Enhanced elevated temperature wear resistance of Al−17Si−5Cu alloy after a novel short duration heat treatment

Hazra, Biplab; Bera, Supriya; Show, Bijay Kumar

doi:10.1007/s12613-019-1745-5

Cited by 11 publications

(2 citation statements)

References 30 publications

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“…Changes in the microstructure can also affect the material's wear resistance. For example, a finer-grained structure may reduce the likelihood of abrasive wear [30].…”

Section: Optimization Of Heating Process Parametersmentioning

confidence: 99%

Optimization on hardening process parameters of alumnium alloy 7075 based composites using gra approach

et al. 2023

Mater. Res. Express

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Aluminium Metal Matrix Composites (AMMCs) are the essential need for applications such as aerospace, aircraft, marine, transport and automobiles due to their best mechanical, corrosion and tribological behaviour. In this research, Alumnium alloy 7075 is chosen for matrix material because of its much more need of mechanical, corrosion and tribological properties enhancement. The nano zirconium di oxide (ZrO2) is chosen for reinforcement to fulfil the properties requirement of AA7075 for various applications. The AA7075/wt. % Zr02 (x= 0, 5, 10, 15 and 20) composites are prepared by stir casting route. The fabricated composites are subjected to tensile strength and density test to determine the best combination of AA8009 based composites. The best combination of AA7075 based composites is subjected to EDAX and SEM test to determine the presence of elements of reinforcement and matrix material. The stir casted AA7075 based composites are further subjected to hardening under different conditions to enhance their required properties. The input parameters of hardening are age hardening temperature, hardening duration and cooling environment. The chosen response parameters are micro hardness and wear loss. The micro hardness and wear resistance of composites are determined by employing tensile Vickers hardness tester and pin on disc equipment. The optimization is done by using Grey Relational Analysis (GRA). The optimized age hardening process parameters are hardening temperature (400°C), hardening duration (270 minutes) and cooling environment (Furnace cooling). The obtained higher micro hardness and lower wear loss of confirmation test combination specimen is 138 HV and 27 mg respectively.

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“…Changes in the microstructure can also affect the material's wear resistance. For example, a finer-grained structure may reduce the likelihood of abrasive wear [30].…”

Section: Optimization Of Heating Process Parametersmentioning

confidence: 99%

Optimization on hardening process parameters of alumnium alloy 7075 based composites using gra approach

et al. 2023

Mater. Res. Express

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“…Moreover, the Al-Si alloys are highly recyclable, making them more costeffective [16]. As a result, they are widely used in various industries, including automotive, aerospace, structural, shipbuilding, and packaging, for a variety of applications, such as engine cylinders, cylinder heads, compressor scrolls, aircraft stabilisers, crankcases, intake manifolds, cylinder blocks, cellular phone and domestic kitchen components, and more [17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Thermochemical modelling and mechanical property of the Al-7.6Si-xZr alloy

Biswas

Das

et al. 2023

Materials Science and Technology

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This study utilised the gravity casting method to modify hypoeutectic Al-7.6Si alloys with Zr at varying weight percentages (0.1%, 0.2%, and 0.3%). The unmodified alloy typically consists of a needle or platelike eutectic silicon within the dendritic α-Al phase. The addition of Zr increases the liquidus temperature of the alloy and results in the formation of ZrSi and ZrSi2 compounds, which act as nucleation sites for both the eutectic Si and α-Al grains. As a result, the needle or platelike eutectic silicon transforms into a fibrous structure with a more uniform distribution, and the α-Al phase becomes finer and globular. These microstructural changes lead to improved bulk hardness, ductility, and mechanical properties of the alloy.

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