Influence of Friction Stir Processing Parameters on the Microstructure of Aluminum Foams

Azizieh, M.; Goudarzi, Keyvan; Pourmansouri, R.; Kafashan, Hosein; Balak, Zohre; Kim, Hyoung Seop

doi:10.1007/s12666-017-1179-6

Cited by 10 publications

(5 citation statements)

References 29 publications

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“…Al-Si-Cu Al alloyADC12 diecasting plates of 3 mm thickness Al foam is successfully developed with friction heat foaming process. Uniform pores size is obtain at 700 k after 74 s Mahdi Azizieh et al 24 Groove technique 1100 Al withthe thickness of 10 mm At higher tool passes the uniform pore size is observed. The best porosity is obtain at 923 k temperature of holding is 12 min Yoshihiko Hangai et al 25…”

Section: Sandwich Precursor Techniquementioning

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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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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Section: Sandwich Precursor Techniquementioning

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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“…In addition to the weight reduction, metal foams offer shock absorption capacity during impacts and dampening in vibrating structures and acoustics [7][8][9][10]. The metal foam also provides good sound absorption capacity, thereby providing comfort [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Rathore et al [19] employed underwater FSP to develop AA2219-Y 2 O 3 foam with TiH 2 as a foaming agent to investigate the effect of multi-pass FSP and demonstrated that change of side between FSP passes enhanced the homogeneity of the porous structure. Azizieh et al [11] performed FSP on AA1100 plates with TiH 2 as a blowing agent and Al 2 O 3 as a stabilizing agent to investigate the simultaneous effect of tool rotation speed, foaming time, and temperature as well as the number of FSP passes. The authors found that with increasing FSP passes, the pore density increased, and pore size became uniform.…”

Section: Introductionmentioning

confidence: 99%

Development of Aluminium Metal Foams via Friction Stir Processing by Utilizing MgCO3 Precursor

et al. 2023

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Aluminium foams possess multi-functional properties and a low specific weight, making them one of the most suitable choices in the application domain of the automobile and aviation sectors, vibrating machining, and structural parts. Compared to traditional fabrication routes, friction stir processing (FSP) is gaining acceptance as it is a cost-effective, highly efficient, and innocuous process to fabricate the foam precursors from the bulk substrate. In the current study, FSP was utilized to develop a precursor with MgCO3 powder acting as the blowing agent. The FSP experiments were performed as per Taguchi’s L8 orthogonal array. The precursor was heat treated in an electric furnace at a holding temperature of 650 °C for 10 min. After the post-heat treatments, this precursor resulted in a porous structure due to the evolution of CO2 gas from the composite. The simultaneous effect of tool rotation speed, traverse speed, and shoulder diameter was investigated on the pore size and porosity of the foam produced. The composite parameter “unit stirring” is found to be closely related to the processed zone (PZ) and volume processing rate of the processed zone, pore size, and the degree of porosity. The highest porosity of 16.67% was obtained with an average pore size of 10.5 µm. The largest pore size, 17.8 µm, was observed to be associated with a porosity of 14.40%. The analysis of the Kiviat plot revealed that the values of the PZ area and volume processing rate possess a polar symmetry with unit stirring. The pore size and pore density were both found to be symmetrically distributed about the unit stirring.

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“…Azizeh et al have used a slot based strategy followed by FSP to incorporate the foaming and stabilizing agent in Al alloy plates [22]. Here, the use of nano-sized alumina enabled a reduction in the amount of stabilizing agent.…”

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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Influence of Friction Stir Processing Parameters on the Microstructure of Aluminum Foams

Cited by 10 publications

References 29 publications

Aluminum foam development by filling architecture techniques and process optimization

Aluminum foam development by filling architecture techniques and process optimization

Development of Aluminium Metal Foams via Friction Stir Processing by Utilizing MgCO3 Precursor

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

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Influence of Friction Stir Processing Parameters on the Microstructure of Aluminum Foams

Cited by 10 publications

References 29 publications

Aluminum foam development by filling architecture techniques and process optimization

Aluminum foam development by filling architecture techniques and process optimization

Development of Aluminium Metal Foams via Friction Stir Processing by Utilizing MgCO3 Precursor

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

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Product

Resources

About

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