Microstructural evolution and mechanical properties of thixoformed Al-Si-Cu alloy connecting rods

Samat, Saziana; Omar, Mohd Zaidi; Mohamed, Intan Fadhlina

doi:10.1016/j.matpr.2022.06.499

Cited by 4 publications

(2 citation statements)

References 15 publications

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“…The SSFM process combines the advantages of liquid casting forming and solid plastic forming, as it has excellent flow mobility in the material and high physical properties in the product, which is regarded as one of the most potential green forming technologies [37][38][39]. As one of the important force transmission parts for the internal combustion engine, the connecting rod is often machined and manufactured with steel, cast iron, iron-based powder, and other materials [14][15][16][17]. With the increasing demand for lightweight automotive components in the market, high-strength aluminum alloy materials have attracted extensive attention from many scholars and businessmen in the connecting-rod-manufacturing field [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Semi-Solid Forging Process of Aluminum Alloy Connecting Rods for the Hydrogen Internal Combustion Engine

Wang,

Jiang,

Zhang

et al. 2024

Applied Sciences

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As an important piece of equipment for hydrogen energy application, the hydrogen internal combustion engine is helpful for the realization of zero carbon emissions, where the aluminum connecting rod is one of the key core components. A semi-solid forging forming process for the 7075 aluminum alloy connecting rod is proposed in this work. The influence of process parameters, such as the forging ratio, sustaining temperature, and duration time, on the microstructures of the semi-solid blank is experimentally investigated. The macroscopic morphology, metallographic structure, and physical properties of the connecting-rod parts are analyzed. Reasonable process parameters for preparing the semi-solid blank are obtained from the experimental results. Under the reasonable parameters, the average grain size is 41.48~42.57 μm, and the average shape factor is 0.80~0.81. The yield strength and tensile strength improvement ratio of the connecting rod produced by the proposed process are 47.07% and 20.89%, respectively.

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Section: Introductionmentioning

confidence: 99%

Semi-Solid Forging Process of Aluminum Alloy Connecting Rods for the Hydrogen Internal Combustion Engine

Wang,

Jiang,

Zhang

et al. 2024

Applied Sciences

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“…Amongst all techniques, the cooling slope (C.S) casting process is considered to be the simplest method of semi-solid metal casting; it requires minimal equipment and operational costs [ 14 , 15 , 16 , 17 ]. The technique promotes homogeneous globular microstructures that reduce segregation and porosity [ 10 , 18 ]. SSM has the ability to improve the mechanical properties [ 17 , 19 , 20 ] and corrosion resistance [ 10 , 21 ] of Al alloys.…”

Section: Introductionmentioning

confidence: 99%

Effect of Semisolid and Heat Treatment Process on Microstructural Refinement of Al–7Si Alloy

et al. 2023

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Improving the engineering properties of Al–7Si cast alloys (300 series) provides an attractive alternative to automotive and aircraft engine industries. The solubility limit of silicon (Si) in Al contributes to the precipitation of flake-shaped Si particles with sharp edges, which function as a stress riser and promote crack propagation during the eutectic phase while also weakening the protective layer’s durability. In this study, the impact of microstructure refinement of Al–7Si alloys by using cooling slope, thixoforming and the T6 heat treatment process on hardness and corrosion resistance behavior was investigated. Results showed that the microstructures of the as-cast alloy had a very coarse dendritic shape, whereas the dendritic transferred to the globular α-Al phase, and the Si particles were replaced into a lamellar- or acicular-like shape after the cooling slope and thixoforming process, respectively. The as-cast, cooling slope and thixoformed samples were subjected to the T6 heat treatment process, which enhanced the hardness to 79, 99 and 104 HV, respectively, due to Si particle refinement. The potentiodynamic test revealed that the corrosion rate dropped to 0.00790 and 0.00736 mmpy−1 in the heat-treated cooling slope and thixoforming samples. This finding can be attributed to the substantially refined Si particles and reduced eutectic phase area due to the smaller cathodic to anodic area ratio.

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Microstructural Characterisation and High-cycle Fatigue Behaviour of Semisolid Al–Si–Cu Alloy

Aziz,

Omar,

Samat

et al. 2023

Inter Metalcast

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Microstructural evolution and mechanical properties of thixoformed Al-Si-Cu alloy connecting rods

Cited by 4 publications

References 15 publications

Semi-Solid Forging Process of Aluminum Alloy Connecting Rods for the Hydrogen Internal Combustion Engine

Semi-Solid Forging Process of Aluminum Alloy Connecting Rods for the Hydrogen Internal Combustion Engine

Effect of Semisolid and Heat Treatment Process on Microstructural Refinement of Al–7Si Alloy

Microstructural Characterisation and High-cycle Fatigue Behaviour of Semisolid Al–Si–Cu Alloy

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