Foaming Behavior of Aluminum Foam Precursor Using Only Friction Heat of Rotating Tool

Hangai, Yoshihiko; Morita, Tomoaki; Utsunomiya, Takao

doi:10.2320/matertrans.m2016034

Cited by 9 publications

(5 citation statements)

References 16 publications

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“…b. Open groove technique: In this technique, the Vshape grooves are made on the AA7075 plate and then filled with a mixture of blowing and stabilizing agents, as shown in Figure 2 23…”

Section: Processing Techniquesmentioning

confidence: 99%

“…Although,FSP process can be successfully utilized for development of aluminum foam but, it has been stated by Hangai et al that the temperature generated (450°C-550°C) during the processing of aluminum plates by friction stir processing is around the temperature for decomposing the foaming agent (TiH 2 ). 18,23 Therefore, some amount of decomposed gases (H 2 ) released during frictional stirring in the processed region which reduces the usefulness of foamable mixture. 30 Consequently, it is important to establish a procedure where the foamable mixture does not flow away from the processing region.…”

Section: Introductionmentioning

confidence: 99%

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Aluminum foam development by filling architecture techniques and process optimization

Kumar

Singh

Jain

2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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The aluminum foam is used in various industrial applications because of its superior strength to weight ratio. The FSP is used here for development of a precursor by processing a foamable mixture into the substrate. The filling of the foamable mixture is done by different techniques named: Buried hole, sandwich, and groove architecture. The developed precursor is then microwave heated for the development of foam. A comparison is made between the different filling techniques, number of passes and composition of the foamable mixture on the distribution of pores, size, porosity, and compressive behavior of the foam. It has been observed that the buried hole is more suitable for foam development owing to less wastage of foaming agent. The decomposed gases were fully utilized by trapping into the substrate. It is also observed that increasing the number of passes and weight % of TiH2, improves the distribution of pores. The buried hole technique shows the linear plateau stress in the compressive test as compared to other techniques. The highest porosity is close to 80% during buried hole technique, and the average pore diameter ranges between 0.4 and 1.69 mm for optimized samples.

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“…b. Open groove technique: In this technique, the Vshape grooves are made on the AA7075 plate and then filled with a mixture of blowing and stabilizing agents, as shown in Figure 2 23…”

Section: Processing Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Aluminum foam development by filling architecture techniques and process optimization

Kumar

Singh

Jain

2023

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…After processing, samples are extracted from processed region and heat treated at a temperature 650°C that is, above the decomposition temperature of TiH 2 to develop foam. 29,30 Samples are kept in furnace when temperature is maintained at this specified temperature for 5-10 min so that it becomes homogenously heated and aluminum reaches into plastic or semi-liquid state. The heating at this temperature causes formation of H 2 gas by decomposition of TiH 2 particles.…”

Section: Development Of Foammentioning

confidence: 99%

“…The obtained graphs by quasi-compression test of the developed foams in this research are consistent with the published literature. 30 Quasi-static tests were performed for all foam samples to obtain the compressive strength of the foams. Most of the foam samples show the universal deformation behavior in which first region shows small compression behavior with an increase in stress.…”

Section: Quasi-static Compression Testmentioning

confidence: 99%

Effect of Process Parameters on Mechanical Properties of Aluminum Composite Foam Developed by Friction Stir Processing

Rathore¹,

Singh

Khan³

2021

Proceedings of the Institution of Mechanical Engineers, Part B:

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The underwater friction stir processing is used for development of aluminum metal matrix composite (AA2219-Y2O3) foam. For development of foam, holes with different diameter in the mid thickness of plate were filled with a mixture of TiH2 and aluminum powder and underwater friction stir processing was used to mix this mixture in aluminum metal matrix composite. Then precursors extracted from the processed zone and heated upto 650°C in a furnace for development of foam. The effect of diameter of hole, number of passes and the tool rotation direction has been studied on the foam cell size and static and dynamic compressive behavior of the foam. It is found that as the diameter of hole increases, the size of pores increases. The distribution of pores is better with higher number of passes and increasing the hole diameter. The quality of foam further improves by reversing the tool rotation direction. The developed foam has different pore size varies from 0.7 to 2.7 mm depends on the FSP parameters. Based on the size of pores and their distribution the relative density ranges from 0.1 to 0.78. The foam produced with 4 mm hole diameter has best static and dynamic compression properties.

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“…Investigation of Al foam/Al tube [19], Al foam/steel [20] tube has demonstrated a strong bond of the precursor to the interior of the tube. Although, foaming of precursors as a result of frictional heating has been proved to be a viable option [21], the extraction of the foam, however, can be a problem.…”

Section: Introductionmentioning

confidence: 99%

Foaming of friction stir processed Al/MgCO₃ precursor via flame heating

Shandley

Maheshwari

Siddiquee

et al. 2020

Mater. Res. Express

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In the recent years, metal foams have become promising candidate materials in the engineering sector owing to their light weight and excellent energy absorption properties. Friction stir processing (FSP) has emerged as a cost-effective route to fabricate metal foam precursors from bulk substrates. Although the short processing time in FSP is able to provide high productivity, the cost of the foaming agent, TiH 2 in the case of aluminum foams is still high. This paper introduces flame heating to achieve localized foaming of aluminum alloy AA5754 to explore the possibility of using magnesium carbonate as a foaming agent stirred using multi-pass FSP. A specially designed slot based strategy using two plates arranged in lap configuration is devised to stir the foaming agent and understand the material movement after each subsequent pass. Microscopy techniques were carried out to evaluate the distribution of the foaming agent after each pass and the resulting microstructure of the processed plates as well as the morphology of the foamed sample. EDX results showed higher Mg and O content around the pore walls.

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Foaming Behavior of Aluminum Foam Precursor Using Only Friction Heat of Rotating Tool

Cited by 9 publications

References 16 publications

Aluminum foam development by filling architecture techniques and process optimization

Aluminum foam development by filling architecture techniques and process optimization

Effect of Process Parameters on Mechanical Properties of Aluminum Composite Foam Developed by Friction Stir Processing

Foaming of friction stir processed Al/MgCO₃ precursor via flame heating

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Foaming Behavior of Aluminum Foam Precursor Using Only Friction Heat of Rotating Tool

Cited by 9 publications

References 16 publications

Aluminum foam development by filling architecture techniques and process optimization

Aluminum foam development by filling architecture techniques and process optimization

Effect of Process Parameters on Mechanical Properties of Aluminum Composite Foam Developed by Friction Stir Processing

Foaming of friction stir processed Al/MgCO3 precursor via flame heating

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Product

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Foaming of friction stir processed Al/MgCO₃ precursor via flame heating