Metals and Alloys

Hauptmann, Andreas

doi:10.1007/978-3-030-50367-3_7

Cited by 1 publication

(2 citation statements)

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“…It is indi tive of the short-range ordering of atomic arrangements and describes the proximity closeness of atoms to a central atom. The coordination number is a statistical method exploring the arrangement pattern of atoms' nearest neighbours, and an increase in coordination number indicates an increase in the local packing density of atoms [34,3 Figure 4 shows the variation of atomic coordination number with temperature under si ulated conditions. When the alloy contained 1% Fe, the coordination numbers of Fe-Fe and Cu-Fe ato remained relatively constant as the temperature decreased.…”

Section: Allotropic Analysismentioning

confidence: 99%

“…Cu-Fe alloys are significant amorphous alloy materials. Owing to their thermal stability and mechanical properties [1][2][3], such alloys have been extensively adopted in electronics, aerospace, automobiles, and other fields. As is well known, changes in the Fe content of Cu-Fe alloys have a significant influence on the alloy structure and properties.…”

Section: Introductionmentioning

confidence: 99%

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Molecular Dynamics Simulation Research on Fe Atom Precipitation Behaviour of Cu-Fe Alloys during the Rapid Solidification Processes

Wang,

Gao,

Jin

et al. 2024

Materials

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To explore the crystalline arrangement of the alloy and the processes involving iron (Fe) precipitation, we employed molecular dynamics simulation with a cooling rate of 2 × 1010 for Cu100-XFeX (where X represents 1%, 3%, 5%, and 10%) alloy. The results reveal that when the Fe content was 1%, Fe atoms consistently remained uniformly distributed as the temperature of the alloy decreased. Further, there was no Fe atom aggregation phenomenon. The crystal structure was identified as an FCC-based Cu crystal, and Fe atoms existed in the matrix in solid solution form. When the Fe content was 3%, Fe atoms tended to aggregate with the decreasing temperature of the alloy. Moreover, the proportion of BCC crystal structure exhibited no obvious changes, and the crystal structure remained FCC-based Cu crystal. When the Fe content was between 5% and 10%, the Fe atoms exhibited obvious aggregation with the decreasing temperature of the alloy. At the same time, the aggregation phenomenon was found to be more significant with a higher Fe content. Fe atom precipitation behaviour can be delineated into three distinct stages. The initial stage involves the gradual accumulation of Fe clusters, characterised by a progressively stable cluster size. This phenomenon arises due to the interplay between atomic attraction and the thermal motion of Fe-Fe atoms. In the second stage, small Fe clusters undergo amalgamation and growth. This growth is facilitated by non-diffusive local structural rearrangements of atoms within the alloy. The third and final stage represents a phase of equilibrium where both the size and quantity of Fe clusters remain essentially constant following the crystallisation of the alloy.

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Section: Allotropic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%