Effect of VN and TiB2-TiCx Reinforcement on Wear Behavior of Al 7075-Based Composites

Bai, Yaping; Wei, Jianhong; Lei, Naqing; Li, Jianping; Guo, Yongchun; Liu, Mengmeng

doi:10.3390/ma14123389

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…Some areas of the composite surface exhibit porosity, which is attributed to gas escaping during the cooling process [23]. Additionally, the formation of oxide on the composite's surface is observed, likely due to atmospheric cooling, as confirmed by the SEM image [24].…”

Section: Micro Structural Examinationmentioning

confidence: 68%

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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Section: Micro Structural Examinationmentioning

confidence: 68%

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

et al. 2023

Mater. Res. Express

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“…vt is the tangential cutting speed, vr is the radial cutting speed, and vu is the combined speed of the tangential and radial directions of the workpiece surface. μf is the friction coefficient, and it can be seen that the friction coefficient of aluminum alloy is between 0.36 and 0.41 [27]. In this paper, the simplified calculation is taken as 0.4. hj(ϕj(z)) is the cutting thickness, the expression is as:…”

Section: Micro-element Milling Force Modelmentioning

confidence: 99%

Residual stress formation mechanism considering cutting energy in milling of 7075 aluminum alloy

Zheng,

Tian,

et al. 2023

Int J Adv Manuf Technol

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Aluminum alloy has the characteristics of good corrosion resistance and high strength, so aluminum alloy workpiece is widely used in the aerospace field.However, in milling, the surface of the aluminum alloy workpiece generates residual stress due to the coupling of force and heat, which seriously affects the fatigue performance of the workpiece. To investigate the residual stress formation mechanism, an analyzed model of machining-induced residual stress considering energy conversion in milling process was proposed. In this process, the milling force prediction model is established. Then, an effective cutting work model is established based on the milling force model. After that, the strain energy density of the machined surface layer was analyzed and the strain energy solution model was established.Subsequently, the prediction models of mechanical stress, thermal stress and residual stress are established respectively, and the residual stress data are brought into the strain energy model to obtain the strain energy. Afterwards, the functional transformation relationship between effective cutting work and strain energy storage per unit time is analyzed. Finally, several milling experiments were carried out to verify the predicted milling force and residual stress. Experimental results show that errors between the predicted results and the experimental results are about 5 % and 15 %, respectively, and the functional transformation results show that the stored strain energy per unit time increases with the increase of the effective cutting work.

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“…There are various methods for producing aluminum composites, such as stir casting [4,5], powder metallurgy [6,7], centrifugal casting [8,9], ultrasonication-assisted stir casting [3,10], and spray casting [11,12]. Stir casting and powder metallurgy are the most common techniques and have been extensively researched due to their versatility, ease of use, and commercial feasibility.…”

Section: Introduction To Abrasive Wear Of Aluminum Compositesmentioning

confidence: 99%

A Review on Abrasive Wear of Aluminum Composites: Mechanisms and Influencing Factors

Valizade,

Farhat

2024

J. Compos. Sci.

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Aluminum matrix composites (AMCs) find extensive use across diverse industries such as automotive, aerospace, marine, and electronics, owing to their remarkable strength-to-weight ratio, corrosion resistance, and mechanical properties. However, their limited wear resistance poses a challenge for applications requiring high tribological performance. Abrasive wear emerges as the predominant form of wear encountered by AMCs in various industrial settings, prompting significant research efforts aimed at enhancing their wear resistance. Over the past decades, extensive research has investigated the influence of various reinforcements on the abrasive wear behavior of AMCs. This paper presents a comprehensive review of the impact of different variables on the wear and tribological response of aluminum composites. This review explores possible wear mechanisms across various tribosystems, providing examples drawn from the analysis of existing literature. Through detailed discussions on the effects of each variable, conclusions are drawn to offer insights into optimizing the wear performance of AMCs.

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Effect of VN and TiB2-TiCx Reinforcement on Wear Behavior of Al 7075-Based Composites

Cited by 5 publications

References 31 publications

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

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

Residual stress formation mechanism considering cutting energy in milling of 7075 aluminum alloy

A Review on Abrasive Wear of Aluminum Composites: Mechanisms and Influencing Factors

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