Glass transition of aluminum melt. Molecular dynamics study

Study on the Influence of Factors on the Structure and Mechanical Properties of Amorphous Aluminium by Molecular Dynamics Method

“…rough the process of researching and investigating the structure and the mechanical property of amorphous aluminium with N � 3000, 5000, 7000, and 9000 atoms at temperature T � 300 K and amorphous aluminium with N � 3000 atoms at temperature T � 300, 500, 700, 900, 1100, 1300, and 1500 K, we have the following conclusion: with the Sutton-Chen embedded interaction potential, the periodic boundary condition, and selected parameters, the obtained structural results are in good agreement with previous results [27][28][29][30][31]. e influence of the number of atoms and temperature on the structure and the mechanical property of amorphous aluminium is caused by the size effect.…”

“…According to Figure 1 and Table 2, when the number of atoms increases from N � 3000 atoms to N � 5000, 7000, and 9000 atoms, the first peak of RDF dominates, and the position of this peak changes very little from r � 2.76 to r � 2.78Å. Other simulation results are r � 2.8Å, 2.85Å [27,29], 2.75Å [28,30], and the experimental data is r � 3.24 [31]. is result shows that the bulk aluminium sample does not exist in the long order but always exists in the near order, and the distance between atoms changes very little.…”

“…ese results show that, in crystalline aluminium, the position of the first peak for the radial distribution function changes from 2.8Å to 2.85Å [27,29], in amorphous aluminium, this position decreases to 2.75Å [28,30], and the experimental data is 3.24Å [31]. Besides, our understanding of the mechanism of phase transition from the amorphous state to the liquid state still has many limits.…”

Atomic structure evolutions and mechanisms of the crystallization pathway of liquid Al during rapid cooling

“…A generally accepted definition of the glass transition temperature T g is now not available, and several methods can be used to determine the critical temperature T g , as proposed in ref. 30 . In the present work, we simply set T g = T e .…”

Collective behaviour of a glass-forming film of pure aluminium

“…Different approaches give different criteria and results. This article is dedicated to the study of the problem of searching for glass transition signs [6].…”