Mechanical characteristics of laser-deposited sandwich structures and quasi-homogeneous alloys of Fe-Cu system

Makarenko, Konstantin; Konev, Stepan; Dubinin, Oleg N.; Shishkovsky, Igor

doi:10.1016/j.matdes.2022.111313

Cited by 9 publications

(2 citation statements)

References 60 publications

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“…Generally, if a curve veers away from a straight line without any sudden shifts, it suggests that the system is amorphous. However, if the curve veers away from a straight line and there are sudden shifts, it suggests that the system is crystalline [23,24]. The plot in Figure 1 shows the average potential energy curves for Fe contents of 1%, 3%, 5%, and 10% as a function of temperature.…”

Section: Average Atomic Potential Energymentioning

confidence: 99%

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: Average Atomic Potential Energymentioning

confidence: 99%

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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“…Many AM technologies have been developed, and the most notable for metallic materials are selective laser melting (SLM) [3], direct laser deposition (DLD) [4,5], electron beam melting (EBM) [6], and wire arc additive manufacturing (WAAM) [7,8]. Among these methods, DLD offers unique capacities like an excellent balance between the productivity and surface quality, the ability to build large-scale parts, and the capacity of multi-material fabrication [5,[9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Cracking Behavior of the ZhS6K Superalloy during Direct Laser Deposition with Induction Heating

Dmitrieva,

Semenyuk,

Klimova

et al. 2024

Metals

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For this work, the behavior of the ZhS6K alloy (Russian grade) in the process of direct laser deposition was investigated. Two samples, a “small” one (40 × 10 × 10 mm3) and “large” one (80 × 16 × 16 mm3), were fabricated with direct laser deposition. In both samples, the typical dual-phase γ/γ҆ microstructure with cuboidal shape of the γ҆ precipitates was observed. Both specimens revealed a similar tendency to continuous increasing in hardness from the bottom to the top associated with the refinement of γ҆ precipitates. The “small” sample was essentially crack-free, while the “large” one underwent extensive cracking. The possible effects of various factors, including thermal history, size, and shape of the gamma grains, on cracking behavior were discussed.

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Improved strength in nickel‑aluminum bronze/steel bimetallic component fabricated using arcing-wire arc additive manufacturing with alternating deposition strategy

Liu,

Miao,

Wang

et al. 2024

Journal of Manufacturing Processes

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Mechanical characteristics of laser-deposited sandwich structures and quasi-homogeneous alloys of Fe-Cu system

Cited by 9 publications

References 60 publications

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

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

Cracking Behavior of the ZhS6K Superalloy during Direct Laser Deposition with Induction Heating

Improved strength in nickel‑aluminum bronze/steel bimetallic component fabricated using arcing-wire arc additive manufacturing with alternating deposition strategy

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