The Effect of Heat Treatment on the Properties of Friction Stir Processed AA7075‐O with and without Nano Alumina Additions

Refat, M.; Abdelmotagaly, A. M. M.; Ahmed, Mohamed M. Z.; El-Mahallawi,

doi:10.1002/9781119093343.ch13

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…The aging time post-heating also has significant effect on the amount of precipitation and consequently influences the magnitude and distribution of microhardness. In an Al 2 O 3 reinforced Al7075 matrix composite, after SHT at 515 °C, 24 h aging at 120 °C exhibited better microhardness distribution compared to aging for 12 h and 36 h [135].…”

Section: Microhardnessmentioning

confidence: 95%

“…Heat treatment with suitable parameter helps in re-precipitation or formation of fine precipitates by dissolving the coarse precipitates [64,104,133]. As a result, in spite of grain coarsening, higher microhardness with better distribution is observed in heattreated composites [104,[134][135][136]. The temperature of heating controls the degree of precipitation.…”

Section: Microhardnessmentioning

confidence: 99%

See 1 more Smart Citation

Microstructural, mechanical and wear characteristics of aluminum matrix composites fabricated by friction stir processing

Maji

Ghosh

Nath

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Aluminum matrix composites are widely used in aerospace, automotive industry and defense sector owing to its excellent weight-to-strength ratio. Friction stir processing has emerged as an excellent technique to produce particle reinforced as well as fiber reinforced aluminum matrix composites. This article is a state of the art of aluminum matrix composite fabrication by friction stir processing route. The fabrication procedure has been discussed with carefully mentioning the parameters associated with the process. Microstructures and consequent mechanical properties of the composites have been evaluated. Particular attention is given on the microstructural modification and strengthening mechanism. Also the wear and corrosion behavior of the composites has been discussed thoroughly. Finally, the article has been concluded with some suggestions toward future work.

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Section: Microhardnessmentioning

confidence: 95%

Section: Microhardnessmentioning

confidence: 99%

Microstructural, mechanical and wear characteristics of aluminum matrix composites fabricated by friction stir processing

Maji

Ghosh

Nath

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

Investigating the Thermo-Mechanical Properties of Aluminum/Graphene Nano-Platelets Composites Developed by Friction Stir Processing

Gamil

Ahmed

2020

Int. J. Precis. Eng. Manuf.

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The Applicability of Die Cast A356 Alloy to Additive Friction Stir Deposition at Various Feeding Speeds

et al. 2021

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In the current investigation, additive friction stir-deposition (AFS-D) of as-cast hypoeutectic A356 Al alloy was conducted. The effect of feeding speeds of 3, 4, and 5 mm/min at a constant rotational speed of 1200 rpm on the macrostructure, microstructure, and hardness of the additive manufacturing parts (AMPs) was investigated. Various techniques (OM, SEM, and XRD) were used to evaluate grain microstructure, presence phases, and intermetallics for the as-cast material and the AMPs. The results showed that the friction stir deposition technique successfully produced sound additive manufactured parts at all the applied feeding speeds. The friction stir deposition process significantly improved the microstructure of the as-cast alloy by eliminating porosity and refining the dendritic α-Al grains, eutectic Si phase, and the primary Si plates in addition to intermetallic fragmentation. The mean values of the grain size of the produced AMPs at the feeding speeds of 3, 4, and 5 mm/min were 0.62 ± 0.1, 1.54 ± 0.2, and 2.40 ± 0.15 µm, respectively, compared to the grain size value of 30.85 ± 2 for the as-cast alloy. The AMPs exhibited higher hardness values than the as-cast A356 alloy. The as-cast A356 alloy showed highly scattered hardness values between 55 and 75.8 VHN. The AMP fabricated at a 3 mm/min feeding speed exhibited the maximum hardness values between 88 and 98.1 VHN.

show abstract

The Effect of Heat Treatment on the Properties of Friction Stir Processed AA7075‐O with and without Nano Alumina Additions

Cited by 3 publications

References 18 publications

Microstructural, mechanical and wear characteristics of aluminum matrix composites fabricated by friction stir processing

Microstructural, mechanical and wear characteristics of aluminum matrix composites fabricated by friction stir processing

Investigating the Thermo-Mechanical Properties of Aluminum/Graphene Nano-Platelets Composites Developed by Friction Stir Processing

The Applicability of Die Cast A356 Alloy to Additive Friction Stir Deposition at Various Feeding Speeds

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