Electromagnetic shaping and solidification control of Ni-base superalloys under vacuum

Fu, Hengzhi; Shen, Jun; Liu, L.; Hao, Qitang; Li, S.M.; Li, J.S.

doi:10.1016/j.jmatprotec.2003.11.039

Cited by 19 publications

(7 citation statements)

References 6 publications

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“…3, Ti-47Al sample with 20 mm in diameter is shaped by EMCDS and larger-scale sample is endeavored to be obtained further. It is largely attributed to that electromagnetic force is the main force used to confine the molten zone [11]. Fig.…”

Section: Lamellar Alignment In Emcdsmentioning

confidence: 99%

“…Electromagnetic confinement and directional solidification (EMCDS), as a type of electromagnetic processing, has been widely researched to obtain non-contamination samples of stainless steel and Ni-based superalloys over the years [10,11]. As the main force used to confine the molten zone is electromagnetic force rather than surface tension, samples with 18 mm in diameter were obtained successfully.…”

Section: Introductionmentioning

confidence: 99%

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Lamellar microstructure alignment and fracture toughness in Ti–47Al alloy by electromagnetic confinement and directional solidification

Shen

Xiong

et al. 2015

Materials Science and Engineering: A

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Section: Lamellar Alignment In Emcdsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Lamellar microstructure alignment and fracture toughness in Ti–47Al alloy by electromagnetic confinement and directional solidification

Shen

Xiong

et al. 2015

Materials Science and Engineering: A

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“…Conditions (1) and (2), with the function j 0 compactly supported in X, imply the existence of the flux function u : X ! R such that B ¼ @u @x 2 ; À @u @x 1 ; 0 , with u solution of:…”

Section: The Mathematical Model Of the Electromagnetic Casting Problemmentioning

confidence: 99%

“…The number of operations of steps(1)and(4)is related only to the number of elements of the boundary mesh. The number of operations of step(3)is also related to the number of cells of the domain mesh, but the ordering operations of this step can be performed in significantly less time than the operations of step(2).…”

mentioning

confidence: 99%

A new method for inverse electromagnetic casting problems based on the topological derivative

Canelas¹,

Novotny

Roche

2011

Journal of Computational Physics

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International audienceThe inverse electromagnetic casting problem consists in looking for a suitable set of electric wires such that the electromagnetic field induced by an alternating current passing through them, makes a given mass of liquid metal acquire a predefined shape. In this paper we propose a method for the topol-ogy design of such inductors. The inverse electromagnetic casting problem is formulated as an optimization problem, and topological derivatives are considered in order to locate new wires in the right position. Several numerical examples are presented showing that the proposed technique is effective to design suitable inductors

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“…the liquid melt release heat from the mould through the sprue [14] . Therefore, direct vibrations on the liquid melt by ultrasonic [15] , vibration injection molding [16] or electromagnetism [17,18] were used to improve the quality of castings.…”

mentioning

confidence: 99%

Reduction of shrinkage porosities in aluminum alloy castings by external pressure fluctuation under gravity field

Wu¹,

Wang²,

Wang³

et al. 2018

China Foundry

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S hrinkage porosity is one of the typical and most common defects in castings, which can deteriorate the properties of produced castings. It is very difficult to reduce the defects through subsequent thermomechanical treatments [1] or forging process [2] , especially for defects formed in the near-net shape casting process. A lot of research has been done to extend the service life of castings by reducing the shrinkage porosity in the castings [3-8]. Generally, this kind of defects are caused by insuffi cient feeding pressure or obstruction of the feeding channel [9-12]. The studies of many investigators show that vibration can improve the casting quality since Chernov first successfully refined grains of steel castings by gentle vibration of the mould. The application of vibration to the mould is one of the most convenient methods to improve casting quality [13]. However, there still are some drawbacks, and one example is that vibration with low frequency during the solidifi cation process usually makes

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Electromagnetic shaping and solidification control of Ni-base superalloys under vacuum

Cited by 19 publications

References 6 publications

Lamellar microstructure alignment and fracture toughness in Ti–47Al alloy by electromagnetic confinement and directional solidification

Lamellar microstructure alignment and fracture toughness in Ti–47Al alloy by electromagnetic confinement and directional solidification

A new method for inverse electromagnetic casting problems based on the topological derivative

Reduction of shrinkage porosities in aluminum alloy castings by external pressure fluctuation under gravity field

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