Migration and rotation of TiAl3 particles in an Al-melt solidified under high magnetic field conditions

Lou, Changsheng; Wang, Qiang; Wang, Chun‐Jiang; Liu, Tie; Nakajima, Keiji; He, Jicheng

doi:10.1016/j.jallcom.2008.04.023

Cited by 21 publications

(11 citation statements)

References 17 publications

(17 reference statements)

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“…Recently, high magnetic fields have been extensively used in the solidification process of metallic alloys as they can induce some interesting phenomena (Mikelson & Karklin, 1981;Savitsky et al, 1981;Rango et al, 1991;Yasuda et al, 2000;Asai, 2000;Han et al, 2007;Li et al, 2007Li et al, , 2008Lou et al, 2009;Wang et al, 2008). In most cases, these phenomena are directly visible with the aid of a microscope and can be accounted for on the basis of some classical electromagnetic solidification theories.…”

Section: Introductionmentioning

confidence: 99%

Crystallographic effect of a high magnetic field on a solidified hypoeutectic Zn–Al alloy

Zhang

et al. 2014

J Appl Cryst

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Hypoeutectic Zn-4.45 wt% Al solidified under a high magnetic field was investigated crystallographically. With the field, the primary zinc-rich phase is distributed homogeneously and orients with the c axis perpendicular to the magnetic field direction. These results are attributed to the magnetic viscosity resistance force and the magnetocrystalline anisotropy of zinc, respectively. The orientation modification also leads to a preferential alignment of the flat-shaped primary dendrites. Furthermore, with the field, the eutectic phase shows an orientation character similar to that of the primary phase. This arises from its continuous growth with the primary phase. In addition, a specific crystallographic orientation relationship ({0001} || {111} , h1210i || h110i ) exists in some of the eutectics (between the eutectic zinc-rich and aluminium-rich phases). However, this orientation relationship is related to the distribution of primary dendrites, which originates from the independent nucleation of the pseudo-primary phase attached to the primary dendrites.

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Section: Introductionmentioning

confidence: 99%

Crystallographic effect of a high magnetic field on a solidified hypoeutectic Zn–Al alloy

Zhang

et al. 2014

J Appl Cryst

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“…8,18 Each type of specimen was placed into an alumina crucible with an inner diameter of 6 or 10 mm and outer diameter of 9 or 15 mm, and heated under a constant flux of argon at a heating rate of 5 C/min to a temperature 150 C higher than the eutectic or liquidus temperatures of the alloy. The details of the experimental apparatus have been reported previously.…”

Section: Methodsmentioning

confidence: 99%

Distribution of alloying elements and the corresponding structural evolution of Mn–Sb alloys in high magnetic field gradients

Wang

Gao

et al. 2010

J. Mater. Res.

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The distribution of alloying elements and the corresponding structural evolution of Mn-Sb alloys in magnetic field gradients were investigated in detail. It was found that a high magnetic field gradient could control the distribution of solute element in the alloys during the solidification process and therefore resulted in the coexistence of both primary MnSb and Sb phases or the aggregation of the primary MnSb with a continuous change in morphology. The positions where these primary phases located depended on the direction of field gradient. The control of the solute element distribution by a high magnetic field gradient was realized through the magnetic buoyancy force that could drive the migration of Mn element in the melt, originating from the difference in the magnetic susceptibility between Mn and Sb. The effectiveness of this control depends on the alloy composition, specimen dimension, cooling rate, and jBdB/dzj value.

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“…Details of the experimental apparatus have been reported previously. [13,24] To obtain the previously mentioned magnetic field conditions, the specimens were placed, respectively above, at, and below the center of the magnet bore.…”

Section: Methodsmentioning

confidence: 99%

Effects of High Magnetic Fields on the Distribution and Alignment of Primary Phases in an Al-12Si-11.8Mg-6.5Ti Alloy

Liu

Wang

et al. 2010

Metall Mater Trans A

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Al-12Si-11.8Mg-6.5Ti alloy samples were solidified in high magnetic fields with various magnetic field gradients. The effects of high magnetic fields on the distribution and alignment of primary phases in the alloys were investigated. It was found that the uniform magnetic field could improve the homogeneity of the primary Mg 2 Si, whereas the magnetic field gradient caused the two-layer core grains ((Al,Si) 3 Ti and Ti 5 Si 4 ) to segregate at certain regions of the samples depending on the magnetic field gradient direction. The primary (Al,Si) 3 Ti strips were oriented with their c axes perpendicular to the magnetic field direction and aligned with their long axes along the magnetic field direction. The changes in the distribution of the primary Mg 2 Si and two-layer core grains were caused by the Lorentz force and magnetic force, which could counteract and cause the migration of these phases, respectively. The alignment of the primary (Al,Si) 3 Ti could be attributed to the combination of the magnetic orientation and solute redistribution.

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Migration and rotation of TiAl3 particles in an Al-melt solidified under high magnetic field conditions

Cited by 21 publications

References 17 publications

Crystallographic effect of a high magnetic field on a solidified hypoeutectic Zn–Al alloy

Crystallographic effect of a high magnetic field on a solidified hypoeutectic Zn–Al alloy

Distribution of alloying elements and the corresponding structural evolution of Mn–Sb alloys in high magnetic field gradients

Effects of High Magnetic Fields on the Distribution and Alignment of Primary Phases in an Al-12Si-11.8Mg-6.5Ti Alloy

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