Influence of Powder Composition &amp; Morphology on Green Density for Powder Metallurgy Processes

K.R, Suresh; Mahendran, S.; Krupashankara, M.S.; Avinash, L

doi:10.15680/ijirset.2015.0401037

Cited by 8 publications

(7 citation statements)

References 6 publications

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“…Namun, serbuk baja dengan ukuran -31 µm lebih rentan terhadap pembentukan cacat selama tahap debinding dan sintering. [14]- [17] Kecacatan produk berkurang dengan meningkatkan laju pemanasan dan dengan meningkatkan gas laju aliran. Meskipun banyak penelitian telah dilakukan untuk mengevaluasi teknik paduan dan feedstock yang berbeda, namun sifat mekanik selain densitas produk sangat jarang diukur.…”

Section: Pendahuluanunclassified

Penggunaan Material 316l Untuk Green-Part Test Piece Dengan Teknik Metal Injection Molding

Fauzi

Wiranegara

2023

JRM

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Material 316L is one type of iron with excellence corrosion resistant and was used in many industries. 316L is used as feed stock material for Green-part test piece which is a product of the Metal Injection Molding (MIM) process. The study showed, the manufacture of green part made from standard 316L material has been carried out. Green part is a product made by injection mold stage from MIM process. The stages of research carried out refer to the Metal Injection Molding process with the standard references that included three stages carried out which are the preparation of feedstock, mold design, and mold testing with the injection process by testing material and by the 316L feedstock. The purpose of this study is to analyze the green part test piece that was made with 316L material in MIM process with a specific measurement and the quality of the end product using tensile test. Results of this study indicate that the right parameters was achieved to produce shapes that match the targeted geometry of the 316L feed stock material. The tensile strength test show reading of 110Mpa but when compared with other studies, the value was still under standard.

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Section: Pendahuluanunclassified

Penggunaan Material 316l Untuk Green-Part Test Piece Dengan Teknik Metal Injection Molding

Fauzi

Wiranegara

2023

JRM

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“…Other factors determining the sealing of green compacts are the shape and size of the starting particles [11], the degree of wear of the press tool matrix, the temperature of the pressing process, etc. [12].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the influence exerted by the static conditions of final squeezing on the compaction process of iron-based powder materials

Minitsky

Minitska

Okhrimenko

et al. 2021

EEJET

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This paper reports a study into the process of re-compaction of powder briquettes in the conditions of static pressing at a pressure of 800 MPa. The technological parameters of the pressing process have been analyzed, which make it possible to improve the compaction of powder briquettes based on iron. Such parameters are the outer greasing, which reduces friction between a green compact and the walls of the press tool matrix, and the firing, which removes the deformation strengthening of the green compacts and increases their plasticity. The green compacts’ sealing mechanism involved in the final squeezing process has been established, which is associated with the grinding of pre-compressed particles due to the strain in the contact areas. The increase in the stressed state of green compacts following the final squeezing was confirmed by the results of studying the residual micro-strains. The change in the stressed state of iron green compacts has been confirmed by the study into the structurally sensitive characteristics, which include the materials’ magnetic and electrical properties. Determining the magnetic characteristics has shown that final squeezing leads to an increase in coercive force, which can be explained by both the increase in the stressed state and the grinding of grains. Investigating the impact exerted by the annealing environment on the value of magnetic characteristics has demonstrated that annealing in hydrogen is more effective in terms of improving magnetic properties than annealing in a vacuum. This is due to the refining of grain boundaries through the processes of reduction of oxide films. The study of the mechanical characteristics of green compact materials based on iron powder has established that final squeezing leads to an increase in the hardness and strength of materials depending on the conditions of deformation. A significant improvement in the green compacts’ strength (820‒824 MPa) is due to both a decrease in porosity by 8‒10 % and an increase in the contact area as a result of plastic deformation after the annealing

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“…Suresh et al [17] have reported that the iron powders with an average particle size in the range of 2 to 150 microns show a linear relationship between green density and pressure. Daud et al [18] have reported that the grains and bulk density increase with increasing sintering temperature and sintering times.…”

Section: Powder Metallurgy Super Hexagonmentioning

confidence: 99%

Fabrication of a New Series of Quaternary Alloys through Hybrid Phase Sintering

Trasadiya¹,

Vora²

2020

J. Nano- Electron. Phys.

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In modern technology, revolution plays a significant role in improving technology day by day, qualitatively and quantitatively. A new series of Al-Si-In-Sn quaternary alloys was fabricated through powder metallurgy (PM) route. In PM, density and porosity of the final product are strongly dependent on the sintering process. In order to increase the density, we have proposed hybrid phase sintering (HPS), which belongs to liquid phase sintering category. HPS is a combination of solid phase sintering and liquid phase sintering, in which two or more elements take part in solid phase sintering and two or more elements take part in liquid phase sintering to achieve full relative density. Therefore, HPS is only applicable for quaternary or high entropy alloys. We achieved 97.67 % and 96.33 % relative densities in a new series of Al100-xSixIn6Sn10 (x  12, 16) quaternary alloys using HPS at 600 C in tubular furnace with an argon atmosphere. We also observed that one parameter of PM affects all other parameters of PM. Therefore, we have tried to express the effect of the parameter in the form of a PM super hexagon.

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Influence of Powder Composition & Morphology on Green Density for Powder Metallurgy Processes

Cited by 8 publications

References 6 publications

Penggunaan Material 316l Untuk Green-Part Test Piece Dengan Teknik Metal Injection Molding

Penggunaan Material 316l Untuk Green-Part Test Piece Dengan Teknik Metal Injection Molding

Determining the influence exerted by the static conditions of final squeezing on the compaction process of iron-based powder materials

Fabrication of a New Series of Quaternary Alloys through Hybrid Phase Sintering

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