Mechanical Behavior of Cryomilled Ni Superalloy by Spark Plasma Sintering

As of today, metals and alloys are widely utilized as structural, mechanical, electrical, and magnetic materials in every aspect of technology and industry. The complexity and diversity of metals applications emphasize the need for a new production method to quickly and easily manufacture metallic components. Spark plasma sintering as a new solidstate sintering method has been recently developed to respond to these needs. Up to now, numerous papers and researches have been published in the field of spark plasma sintering and its ability to manufacture metallic samples. Density is a significant property that has a great influence on the physical, mechanical, and functional properties of metallic parts. To the best of our knowledge, there is no concrete paper that reviews the densification behavior of metals and alloys during spark plasma sintering and the effect of its parameters on the density of metallic samples. As a result, this article dedicated to addressing this need. In this mini-review, after a short description of spark plasma sintering method, the effects of each sintering parameters on densification behavior of metals and alloys are studied, and possible physical and microstructural factors which have the effect of densification behavior of metallic samples at various sintering conditions are reviewed. Finally, the recent advances in finite element modeling, which study the temperature and stress inhomogeneity in the SPS process, have been reviewed in this paper.

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“…Such trend is shown for Tungsten [24], Inconel 625 (Ni-based super alloy) [25], and Al-2024 [26], as examplesshown in Figs. 2 and 3.…”

Section: Sps Temperaturesupporting

confidence: 60%

The densification behavior of metals and alloys during spark plasma sintering: A mini-review

Sovizi

Seraji

2019

Sci Sintering

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“…It is reported that pore formation during powder sintering reduced grain growth due to the pinning effect exerted by the pores. This also happened in the SPS method and has been reported in literature [41,42]. Sample C has the largest grain size and possesses the least density, and this is because the sintered alloy keeps the memory of the starting powder particle size.…”

Section: Microstructure Of the Sintered In738lc Alloyssupporting

confidence: 56%

Influence of Nickel Powder Particle Size on the Microstructure and Densification of Spark Plasma Sintered Nickel-Based Superalloy

Ogunbiyi

Jamiru

Sadiku

et al. 2021

JERA

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This study aims to investigate the effects of powder particle size on the densification and microhardness properties of spark plasma sintered superalloy. Three particles size ranges of nickel were used in this study, namely, (3-44, 45-106 and 106-150 μm), and this is the matrix in the IN738LC superalloy composition (powder), used in the study. The effects of the particle size were examined at a specific applied temperature and pressure. The transitioning stages during the sintering process of the green powders to the formation of the sintered alloy were analyzed and given as the particle rearrangement stage, the localized deformation stage and the neck formation/grain growth stage. There was the formation of γ, γ' and a solid solution within the microstructure of the sintered alloys. The effect of particle size was more pronounced on the grain sizes obtained, while the phases formed is the same for the three alloys. The results indicate that the nickel particle size (>60% of the total composition) has a significant influence on the densification, porosity, grain size and hardness properties of the IN738LC sintered alloy. Finer nickel particle size resulted in a sintered product with smaller grain size (9 µm), reduced percentage porosity (3.9%), increased relative density (96.1%) and increased hardness properties (371 Hv).

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“…It has several advantages over conventional sintering owing to its higher heating rates and shorter sintering time. [17][18][19] Experimental…”

Section: Introductionmentioning

confidence: 99%

Yttria Dispersion Strengthened Nickel-based Superalloy by Mechanical Alloying

Mohan

Subramanian

Angelo

2011

Transactions of the Indian Ceramic Society

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Mechanical Behavior of Cryomilled Ni Superalloy by Spark Plasma Sintering

Cited by 20 publications

References 28 publications

The densification behavior of metals and alloys during spark plasma sintering: A mini-review

The densification behavior of metals and alloys during spark plasma sintering: A mini-review

Influence of Nickel Powder Particle Size on the Microstructure and Densification of Spark Plasma Sintered Nickel-Based Superalloy

Yttria Dispersion Strengthened Nickel-based Superalloy by Mechanical Alloying

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