COMPUTER SIMULATION OF HYDROGENATED AND DEUTERATED CuTi AMORPHOUS ALLOYS

1985 ◽  
Vol 46 (C8) ◽  
pp. C8-415-C8-419
Author(s):  
B. Rodmacq ◽  
L. Billard ◽  
Ph. Mangin ◽  
A. Chamberod
Author(s):  
M.I. Mendelev ◽  
M.J. Kramer ◽  
S.G. Hao ◽  
K.M. Ho ◽  
C.Z. Wang

2008 ◽  
Vol 98 (4) ◽  
pp. 042022
Author(s):  
A V Bondarev ◽  
I L Bataronov ◽  
V V Ozherelyev ◽  
Yu V Barmin

Materials ◽  
2011 ◽  
Vol 4 (4) ◽  
pp. 716-781 ◽  
Author(s):  
Ariel A. Valladares ◽  
Juan A. Díaz-Celaya ◽  
Jonathan Galván-Colín ◽  
Luis M. Mejía-Mendoza ◽  
José A. Reyes-Retana ◽  
...  

1991 ◽  
Vol 02 (01) ◽  
pp. 523-526 ◽  
Author(s):  
O.S. TRUSHIN ◽  
P. NAYAK ◽  
V.S. STEPANYUK ◽  
A.A. KATSNELSON ◽  
A. SZASZ

Here we present the molecular-dynamics computer simulation for a few systems of Ni1−xPx (x=0.2,0.25), Fe1−xPx (x=0.24), and Fe1−xBx (x=0.15) to explore the dynamic phase transformation from liquid to amorphous state through rapid quenching and the structure of these alloys at atomic level. The truncated Morse potential has been used to model the interaction between the atoms. The results of computer simulation for the pair correlation function for these systems reveal some interesting features of the corresponding alloy going from the melt to amorphous state through fast cooling. Finally the analysis of Voronoy polyhedron statistic leads us to propose possible models for the structure at atomic level for these alloys in the amorphous state. For the Ni75P25 system it is also revealed that the metastable state depends on the method of preparation of the sample.


2010 ◽  
Vol 107 (7) ◽  
pp. 073505 ◽  
Author(s):  
M. I. Mendelev ◽  
M. J. Kramer

2008 ◽  
Vol 98 (4) ◽  
pp. 042007 ◽  
Author(s):  
A V Bondarev ◽  
I L Bataronov ◽  
V V Ozherelyev ◽  
Yu V Barmin ◽  
E V Lebedinskaya

Author(s):  
A.R. Pelton ◽  
A.F. Marshall ◽  
Y.S. Lee

Amorphous materials are of current interest due to their desirable mechanical, electrical and magnetic properties. Furthermore, crystallizing amorphous alloys provides an avenue for discerning sequential and competitive phases thus allowing access to otherwise inaccessible crystalline structures. Previous studies have shown the benefits of using AEM to determine crystal structures and compositions of partially crystallized alloys. The present paper will discuss the AEM characterization of crystallized Cu-Ti and Ni-Ti amorphous films.Cu60Ti40: The amorphous alloy Cu60Ti40, when continuously heated, forms a simple intermediate, macrocrystalline phase which then transforms to the ordered, equilibrium Cu3Ti2 phase. However, contrary to what one would expect from kinetic considerations, isothermal annealing below the isochronal crystallization temperature results in direct nucleation and growth of Cu3Ti2 from the amorphous matrix.


Author(s):  
A. K. Rai ◽  
R. S. Bhattacharya ◽  
M. H. Rashid

Ion beam mixing has recently been found to be an effective method of producing amorphous alloys in the binary metal systems where the two original constituent metals are of different crystal structure. The mechanism of ion beam mixing are not well understood yet. Several mechanisms have been proposed to account for the observed mixing phenomena. The first mechanism is enhanced diffusion due to defects created by the incoming ions. Second is the cascade mixing mechanism for which the kinematicel collisional models exist in the literature. Third mechanism is thermal spikes. In the present work we have studied the mixing efficiency and ion beam induced amorphisation of Ni-Ti system under high energy ion bombardment and the results are compared with collisional models. We have employed plan and x-sectional veiw TEM and RBS techniques in the present work.


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