A multi-field coupled FEM model for one-step-forming process of spark plasma sintering considering local densification of powder material

Song, Yu; Li, Yuanyuan; Zhou, Zhaoyao; Lai, Yangen; Ye, Yongquan

doi:10.1007/s10853-011-5515-7

Cited by 51 publications

(35 citation statements)

References 19 publications

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“…Theoretical densities of the sintered SiC-ZrB 2 composites were calculated on the basis of the rule of mixtures (3.217 g/cm 3 for β-SiC and 6.085 g/cm 3 for ZrB 2 ). The final sintered SiC-ZrB 2 composites were ground with a diamond wheel and shaped into disks.…”

Section: Physical Characteristicsmentioning

confidence: 99%

“…The disks were machined to obtain sintered SiC-ZrB 2 composite bars with dimensions of 1.0×0.7×10 mm 3 . The bars were polished using 1 µm diamond paste and beveled at 45° for mechanical testing (ASTM F394-78).…”

Section: Physical Characteristicsmentioning

confidence: 99%

“…SPS is known as a single-step processing technique, which combines the electric field sintering technique and the uniaxial pressing forming technique. Some important technological benefits of SPS, such as higher heating rates, fewer processing steps, elimination of the need for sintering aids, and near net shape capacity, facilitate the control of grain growth and improve the mechanical, chemical, and physical properties of power materials [3].…”

Section: Introductionmentioning

confidence: 99%

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Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB₂Composites

Lee¹,

Kim²,

Kang³

et al. 2013

Journal of Electrical Engineering and Technology

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-Silicon carbide (SiC)-zirconium diboride (ZrB 2 ) composites were prepared by subjecting a 60:40 vol% mixture of β-SiC powder and ZrB 2 matrix to spark plasma sintering (SPS) in 15 mmΦ and 20 mmΦ molds. The 15 mmΦ and 20 mmΦ compacts were sintered for 60 sec at 1500 °C under a uniaxial pressure of 50 MPa and argon atmosphere. Similar composites were simulated using Flux ® 3D computer simulation software. The current and power densities of the specimen sections of the simulated SiC-ZrB 2 composites were higher than those of the mold sections of the 15 mmΦ and 20 mmΦ mold simulated specimens. Toward the centers of the specimen sections, the current densities in the simulated SiC-ZrB 2 composites increased. The power density patterns of the specimen sections of the simulated SiC-ZrB 2 composites were nearly identical to their current density patterns. The current densities of the 15 mmΦ mold of the simulated SiC-ZrB 2 composites were higher than those of the 20 mmΦ mold in the center of the specimen section. The volume electrical resistivity of the simulated SiC-ZrB 2 composite was about 7.72 times lower than those of the graphite mold and the punch section. The power density, 1.4604 GW/m 3 , of the 15 mmΦ mold of the simulated SiC-ZrB 2 composite was higher than that of the 20 mmΦ mold, 1.3832 GW/m 3 . The ZrB 2 distributions in the 20 mmΦ mold in the sintered SiC-ZrB 2 composites were more uniform than those of the 15 mmΦ mold on the basis of energy-dispersive spectroscopy (EDS) mapping. The volume electrical resistivity of the 20 mmΦ mold of the sintered SiC-ZrB 2 composite, 6.17 × 10 -4 Ω cm, was lower than that of the 15 mmΦ mold, 9.37 × 10 -4 Ω ·cm, at room temperature.

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Section: Physical Characteristicsmentioning

confidence: 99%

Section: Physical Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB₂Composites

Lee¹,

Kim²,

Kang³

et al. 2013

Journal of Electrical Engineering and Technology

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“…However, in the FAST-machine the powder material undergoes large plastic deformation. Recently [33][34][35] dealt with the densification process. In [33] an additive decomposition of the strain-rate tensor is used for the constitutive model into an elastic, viscoplastic and a thermal part.…”

Section: Introductionmentioning

confidence: 99%

“…Recently [33][34][35] dealt with the densification process. In [33] an additive decomposition of the strain-rate tensor is used for the constitutive model into an elastic, viscoplastic and a thermal part. The relative density is computed by the mass balance, which is only valid as an approximation, see the discussion in [36].…”

Section: Introductionmentioning

confidence: 99%

Field Assisted Sintering Technology, Part II: Simulation

Rothe

Hartmann

2017

GAMM-Mitteilungen

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Field-assisted sintering technology (FAST) implies a multifield problem between electrical, thermal and mechanical fields. Based on a constitutive model proposed in [1], the numerical treatment of the three-field problem in a monolithic finite element framework is discussed. Apart from algorithmic considerations, numerical simulations are performed treating the complex contact problem, large deformations and the multifield issues themselves. This is combined with a PID-controller, which is required when the temperature process is given at specific positions in the graphite tool system and the electrical current is uncertain. The numerical simulations are validated by real experiments.

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Finite Element Simulation and Low‐Temperature Spark Plasma Sintering for Ti–Zr–Ni Alloy

Luo

Liu

et al. 2022

Adv Eng Mater

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A multi-field coupled FEM model for one-step-forming process of spark plasma sintering considering local densification of powder material

Cited by 51 publications

References 19 publications

Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB₂Composites

Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB₂Composites

Field Assisted Sintering Technology, Part II: Simulation

Finite Element Simulation and Low‐Temperature Spark Plasma Sintering for Ti–Zr–Ni Alloy

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A multi-field coupled FEM model for one-step-forming process of spark plasma sintering considering local densification of powder material

Cited by 51 publications

References 19 publications

Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB2Composites

Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB2Composites

Field Assisted Sintering Technology, Part II: Simulation

Finite Element Simulation and Low‐Temperature Spark Plasma Sintering for Ti–Zr–Ni Alloy

Contact Info

Product

Resources

About

Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB₂Composites

Effects of SPS Mold on the Properties of Sintered and Simulated SiC-ZrB₂Composites