Medium‐range order and physical properties of Cu–20at.% Sb melts

Guo, Fengxiang; Qin, Jingyu; Qin, Xubo; Yan, Jia; Xu, Rongfu; Tian, Xuelei

doi:10.1016/j.jnoncrysol.2012.09.007

Cited by 11 publications

(1 citation statement)

References 40 publications

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“…The low maximum of the g SiSr ( r ) curve is no more than 2, which demonstrates the weak interaction between Si–Sr pairs. Moreover, the chemical short-range order (CSRO) parameter for Sb–Sr pair α SbSb was −1.410 according to α AB = 1– N AB /( c B N AA + c B N AB + c B N AC ), where c B was the concentration of B component, N AA , N AB , and N AB are PCNs of g AA ( r ), g AB ( r ), and g AC ( r ) curves [ 29 ], respectively. This value reveals the strong affinity between the Sb–Sr pair.…”

Section: Resultsmentioning

confidence: 99%

The Formation of Nanoparticles and Their Competitive Interaction with Twins during Eutectic Si Growth

et al. 2018

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In order to investigate the competitive interaction between nanoparticles and twin, the eutectic Si microstructures in Al–10Si (wt. %) base alloys with exclusive and combined addition of Sr and Sb are characterized by combined TEM and atom probe tomography (APT). The chemical short range order in Sb–Sb and Sb–Sr pairs is revealed by ab initio molecular dynamics simulation, which promotes the formation of clusters and nanoparticles. The coexistence of nanoparticles and twins is observed in Sb containing alloys, with a negative correlation in the corresponding number density, owing to the competitive stacking of precursors and individual atoms at the solid–liquid interface. Large size particles around 70 nm with a uniform distribution of Sr atoms are formed in Al–10Si–0.35Sb–0.015Sr (wt. %) alloys, due to the precursor aggregation and homogeneous nucleation in the droplets that nucleation are depressed. A model for the formation of nanoparticles and their interaction with twins is proposed.

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Section: Resultsmentioning

confidence: 99%

The Formation of Nanoparticles and Their Competitive Interaction with Twins during Eutectic Si Growth

et al. 2018

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Influences of ion bombardment, grain size, and gamma irradiation on surface topography, microstructural, and mechanical characteristics of Cu-2 wt% Sb alloy

Soliman,

Sobhy

2024

Appl. Phys. A

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The Cu-2 wt% Sb alloy was prepared and exposed to various heat treatments at temperatures ranging from 573 to 973 K to get distinct grain diameters. Different samples of various grain diameters were individually sputtered in an argon glow discharge for various times (0.5, 1, 2 h) using a DC magnetron sputtering device. The surface topography and microstructural features of a Cu-2 wt% Sb alloy were examined utilizing an optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The $$Cu_{3} Sb$$ C u 3 S b IMC phase was found to segregate at the grain boundaries. Results showed that the topographical features of sputtered samples (grain boundaries, tiny cones, cratered cones, and etch pits) were mainly affected by grain size and sputtering time. Moreover, the mechanical properties of a Cu-2 wt% Sb alloy were examined. The parameters of the stress–strain curves (Young modulus Y, 0.2% offset stress σy0.2, fracture stress σf, parabolic work-hardening coefficient $${\upchi }_{{\text{p}}}$$ χ p , and ductility $${\upvarepsilon }_{{\text{f}}} {\text{\% }}$$ ε f \% ) were measured under different testing conditions. Generally, these stress parameters decrease as the grain diameter increases. These parameters, with the exception of $${\upvarepsilon }_{{\text{f}}} {\text{\% }}$$ ε f \% , increase as the strain rate increases, while $${\upvarepsilon }_{{\text{f}}} {\text{ \% }}$$ ε f \% decreases as the strain rate increases. Additionally, selective samples of the present alloy were irradiated using γ-radiation with different doses 0.5, 1, 1.5, and 2 MGy. The Vickers microhardness of annealed and irradiated samples lowered as the grain size augmented, while it increased as the irradiation dose increased. Based on the obtained activation energy Q value of 20.65 kJ/mol., it is indicated that the predominant deformation mechanism in the Cu-2 wt% Sb alloy is the motion of dislocation through the Cu-matrix.

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Structure of liquid Cu–Sb alloys by ab initio molecular dynamics simulations, high temperature X-ray diffraction, and resistivity

et al. 2013

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Medium‐range order and physical properties of Cu–20at.% Sb melts

Cited by 11 publications

References 40 publications

The Formation of Nanoparticles and Their Competitive Interaction with Twins during Eutectic Si Growth

The Formation of Nanoparticles and Their Competitive Interaction with Twins during Eutectic Si Growth

Influences of ion bombardment, grain size, and gamma irradiation on surface topography, microstructural, and mechanical characteristics of Cu-2 wt% Sb alloy

Structure of liquid Cu–Sb alloys by ab initio molecular dynamics simulations, high temperature X-ray diffraction, and resistivity

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