Micro Powder Injection Moulding of 316l Stainless Steel Feedstock and Numerical Simulation of the Sintering Stage

Kong, Xiangxing; Quinard, Cédric; Barrière, Thierry; Gelin, Jean‐Claude

doi:10.1063/1.3457598

Cited by 12 publications

(5 citation statements)

References 6 publications

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“…After incorporating these approaches into the SPH model a correct prediction of powder distribution in MicroMIM parts was achieved as proven by computer tomography (CT) measurements using synchrotron radiation (Kauzlaric et al, 2008;Greiner et al, 2011). A similar objective, the creating of a PIM-specific simulation routine, is being pursued at the University of Besancon through the study of novel approaches, which are described in detail in Barriere et al (2003;2009) and Kong et al (2010).…”

Section: Simulation Of Micromimmentioning

confidence: 99%

Micro metal injection molding (MicroMIM)

Piotter

2012

Handbook of Metal Injection Molding

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Section: Simulation Of Micromimmentioning

confidence: 99%

Micro metal injection molding (MicroMIM)

Piotter

2012

Handbook of Metal Injection Molding

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“…When the temperature exceeds a certain transition temperature, viscoplastic strain instead of elastic strain dominates the sintering process, and the specimen begins to densify. Viscoplastic strain refers to the creep of materials at high temperature due to grain boundary diffusion and lattice diffusion [17]. According to the linear viscoplastic theory, the viscoplastic strain rate can be expressed as [34]:…”

Section: Thermo-elasto-viscoplastic Constitutive Lawmentioning

confidence: 99%

“…where η p and υ p are the uniaxial viscosity and viscous Poisson's ratio of the material, respectively [17].…”

Section: Thermo-elasto-viscoplastic Constitutive Lawmentioning

confidence: 99%

“…Sintering is one of the key processes for MIM that determines the accuracy and performance of the materials. It is a thermal process below the melting point of the main constituent, which could facilitate particle bonding through solid-state diffusion that increases structural strength and density and reduces system energy [17][18][19][20]. The sintering phenomenon involves particle fusion, volume reduction, porosity reduction, and grain growth.…”

Section: Introductionmentioning

confidence: 99%

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Integrated Numerical Simulations and Experimental Measurements for the Sintering Process of Injection-Molded Ti-6Al-4V Alloy

Hong

Huang

et al. 2022

Materials

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Metal injection molding (MIM) is an advanced manufacturing technology that enables the mass production of high-performance and complex materials, such as the Ti-6Al-4V alloy. The determination of the size change and deformation of the Ti-6Al-4V alloy after the sintering process is challenging and critical for quality control. The numerical simulation could be a fast and cost-effective way to predict size change and deformation, given the large degrees of freedom for the sintering process. Herein, a finite element method based on the thermal-elastic-viscoplastic macroscopic model is developed to predict the shrinkage, deformation, relative density, and crack of injection-molded Ti-6Al-4V after sintering, using the Simufact software. Excellent agreements between experimental measurements and numerical simulations of the size and deformation are demonstrated (within a 3% error), confirming the accuracy of the numerical model. This approach can serve as a guideline for the mold design and sintering optimization of the MIM process.

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“…The filling time was the major contributor to the maximum shear rate irrespective of plate thickness [42,43]. The sintering stage in μPIM has also been simulated with Abaqus R to estimate shrinkage in 316L specimens [136].…”

Section: Numerical Simulationmentioning

confidence: 99%

A review of micro-powder injection moulding as a microfabrication technique

Attia

Alcock

2011

J. Micromech. Microeng.

113

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Micro-powder injection moulding (μPIM) is a fast-developing micro-manufacturing technique for the production of metal and ceramic components. Shape complexity, dimensional accuracy, replication fidelity, material variety combined with high-volume capabilities are some of the key advantages of the technology. This paper assesses the capabilities and limitations of μPIM as a micromanufacturing technique by reviewing the latest developments in the area and by considering potential improvements. The basic elements of the process chain, variant processes and simulation attempts are discussed and evaluated. Challenges and research gaps are highlighted, and potential areas for improvement are presented.

show abstract

Micro Powder Injection Moulding of 316l Stainless Steel Feedstock and Numerical Simulation of the Sintering Stage

Cited by 12 publications

References 6 publications

Micro metal injection molding (MicroMIM)

Micro metal injection molding (MicroMIM)

Integrated Numerical Simulations and Experimental Measurements for the Sintering Process of Injection-Molded Ti-6Al-4V Alloy

A review of micro-powder injection moulding as a microfabrication technique

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