.

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