Effect of Si content in hot dipping aluminium bath on Al–Fe bonding layer of aluminium piston with reinforced cast iron ring

Li, C A; Xiong, Ji; Sun, Lijuan; Liao, Zihao; Peng, Ming-cheng

doi:10.1179/1743284712y.0000000034

Cited by 15 publications

(2 citation statements)

References 20 publications

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“…A liquid aluminium alloy in a pre-heated form is then poured into the prepared inserts, where the temperature of the casting alloy, as indicated by the research of Ramadan et al [20], plays a huge role in the quality of the bimetallic joint, affecting the dissolution of the Al-Fin layer and increasing diffusion, resulting in the formation of a regular and continuous intermetallic layer. Intermetallic phases (IPs) are characterised by the separation of the crystal lattice from the lattice of the elements they are composed of, as well as specific positions in the lattice being occupied by the atoms [19,[21][22][23]. IPs can be formed during liquid solidification or in the solid state.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Duration and Temperature of the Al-Fin Process for the Cast Iron Insert on the Microstructure of the Bimetallic Joint Obtained in the Piston Casting Process

Szwajka

Zielińska-Szwajka

Trzepieciński

2023

Metals

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The aim of this work was to determine the effect of the duration and temperature of the Al-Fin process for casting the bimetallic joint on the formation of the metallurgical bond between the AlSi9 aluminium alloy piston and the cast iron insert. Knowledge about the formation of individual bonding layers has a direct impact on the bonding strength between the aluminium alloy and the EN-GJLA-XNiCuCr15-6-2 austenitic cast iron ring. In the performed tests, the Al-Fin casting process was carried out for different temperatures of the liquid AlSi9 alloy. The temperature of the AlSi9 aluminium alloy varied in the range 700–950 °C in steps of 50 °C. The duration of the Al-Fin process ranged from 1 to 10 min. An optical microscope and a scanning electron microscope were used to study the microstructure of the bimetallic joints. The analysis of the microstructure of the bimetallic bond showed that characteristic layers are formed between the aluminium alloy piston and the cast iron insert: a transition layer, in which iron and aluminium atoms from both joined materials are mixed, and a diffusion layer, in which aluminium and silicon atoms penetrate the surface layer of the joined metals. The thickness of the intermetallic diffusion layer formed between the aluminium alloy and the cast iron insert is thinner and does not depend on the heating time of the aluminium insert in the bath. However, there is a significant effect of both the annealing time and the temperature of the AlSi9 aluminium alloy on the thickness of the transition zone.

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Section: Introductionmentioning

confidence: 99%

Influence of the Duration and Temperature of the Al-Fin Process for the Cast Iron Insert on the Microstructure of the Bimetallic Joint Obtained in the Piston Casting Process

Szwajka

Zielińska-Szwajka

Trzepieciński

2023

Metals

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“…Currently, the Al/Fe bimetals are in increasing demand in the automotive field, which are used to prepare the pistons and cylinders components [1][2][3]. First, the Al alloys contribute to weight reduction, excellent castability as well as high thermal and electrical conductivity [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of heat treatment on microstructures and mechanical properties of Al/Fe bimetal

Jiang

et al. 2018

Materials Science and Technology

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The Al/Fe bimetallic castings were prepared by the compound casting combined with hot-dip galvanising and aluminising, and the effect of the heat treatment on microstructures and mechanical properties of the Al/Fe bimetallic castings was systematically studied in the present work. The thickness of the reaction layer of the Al/Fe bimetallic castings continuously increased with increasing solution temperature or prolonging solution time. However, the excessive solution temperature and solution time promoted cracks of the reaction layer. Regardless of as-cast or heat treatment, there were respectively the Fe2Al5, Al9Fe4Si3, FeAl3, Al8Fe2Si and Al4.5FeSi phases in the reaction layers. The nano-hardnesses of the reaction layer after heat treatment exhibited an increase compared to that of the as-cast condition.

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Effect of surface treatment to inserted ring on Al-Fe bonding layer of aluminium piston with reinforced cast iron ring

Sun

Chang-an

et al. 2014

J. Cent. South Univ.

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Effect of Si content in hot dipping aluminium bath on Al–Fe bonding layer of aluminium piston with reinforced cast iron ring

Cited by 15 publications

References 20 publications

Influence of the Duration and Temperature of the Al-Fin Process for the Cast Iron Insert on the Microstructure of the Bimetallic Joint Obtained in the Piston Casting Process

Influence of the Duration and Temperature of the Al-Fin Process for the Cast Iron Insert on the Microstructure of the Bimetallic Joint Obtained in the Piston Casting Process

Effect of heat treatment on microstructures and mechanical properties of Al/Fe bimetal

Effect of surface treatment to inserted ring on Al-Fe bonding layer of aluminium piston with reinforced cast iron ring

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