scholarly journals Radiation effects in amorphous metallic alloys. Progress report, February 1, 1980-January 31, 1981

1980 ◽  
Author(s):  
R.B. Murray ◽  
J.J. Kramer ◽  
D.G. Onn
Keyword(s):  
Radiation Effects ◽  
Progress Report ◽  
Metallic Alloys ◽  
Amorphous Metallic Alloys

scholarly journals Radiation Effects in Amorphous Metallic Alloys as Revealed by Mössbauer Spectrometry: Part II. Ion Irradiation

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1309
Author(s):  
Marcel Miglierini
Keyword(s):  
Heavy Ions ◽  
Radiation Effects ◽  
Ion Irradiation ◽  
Active Regions ◽  
Mössbauer Spectrometry ◽  
Metallic Alloys ◽  
Conversion Electrons ◽  
Amorphous Metallic Alloys ◽  
Mossbauer Spectrometry ◽  
Light Ions

Due to their excellent magnetic properties, amorphous metallic alloys (AMAs) are considered for the construction of magnetic cores of radio-frequency cavities in accelerators. Here, they might be exposed to ion bombardment. The influence of irradiation by both light and heavy ions featuring low and high energies, respectively, is followed by the techniques of 57Fe Mössbauer spectrometry. Modifications of surface layers in selected Fe-containing AMAs after ion irradiation are unveiled by detection of conversion electrons and photons of characteristic radiation whereas those in their bulk are derived from standard transmission spectra. Rearrangement of microstructure which favors the formation of magnetically active regions, is observed in surface regions bombarded by light ions. Heavy ions caused pronounced effects in the orientation of net magnetization of the irradiated samples. No measurable impact upon short-range order arrangement was observed. Part I of this paper is devoted to radiation effects in Fe-based AMAs induced by neutron irradiation.

scholarly journals Radiation Effects in Amorphous Metallic Alloys as Revealed by Mössbauer Spectrometry: Part I. Neutron Irradiation

Metals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 845
Author(s):  
Marcel B. Miglierini
Keyword(s):  
Neutron Irradiation ◽  
Radiation Effects ◽  
Ion Irradiation ◽  
Hyperfine Magnetic Field ◽  
Mössbauer Spectrometry ◽  
Metallic Alloys ◽  
Hyperfine Fields ◽  
Spectral Parameters ◽  
Amorphous Metallic Alloys ◽  
Mossbauer Spectrometry

Iron-based amorphous metallic alloys (AMAs) of several compositions were exposed to neutron irradiation with fluences of up to 1019 n/cm2. These materials exhibit excellent magnetic properties which predetermine them for use in electronic devices operated also in radiation-exposed environments. Response of the studied AMAs to neutron irradiation is followed by Mössbauer spectrometry which probes the local microstructure. Neutron irradiation leads to rearrangement of constituent atoms, their clustering, and formation of stress centers. The observed modifications of topological short-range order result in changes of spectral parameters including average hyperfine magnetic field, , standard deviation of the distribution of hyperfine fields, and position of the net magnetic moment. After irradiation, especially differences in -values develop in two opposite directions. This apparent controversy can be explained by formation of specific atomic pairs with different exchange interactions, which depend on the composition of the samples. Part II of this paper will be devoted to radiation effects caused in Fe-based AMAs by ion irradiation.

TEM study of amorphization of Cu and Ti foils by cold-rolling

1990 ◽  
Vol 48 (4) ◽  
pp. 146-147
Author(s):  
W. A. Chiou ◽  
N. L. Jeon ◽  
Genbao Xu ◽  
M. Meshii
Keyword(s):  
Solid State ◽  
Cold Rolling ◽  
High Energy ◽  
Rapid Quenching ◽  
Vapor Condensation ◽  
Metallic Alloys ◽  
Solid State Reactions ◽  
High Energy Particle ◽  
Amorphous Metallic Alloys ◽  
Thin Foils

For many years amorphous metallic alloys have been prepared by rapid quenching techniques such as vapor condensation or melt quenching. Recently, solid-state reactions have shown to be an alternative for synthesizing amorphous metallic alloys. While solid-state amorphization by ball milling and high energy particle irradiation have been investigated extensively, the growth of amorphous phase by cold-rolling has been limited. This paper presents a morphological and structural study of amorphization of Cu and Ti foils by rolling.Samples of high purity Cu (99.999%) and Ti (99.99%) foils with a thickness of 0.025 mm were used as starting materials. These thin foils were cut to 5 cm (w) × 10 cm (1), and the surface was cleaned with acetone. A total of twenty alternatively stacked Cu and Ti foils were then rolled. Composite layers following each rolling pass were cleaned with acetone, cut into half and stacked together, and then rolled again.

scholarly journals Multicycle electroimpulse fatigue of amorphous metallic alloys

2018 ◽  
Vol 1115 ◽  
pp. 052016
Author(s):  
V A Fedorov ◽  
T N Pluzhnikova ◽  
A D Berezner
Keyword(s):  
Metallic Alloys ◽  
Amorphous Metallic Alloys

Optical Properties of Amorphous Metallic Alloys

1978 ◽  
Vol 40 (26) ◽  
pp. 1733-1736 ◽  
Author(s):  
E. Hauser ◽  
R. J. Zirke ◽  
J. Tauc ◽  
J. J. Hauser ◽  
S. R. Nagel
Keyword(s):  
Optical Properties ◽  
Metallic Alloys ◽  
Amorphous Metallic Alloys
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