Effects of high static magnetic field on distribution of solid particles in BiZn immiscible alloys with metastable miscibility gap

Zheng, Tianxiang; Zhong, Yunbo; Lei, Zuosheng; Ren, Weili; Ren, Zhongming; Debray, F.; Beaugnon, Eric; Fautrelle, Yves

doi:10.1016/j.jallcom.2014.10.095

Cited by 33 publications

(10 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is necessary to design new methods to fabricate immiscible alloys with a uniform dispersive microstructure. To control the liquid-liquid phase separation, many experimental methods have been designed, such as rapid cooling [9,10], directional solidification [11,12], high static magnetic field [12,13], and other routes [14][15][16]. Nevertheless, some methods are hard to apply in industry due to harsh conditions during the experimental procedure.…”

Section: Introductionmentioning

confidence: 99%

Effect of Rare-Earth Ce on Macrosegregation in Al-Bi Immiscible Alloys

Man

Zhang

et al. 2016

Metals

View full text Add to dashboard Cite

Liquid phase segregation of immiscible alloys has been investigated for decades. In this work, rare-earth Ce was studied as an additive for Al-Bi immiscible alloys. The addition of Ce restrained liquid phase segregation to obtain a uniformly dispersive microstructure. The experimental results indicated that in situ-precipitated intermetallic CeBi 2 compound acted as an inoculant for the heterogeneous nucleation of the Bi-rich droplets. The Bi-rich droplets nucleated on the CeBi 2 compound surface-a homogenous dispersed microstructure obtained via a heterogeneous nucleation route. We concluded that gravity segregation can be suppressed by the addition of rare-earth Ce.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Rare-Earth Ce on Macrosegregation in Al-Bi Immiscible Alloys

Man

Zhang

et al. 2016

Metals

View full text Add to dashboard Cite

show abstract

“…In fact, SHSMF affects the Hartman number which is used to calculate the effective dynamic viscosity of liquid matrix. That is η eff = η ·Ha/3 = B · L ·( ση ) 0.5 /3 23,24 , where Ha is the Hartman number and is calculated to be 2830.4 which greater than 1. In addition, B is the magnetic flux density, σ is the electrical conductivity of liquid matrix and is estimated to be 3.25 × 10 4 Ω −1 ·cm −1 at 577 °C 22 , L is the characteristic length and is 8 mm which is the diameter of the sample).…”

Section: Resultsmentioning

confidence: 99%

Solute trapping in Al-Cu alloys caused by a 29 Tesla super high static magnetic field

Zheng

Zhou

Zhong

et al. 2019

Sci Rep

View full text Add to dashboard Cite

Solidification of Al-Cu alloys has been investigated using a 29 Tesla super high static magnetic field (SHSMF). The results show that, by imposing a 29 Tesla SHSMF, the size of primary phases and spacing of eutectic structure have been refined through the increase of undercooling which results from the suppression of diffusion coefficient. The diffusion coefficient of atoms in the liquid matrix decreases to be about 1.2 × 10−12 m2/s. The lattice constants are reduced and high dislocation density forms in the primary phase, which induces a solute trapping effects. The spacing of (110) plane in Al2Cu is corrected to be 4.3123 Å and 4.2628 Å for Al-40 wt.%Cu alloys treated without and with a SHSMF. The spacing of (111) plane in Al is corrected to be 2.3351 Å and 2.3258 Å for Al-26 wt.%Cu alloys treated without and with a SHSMF. The compression yield strength has been improved by about 42% from 268 MPa to 462 MPa for Al-26 wt.%Cu and 42.5% from 248 MPa to 431 MPa for Al-40 wt.%Cu. The maximum elastic strain increases from about 2% to 4.3% for Al-26 wt.%Cu and from 2% to 4% for Al-40 wt.%Cu. It is expected that SHSMF is beneficial to process materials with high mechanical properties.

show abstract

“…If the coalescence is inhibited, the droplets will reach a finer dispersion [67]. Zheng et al [68] carried out a large number of solidification experiments on Bi-Zn immiscible alloy under the HMF above 1 T, and they found that the HMF can reduce the rate of coalescence of minority phase droplets, thereby reducing the macro-segregation of the phase. Wei et al [69] studied the non-equilibrium solidification of Cu-Co immiscible alloy under HMF and thought that the melt flow was only restrained by the Lorentz force perpendicular to the direction of the magnetic field.…”

Section: Hmf Effects On Coarsening and Coagulation Process Of Immiscimentioning

confidence: 99%

“…Zhang et al [68] performed an in situ quenching solidification experiment for BiZn immiscible alloy under HMF. It was found that Stokes and Marangoni motion resulted in segregation of the minority phase when the magnetic field intensity was lower than 17.4 T. However, under the effect of 29 T HMF, the segregation within the alloy barely existed due to the complete inhibition of Marangoni migration of the minority phase.…”

Section: Microstructure Of Immiscible Alloys Modified By Hmf 351 Hmentioning

confidence: 99%

Solidification of Immiscible Alloys under High Magnetic Field: A Review

Chen

Wang

et al. 2021

Metals

View full text Add to dashboard Cite

Immiscible alloy is a kind of functional metal material with broad application prospects in industry and electronic fields, which has aroused extensive attention in recent decades. In the solidification process of metallic material processing, various attractive phenomena can be realized by applying a high magnetic field (HMF), including the nucleation and growth of alloys and microstructure evolution, etc. The selectivity provided by Lorentz force, thermoelectric magnetic force, and magnetic force or a combination of magnetic field effects can effectively control the solidification process of the melt. Recent advances in the understanding of the development of immiscible alloys in the solidification microstructure induced by HMF are reviewed. In this review, the immiscible alloy systems are introduced and inspected, with the main focus on the relationship between the migration behavior of the phase and evolution of the solidification microstructure under HMF. Special attention is paid to the mechanism of microstructure evolution caused by the magnetic field and its influence on performance. The ability of HMF to overcome microstructural heterogeneity in the solidification process provides freedom to design and modify new functional immiscible materials with desired physical properties. This review aims to offer an overview of the latest progress in HMF processing of immiscible alloys.

show abstract

Effects of high static magnetic field on distribution of solid particles in BiZn immiscible alloys with metastable miscibility gap

Cited by 33 publications

References 18 publications

Effect of Rare-Earth Ce on Macrosegregation in Al-Bi Immiscible Alloys

Effect of Rare-Earth Ce on Macrosegregation in Al-Bi Immiscible Alloys

Solute trapping in Al-Cu alloys caused by a 29 Tesla super high static magnetic field

Solidification of Immiscible Alloys under High Magnetic Field: A Review

Contact Info

Product

Resources

About