Influence of tool pin geometry and moving paths of tool on channel formation mechanism in modified friction stir channeling technique

Rashidi, Arash; Mostafapour, Amir

doi:10.1007/s00170-015-7049-7

Cited by 19 publications

(16 citation statements)

References 20 publications

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“…The upward conical tool's probe profile is used with shoulder-workpiece clearance, wherein the conic angle is given toward the shoulder surface as shown in Figure 9c. [74,75] This conic angle provides upward swirling action to the plastically deformed material around the probe, which in turn extracts material toward the clearance between shoulder and workpiece to produce channel. In this case, nonthreaded tool's probe with conical profile is used for material extraction.…”

Section: Fswp Tools and Shoulder-workpiece Clearancementioning

confidence: 99%

“…It is claimed that the channel formation is better with parameters of conic tool's probe features and shoulder-workpiece clearance when compared with cylindrical nonthreaded profile of probe processed with tilt angle. [74,75] However, no quantitative comparison is presented. Also, the life of the tool and reliable tool design considerations are also not considered.…”

Section: Fswp Tools and Shoulder-workpiece Clearancementioning

confidence: 99%

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A review on friction stir-based channeling

Mehta

Vilaça

2021

Critical Reviews in Solid State and Materials Sciences

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Friction stir-based channeling is a solid-state processing encompassing the friction stir channeling (FSC) and its variants. In one manufacturing action, the FSC delivers a subsurface internal closed channel in a monolithic plate with no length limitation. The unique characteristics of theses internally closed channels produced with FSC can fit the demand from several industrial fields, namely lightweight structurally stiffened panels and applications where high power density requires highly efficient thermal management systems, such as power electronics and electric vehicles-based transportation. This first review on the FSC and its variants encompasses a systematic and comprehensive understanding on physical properties, including thermal performance and channel manufacturability applied to different engineering materials. The discussion is emphasized on working principle of channel formation, tool design, influence of process parameters, geometrical characterization, mechanical properties, hardness field and microstructural features correlated with mechanical properties. It can be summarized that novel processing of channels by FSC enhances the thermal performance compared to conventional fabrication techniques. FSC can produce complex path channels with various sizes, shapes and surface finishing. Precise control on process parameters and material flow governs the channel formation that subsequently influences thermal and mechanical performances of the channels. FSC has been applied to different range of thermal management systems and has potential for many demanding existent applications and enabling new high-performance products. From the initial FSC concept based on a shoulder-workpiece clearance, to the most recent solutions, such as the stationary shoulder FSC, and the no-tilt-angle and no-shoulder-workpiece clearance, allowing the manufacturing of large size channels, leaving the processed surface at its original quota and ready to be used. A significant leap is introduced with the Hybrid FSC enabling simultaneous welding and channeling, of similar and dissimilar metal components, and therefore, enhancing design opportunities for even more competitive solutions.

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Section: Fswp Tools and Shoulder-workpiece Clearancementioning

confidence: 99%

Section: Fswp Tools and Shoulder-workpiece Clearancementioning

confidence: 99%

A review on friction stir-based channeling

Mehta

Vilaça

2021

Critical Reviews in Solid State and Materials Sciences

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“…The height of pin‐fin plays an important role in both pressure difference and heat removal. There are a lot of researches of pin height influence in natural convective heatsink [18, 19]; however, little attention was paid in the microchannel fluid heatsink. Abdoli et al [20] contrast the heat removal capacity with the change of pin height from 200 to 400 µm.…”

Section: Model Design and Optimisationmentioning

confidence: 99%

Heat removal capacity enhanced micropin array heatsink with optimised pin height and inlet–outlet positions

Yang

Ding

Wang

et al. 2016

Micro & Nano Letters

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A micropin array heatsink with high heat removal capacity for its optimised pin height and inlet-outlet positions is presented. Computational fluid dynamics simulation indicates pin height has a big impact on the pressure difference and heat removal capacity. A decrease of 2.67°C of the maximum temperature was achieved when pin height increased from 200 to 500 µm. Meanwhile with the proper pin height, the different positions of inlet and outlet that the maximum temperature decreases 13.89°C, the best design compared with the worst design among 63 samples under the same working condition. The two typical samples were fabricated and tested through micromachining technology and an infrared imaging testing system. Experiment result preferably matches with the simulation result of the same variation trend of 5.8°C. The positions of inlet and outlet were proved to play an important role in enhancing the heat removal capacity of the micropin array heatsink.

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“…It has been investigated by FSW for the tool force, torque and welding temperature of AA 5083-H321 for 6 mm thickness has been noted [3]. On the AA5083 monolithic plate, a technique of modified friction stir channeling has been applied in making the channel [4]. and the FSC, it is obtained that the comparison of the fabrication channel produced using MFSC shows better results than the FSC process [5].…”

Section: Introductionmentioning

confidence: 99%

Effect of FSW Heating Base Temperature on Tensile Strength and Hardness of AA 1100 Welds

Hadi

Setiawan²,

Nugroho³

et al. 2020

Intek

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The research objective was to determine the effect of heating base temperature on tensile strength and hardness of AA 1100 welds in Friction Stir Welding (FSW). The research methodology includes preparing work pieces of size 150 mm x 100 mm x 3.6 mm from aluminium alloy AA1100 series, making work piece clamps that are suitable for the milling machine used, preparing heating plates 500 Watt for FSW, preparing tools from AISI-H13 material with a shoulder diameter of 20 mm and pin size of M5 x 3.4 mm for FSW, the implementation of FSW with a rotating speed of 1750 rpm and translation speed of 10 mm/minute, preparing hardness test specimens, preparing tensile test specimens refers to ASTM E8-13a, and data analysis of hardness test and tensile test results. The FSW results show that the hardness value increases with the increase in the width of the heating plate linearly for a temperature of 200oC from 10 mm to 30 mm which indicates better conditions, meanwhile decreases at a temperature of 175oC for heating plate width from 10 mm to 20 mm, but increases to 30 mm which is different for the temperature of 250oC and temperature of 300oC which have increased from 10 mm to 20 mm, but decreases towards 30 mm, and than the correlation between AA 1100 tensile strength and surface hardness of 3 heating plate widths is shown with the function of tensile strength, s (MPa) = -0.9699 x surface hardness (HV) + 102.01.

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Influence of tool pin geometry and moving paths of tool on channel formation mechanism in modified friction stir channeling technique

Cited by 19 publications

References 20 publications

A review on friction stir-based channeling

A review on friction stir-based channeling

Heat removal capacity enhanced micropin array heatsink with optimised pin height and inlet–outlet positions

Effect of FSW Heating Base Temperature on Tensile Strength and Hardness of AA 1100 Welds

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