Effect of Incubation Coupled with Artificial Aging in T6 Heat Treatment of A356.2 Aluminum Casting Alloy

Jeyakumar, Manickaraj; Liu, G.; Shankar, Sumanth

doi:10.1007/bf03355520

Cited by 8 publications

(2 citation statements)

References 23 publications

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“…An exothermic peak around 400 K is known as the Guinier-Preston zone (GP zone). In this zone, a fine-scale metallurgical phenomenon of Mg-Si nanocluster formation occurs [31]. The exothermic peaks between 500 and 600 K were generated by the formation of β" and β phases [32].…”

Section: Analysis Of Imcsmentioning

confidence: 99%

Effects of Heat Treatment on the Microstructure and Hardness of A356 (AlSi7Mg0.3) Manufactured by Vertical Centrifugal Casting

Kim

Jang²,

et al. 2021

Applied Sciences

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The A356 alloy has been widely used in automotive components, such as wheels and brake disks, because it is an excellent lightweight material with high corrosion resistance and good mechanical properties. Recently, to reduce the weight of brake disks, the Fe-A356 hybrid brake disk has been suggested. Because brake disk quality is directly related to driving safety, the T4/T6 heat treatment of centrifugally cast A356 alloys were performed to enhance the mechanical properties and reduce micro-segregation. The solid-solution heat treatment followed by annealing caused the formation of Mg-rich intermetallic compounds on the grain boundaries of the Al matrix, decreasing the average hardness of the alloys by 13 HV. In contrast, the solid solution followed by water quenching (T4) reduced the area fractions of the intermetallic compounds and increased the average hardness by 11 HV. The T6 heat-treated A356 alloys, which were influenced by the formation of the Guinier–Preston zone exhibited a relatively higher average hardness, by 18 HV, compared to T4 heat-treated A356 alloys.

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Section: Analysis Of Imcsmentioning

confidence: 99%

Effects of Heat Treatment on the Microstructure and Hardness of A356 (AlSi7Mg0.3) Manufactured by Vertical Centrifugal Casting

Kim

Jang²,

et al. 2021

Applied Sciences

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“…The A356 cast aluminum alloy (Al: 7 at.% Si: 0.3 at.% Mg) depends on the high Si content to control the shape of the eutectic, precipitate, and other intermetallic compounds [1,9,10]. In general, aging treatments produce coherent metastable Guinier-Preston (GP) zones [11][12][13][14][15], followed by transformation into metastable semi-coherent precipitates [16].…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolutions and Strengthening Mechanism according to the Aging Temperatures of a High Si Cast Aluminum Alloy

Shin¹,

Kim²

2023

Korean J. Met. Mater.

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A356 cast aluminum alloy contains 7 at.% Si and 0.3 at.% Mg, producing an approximately 50% eutectic microstructure. This high Si content and various casting conditions play a significant role in strengthening A356 alloy, by controlling the eutectic morphology and precipitates of other intermetallic compounds. Understanding how Si-related precipitates and clusters are soluble in the α-matrix is necessary to provide high strength and fatigue resistance to A356 alloys. The aging heat-treatment temperature in the A356 alloy most likely promotes the formation of these precipitates and clusters. The A356 samples were differently aged at temperatures of 110 oC and 130 oC for 2 h, and were labeled 110A, and 130A, respectively. 110A was found to have improved mechanical properties, such as high strength and elongation, compared to 130A, which may be attributed to the formation of secondary phases in the α-phase matrix. Scanning and transmission electron microscopy and atom probe tomography analyses demonstrated Ti2Si precipitation and various-sized cluster formations in 110A. In contrast, 130A had fewer clusters than 110A. Therefore, different aging heat-treatment temperatures relate to a change in the behavior of atoms, affecting the mechanical properties.

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Cooling Behavior of A356 Alloy in Surfactant Quenching Medium

Güneren¹,

Dokumacı

2019

Inter Metalcast

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Effect of Incubation Coupled with Artificial Aging in T6 Heat Treatment of A356.2 Aluminum Casting Alloy

Cited by 8 publications

References 23 publications

Effects of Heat Treatment on the Microstructure and Hardness of A356 (AlSi7Mg0.3) Manufactured by Vertical Centrifugal Casting

Effects of Heat Treatment on the Microstructure and Hardness of A356 (AlSi7Mg0.3) Manufactured by Vertical Centrifugal Casting

Microstructural Evolutions and Strengthening Mechanism according to the Aging Temperatures of a High Si Cast Aluminum Alloy

Cooling Behavior of A356 Alloy in Surfactant Quenching Medium

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