Friction Stir Processing Strategies for Uniform Distribution of Reinforcement in a Surface Composite

Sharma, Vipin; Gupta, Yashpal; Kumar, B. Venkata Manoj; Prakash, U.

doi:10.1080/10426914.2015.1103869

Cited by 81 publications

(31 citation statements)

References 34 publications

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“…As can be seen from the region marked by a white circle on the micrograph, the powder rich sector is stretched till the processed zone. It can be noted that it is easier to spread the powder rich zone which was processed earlier [42]. Since the powder is discrete and loose as opposed to the base material, it is difficult to move.…”

Section: Distribution Of Mgco 3 After Fspmentioning

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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Section: Distribution Of Mgco 3 After Fspmentioning

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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“…The agglomeration or accumulation occurs as a result of inadequate material flow in processed region. The main reason for the inadequate flow, which results in agglomeration, is the insufficient heat input due to undesirable FSP parameter combinations and resistance offered by reinforcement [19,21,22]. In this research work the processing was performed in position control mode and the plunge for kept constant.…”

Section: Macro-and Micro-structurementioning

confidence: 99%

“…Achieving uniform particles distribution has been a very critical issue in SC fabrication through FSP. Sustained efforts have been directed towards achieving uniform particles distribution to strengthen the material by utilizing various strategies [9,[17][18][19]22]. In most of the available literature, it is improved by applying multiple FSP passes along the same direction of processing or reversing the direction of AS and RS [9,[17][18][19].…”

Section: Macro-and Micro-structurementioning

confidence: 99%

Another Approach to Characterize Particle Distribution during Surface Composite Fabrication Using Friction Stir Processing

Gangil

Maheshwari

Nasr

et al. 2018

Metals

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Surface composite fabrication through Friction Stir Processing (FSP) is evolving as a useful clean process to enhance surface properties of substrate. Better particle distribution is key to the success of surface composite fabrication which is achieved through multiple passes. Multiple passes significantly increase net energy input and undermine the essence of this clean process. This study proposes a novel approach and indices to relate the particle distribution with the FSP parameters. It also proposes methodology for predicting responses and relate the response with the input parameter. Unit stirring as derived parameter consisting of tool rotation speed in revolutions per minute (rpm), traverse speed and shoulder diameter was proposed. The particle distribution was identified to be achieved in three stages and all three stages bear close relationship with unit stirring. Three discrete stages of particle distribution were identified: degree of spreading, mixing and dispersion. Surface composite on an aerospace grade aluminum alloy AA7050 was fabricated successfully using TiB2 as reinforcement particles. FSP was performed with varied shoulder diameter, rotational speed and traversing speed and constant tool tilt and plunge depth using single pass processing technique to understand the stages of distribution. Significant relationships between processing parameters and stages of particle distribution were identified and discussed.

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“…These properties are good mechanical and physical properties for ASC, which are formed by the reinforcement of hard ceramic particles in an aluminum matrix layer. Both the mechanical and physical properties of ASC are very important for their continued usability [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

“…Then, the FSP tool initiates a forward movement in the processing direction. The FSP tool's role is stirring the plastic deformation by the pin and shoulder, by which the soft material and movement direction of particles changes from the front to back within the shoulder and turnaround of the pin [1,11]. The stirring of the internal material between the plastic deformation and reinforced particles causes mixing and grain refinement in the structure.…”

Section: Introductionmentioning

confidence: 99%

Multi-Performance Characteristics of AA5052 + 10% SiC Surface Composite by Friction Stir Processing

2020

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In this paper, optimization of the fabrication parameters of an aluminum surface composite with respect to tensile strength and tool wear rate is reported. The surface layer was reinforced with SiC particles to improve the tribological properties of AA-5052. The Taguchi design with orthogonal array L8 was used for the experimental design, which included three processing parameters: the number of passes, rotational speed, and traversal speed. The experiment used optimal fabrication parameter searching to produce a multi-response prediction of both the tensile strength and tool wear rate. The experimental result was determined by grey relational analysis for multi-performance characteristics. Afterward, the prediction result of the optimal fabrication parameters was confirmed by repeated experiments to confirm the selection of optimal process parameters. The results revealed that the optimal fabrication parameters for multi-performance characteristics are two passes, rotational speed of 1000 revolutions per minute (RPM), and traversal speed of 30 mm/min (condition N2R1T2). These showed high tensile strength (229.90 MPa), low tool wear rate (0.0851), and a uniform distribution of SiC particles in the matrix. In addition, grey relational analysis showed that the parameter priority was 51.68% for rotational speed (the most significant process parameter), 36.18% for transversal speed, and 7.05% for the number of passes. Therefore, the grey-based orthogonal array Taguchi method can optimize multi-performance characteristics through the setting of process parameters for friction stir processing of an aluminum surface composite.

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Friction Stir Processing Strategies for Uniform Distribution of Reinforcement in a Surface Composite

Cited by 81 publications

References 34 publications

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

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

Another Approach to Characterize Particle Distribution during Surface Composite Fabrication Using Friction Stir Processing

Multi-Performance Characteristics of AA5052 + 10% SiC Surface Composite by Friction Stir Processing

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Friction Stir Processing Strategies for Uniform Distribution of Reinforcement in a Surface Composite

Cited by 81 publications

References 34 publications

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

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

Another Approach to Characterize Particle Distribution during Surface Composite Fabrication Using Friction Stir Processing

Multi-Performance Characteristics of AA5052 + 10% SiC Surface Composite by Friction Stir Processing

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Product

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

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