Microstructures, mechanical properties and solidification mechanism of a hot tearing sensitive aluminum alloy asymmetric part fabricated by squeeze casting

Chang, Xusheng; Chen, Wenzhen; Sun, Wei Lian; Zhang, Hongming; Chu, Guannan; Zhang, Xin; Han, Fei; Zhang, Wencong; Du, Zhiming

doi:10.1016/j.jallcom.2021.161254

Cited by 26 publications

(3 citation statements)

References 34 publications

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“…In recent years, the research and practice of servo-hydraulic control systems for various types of presses have received significant attention [4] . Market research has revealed an urgent demand for energy saving in extrusion presses, with many manufacturers explicitly stating the need for presses to be equipped with energy-saving systems in response to the industry's green and sustainable development requirements [5][6] .…”

Section: Design Of Servo Electro-hydraulic Control System For Extrudermentioning

confidence: 99%

Development of servo electro-hydraulic control system for heavy-duty horizontal extruder

Guo,

Xue,

Xie

et al. 2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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Section: Design Of Servo Electro-hydraulic Control System For Extrudermentioning

confidence: 99%

Development of servo electro-hydraulic control system for heavy-duty horizontal extruder

Guo,

Xue,

Xie

et al. 2024

Fourth International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2024)

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“…In the squeeze casting process, application of squeeze and holding pressure results in a stronger interfacial bond between the matrix and reinforcement. Most importantly, the squeeze pressure facilitates a rapid solidification cooling rate which results in a refined and homogeneous grain structure, and consequently improves the mechanical properties [80][81][82][83][84][85][86] . As illustrated in Fig.…”

Section: Effects Of Processing Parameters On Microstructurementioning

confidence: 99%

Squeeze casting for metal alloys and composites: An overview of influence of process parameters on mechanical properties and microstructure

2022

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Over the years, squeeze casting technology has progressed from small to large-scale commercial applications. It has been employed in the production of varieties of products ranging from household items to high integrity structural components. This process is suitable for small components weighing up to 30 kg. Currently, parts such as brake calipers, suspension arms, pistons, connecting rods, and automotive wheels, etc., can be produced by squeeze casting [1][2][3] . The squeeze casting has been successfully used to fabricate metallic alloys, bimetals and metal matrix composites (MMC) [4][5][6][7][8][9] . Squeeze casting process involves the solidification of molten metal in a preheated die under squeeze pressure. Substantial material saving, the ability to deal with a wide range of materials, and near-net-shape fabrication are the significant benefits of squeeze casting process [2,[10][11][12] .

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“…The most common manufacturing methods of these aluminum alloy parts are casting and forging, followed by machining. However, such methods not only have high production costs but also cause material waste and other problems [ 4 ]. In order to overcome the above problems, the near-net forming method of aluminum alloy parts has received more attention.…”

Section: Introductionmentioning

confidence: 99%

Effect of Local Pressurization on Microstructure and Mechanical Properties of Aluminum Alloy Flywheel Housing with Complex Shape

Chen,

Ge,

Jiang

et al. 2023

Materials

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In this work, squeeze casting experiments of flywheel housing components with a large wall thickness difference and a complex shape were carried out with AlSi9Mg aluminum alloy. The defects, microstructures, and mechanical properties under different process parameters were investigated. Furthermore, the local pressurization process was applied to the thick-walled positions to force-feed the cast defects. The mechanical properties and microstructures at these positions were analyzed. The results showed that the surface quality of formed components was good and that local pressurization could effectively reduce the shrinkage cavity and shrinkage porosity in thick walls, but the scope and effect of forced feeding were limited. The optimum process parameters were a pouring temperature of 650 °C, a specific pressure of 48 MPa, a mold temperature of 220 °C, a local pressurization of 800 MPa, and pressure delay times of 15 s (side A) and 17 s (side B). The ultimate tensile strength, yield strength, and elongation of the formed component under validation experiments of the optimum process parameters were 201 MPa, 103 MPa, and 5.1%. Meanwhile, the fine grains of primary α-Al were mainly rosette and equiaxed grains, and the average grain size was about 40 μm. The microstructure of the eutectic silicon was acicular and was prone to segregation under pressure. According to profile morphology, the positions after pressurization were divided into a deformation zone, a direct action zone, and an indirect action zone. The coexistence of as-cast and plastic deformation microstructures was observed. The effect of local pressurization mainly involved a change in the solidification process, plastic deformation, and forced feeding.

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Microstructures, mechanical properties and solidification mechanism of a hot tearing sensitive aluminum alloy asymmetric part fabricated by squeeze casting

Cited by 26 publications

References 34 publications

Development of servo electro-hydraulic control system for heavy-duty horizontal extruder

Development of servo electro-hydraulic control system for heavy-duty horizontal extruder

Squeeze casting for metal alloys and composites: An overview of influence of process parameters on mechanical properties and microstructure

Effect of Local Pressurization on Microstructure and Mechanical Properties of Aluminum Alloy Flywheel Housing with Complex Shape

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