3D FE analysis on the product defects of composites formed by liquid–solid extrusion process

Wang, Zhenjun; Qi, Lehua; Zhou, Jiming

doi:10.1016/j.jmatprotec.2008.04.070

Cited by 8 publications

(3 citation statements)

References 17 publications

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“…The finite element method was used for the elastic and plastic analysis of the amorphous alloy strip formed by ditch rolling, and the software used was Simufact.Forming 10.0.1 [11]. Here, two assumptions were applied in the calculation.…”

Section: Fem Analysismentioning

confidence: 99%

Warm Rolling Technique for Amorphous Alloy Strip Produced by Ultrarapid Cooling-Thermal Spraying Based on Hydraulic-Stress-Induced Structural Relaxation

Kurahashi¹,

Morimoto²,

Fukudome³

et al. 2014

MSF

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Amorphous alloys have many superior properties such as high tensile strength,anticorrosion and easy soft-magnetism, but few amorphous alloys have been used as final productsbecause they lack plasticity at room temperature. Thus, we have developed a new amorphous alloyrolling method. Although the amorphous alloy was brittle at room temperature, it has deformedplastically by semisolid rolling under hydraulic stress. After being subjected to ultrarapidcooling-thermal spraying, amorphous alloy strips were rolled with a ditch roll in the viscoelasticregion below the glass transition temperature. Using this rolling method, we successfully preformedstrips for use in fuel cell separator. This rolling technique is based on the principle of stress-inducedstructural relaxation under hydraulic stress.

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Section: Fem Analysismentioning

confidence: 99%

Warm Rolling Technique for Amorphous Alloy Strip Produced by Ultrarapid Cooling-Thermal Spraying Based on Hydraulic-Stress-Induced Structural Relaxation

Kurahashi¹,

Morimoto²,

Fukudome³

et al. 2014

MSF

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show abstract

“…The process exhibits lower deforming forces, less thermo-mechanical impact on mould, fewer product defects, and higher capability for near net shaping compared to conventional hot forging [8,9]. Thus, the use of this technology enables production of complex nanocomposite parts.…”

Section: Introductionmentioning

confidence: 99%

Constitutive behavior of Al2O3np/Al7075 composites with a high solid fraction for thixoforming

Chen

Yan

2017

Journal of Alloys and Compounds

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The thixotropic compression tests of nano-Al 2 O 3 (Al 2 O 3np) /Al7075 composites with different particle sizes and contents and containing a high fraction of solid, were conducted under conditions of 560-590 °C and 0.01-5 s-1 , and the microstructures were observed. A visco-plastic constitutive model of nanoparticle reinforced composites for thixoforming was proposed, considering the coupling effects of strain, strain rate, deformation temperature and liquid fraction and presence of nanoparticles, to describe constitutive behavior of the composites under various deformation conditions. Furthermore, the influence of deformation parameters on thixoforming was investigated. It could be shown that the predictions by the developed model were consistent with experimental results. Fracture analysis of the thixotropic compression samples revealed that high deformation temperature or/and high strain rate could prompt continuous uniform distribution of the liquid phase along the grain boundary, causing the formation of a thin liquid film around an approximately spherical grain, accordingly improving thixoformability of the

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“…Most of metal matrix composites (MMCs) have to be secondarily processed into structural parts. Processing MMCs above the solidus temperature of the matrix alloy have several merits in contrast to hot forming processes, including the feasible formability, low deforming force and low thermomechanical impact on moulds [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Constitutive behavior of Csf/AZ91D composites compressed at elevated temperature and containing a small fraction of liquid

Wang

Zhou

et al. 2011

Composites Science and Technology

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3D FE analysis on the product defects of composites formed by liquid–solid extrusion process

Cited by 8 publications

References 17 publications

Warm Rolling Technique for Amorphous Alloy Strip Produced by Ultrarapid Cooling-Thermal Spraying Based on Hydraulic-Stress-Induced Structural Relaxation

Warm Rolling Technique for Amorphous Alloy Strip Produced by Ultrarapid Cooling-Thermal Spraying Based on Hydraulic-Stress-Induced Structural Relaxation

Constitutive behavior of Al2O3np/Al7075 composites with a high solid fraction for thixoforming

Constitutive behavior of Csf/AZ91D composites compressed at elevated temperature and containing a small fraction of liquid

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