Anomalous texture development induced by grain yielding anisotropy in Ni and Ni-Mo alloys

Han, Lijun; Jeurgens, Lars P. H.; Cancellieri, Claudia; Wang, Jing; Xu, Yifei; Huang, Yuan; Liu, Yongchang; Wang, Zumin

doi:10.1016/j.actamat.2020.09.063

Cited by 35 publications

(10 citation statements)

References 61 publications

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“…Ni (200) . Ni (111), which is consistent with the findings of Han et al 41 To further analyze the relationship of grain growth directions, and due to bad corrosion effect of Sample A, as a result samples B and C were further characterized by SEM-EBSD (as shown in Figure 10). With increasing energy density, the Ni (111) and Ni (110) diffraction peaks on the XZ and XY planes are significantly enhanced.…”

Section: Densification Behaviorsupporting

confidence: 83%

Influence of energy density on the microstructure and property regulation of additive manufactured pure nickel

Li,

Zhang,

Ren

et al. 2024

Advances in Mechanical Engineering

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In this work, laser powder bed fusion (LPBF) technology was used to fabricate pure nickel components, and the densification behavior and microstructure of pure nickel with different energy densities were investigated. The results indicate that for LPBF-fabricated pure nickel components, the relative density reaches a peak of 98.76% at an energy density of 101 J/mm3. With the increase of energy density, a large number of pores appear inside the grains, and the grains grow epitaxially along the building direction within multiple molten pools, pores gradually disappear after undergoing remelting at the edges of the melting tracks. Among these, competitive inward growth of columnar crystals may be the main cause of dislocations and new grain generation. The grains are primarily distributed along the Ni (111) or Ni (110) orientations, and with the increase of energy density, the grains with these two orientations increase. The surface energy follows the sequence of Ni (220) > Ni (200) > Ni (111). Due to the stacking of the <101> oriented main layer and the <001> oriented sub-layer in the building direction, the sample with higher energy density exhibits a strong Ni {110} texture, accompanied by increased tensile properties.

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Section: Densification Behaviorsupporting

confidence: 83%

Influence of energy density on the microstructure and property regulation of additive manufactured pure nickel

Li,

Zhang,

Ren

et al. 2024

Advances in Mechanical Engineering

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show abstract

“…Due to the mismatching relationship between the deposited film and substrate at low temperatures, the surface energy has a greater effect than the strain energy on the preferred orientation, which contributes to the preferred (200) orientation . However, the strain energy has a greater effect than the surface energy on the preferred orientation at high temperature; the enhanced mobility of adatoms will escape from the original position and recrystallize (111) grains. , Therefore, the TiN-HD has a transition from the preferred orientation to polycrystalline coexistence, which is beneficial to the formation of a compact film with smaller spherical particles.…”

Section: Resultsmentioning

confidence: 99%

“…39 However, the strain energy has a greater effect than the surface energy on the preferred orientation at high temperature; the enhanced mobility of adatoms will escape from the original position and recrystallize (111) grains. 40,41 Therefore, the TiN-HD has a transition from the preferred orientation to polycrystalline coexistence, which is beneficial to the formation of a compact film with smaller spherical particles.…”

Section: Resultsmentioning

confidence: 99%

Efficient Strategy for Radiative Cooling Based on Ultra-Broad-Band Infrared Regulation of Flexible Bilayer Film

Liang,

Ren,

Liu

et al. 2023

ACS Appl. Mater. Interfaces

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Flexible thermal radiation films with adjustable broad-band infrared radiation could maintain various heat-generating electronic devices working stably in corresponding operating temperatures, making them good candidates for radiative cooling (RC) material. However, the controllable radiation peaks of the metamaterial were narrow, and manipulation was a time-consuming and complex process. Herein, we design a simple TiN/Si bilayer film with controllable broad-band radiation peaks at a thermal radiation wavelength of 3.5−20 μm by impedance matching. Meanwhile, the different bilayer films applied to aluminum devices at different temperatures exhibit outstanding heat dissipation efficiency and maintain the corresponding equilibrium temperature to ensure that devices work stably for a long time. Moreover, the bilayer films deposited on the flexible PI substrates exhibit preferable thermostability and higher tensile strength than existing radiative cooling materials deposited on PDMS, PE, PMMA or TPX, etc. This work provides an effective strategy to realize efficient radiation cooling for flexible electronic devices and spacecraft appendages.

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“…It is also worth noting that only a few diffraction peaks can be detected in the XRD patterns. This may be related to the texture of the films during deposition due to surface energy minimization [19].…”

Section: Materials Library and Compositional Gradientmentioning

confidence: 99%

Combinatorial development of antibacterial FeCoCr-Ag medium entropy alloy

et al. 2023

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Antibacterial activity and mechanical properties of FeCoCr-Ag medium entropy alloys were studied via combinatorial fabrication paired with high-throughput characterizations. It was found that the antibacterial activity and mechanical properties exhibit non-linear dependence on the content of Ag addition. Within the studied alloys, (FeCoCr)80Ag20 possesses an optimized combination of different properties for potential applications as antibacterial coating materials. The underlying mechanism is ascribed to the formation of a dual-phase structure that leads to competition between the role of Ag phase and FeCoCr phase at different Ag content. The results not only demonstrate the power and effectiveness of combinatorial methods in multi-parameter optimization but also indicate the potential of high entropy alloys as antibacterial materials.

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Anomalous texture development induced by grain yielding anisotropy in Ni and Ni-Mo alloys

Cited by 35 publications

References 61 publications

Influence of energy density on the microstructure and property regulation of additive manufactured pure nickel

Influence of energy density on the microstructure and property regulation of additive manufactured pure nickel

Efficient Strategy for Radiative Cooling Based on Ultra-Broad-Band Infrared Regulation of Flexible Bilayer Film

Combinatorial development of antibacterial FeCoCr-Ag medium entropy alloy

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