Determining the Significance of Cobalt Addition on the Wear Characteristics of Al-6.6Si-0.4Mg Hypoeutectic Alloy Using Design of Experiment

The MMC technique is the most effective contrast method when compared with other techniques. By using the method of high energy stir casting, Aluminium alloy Al2219 is reinforced with various percentages of Si3N4 (0, 3, 6, and 9%) particles. X-ray diffraction along with Scanning electron microscope was performed to characterize the composite. The mechanical and thermal behaviours such as differential thermal analysis thermo gravimetric analysis/, tensile , wear and hardness behaviours were investigated. By using electro chemical potentiodynamic polarization test, the consequence of heat treatment on the corrosion behaviour of the composites when compared to its matrix in 3.5 % NaCl when at 600 rpm was also investigated. In this experimental study, the wear of the aluminium composites was signi cantly decreased on addition of Si3N4 particles. The study also revealed that, since the inclusion of Si3N4 in the samples and compared to the base aluminium alloy, the mechanical properties of the composites, such as wear resistance , hardness and tensile strength increased by percentage. The surface morphology and Scanning electron microscope analysis of worn surfaces in the test pieces unfold that with the increase in reinforcement content, wear rate decreases.

show abstract

“…This is mostly due to the Si 3 N 4 particle's hardness. Many other researchers have found similar patterns[1,13,20, 30].…”

mentioning

confidence: 54%

Tribological, Thermal and Corrosive Behaviour of Aluminium Alloy 2219 Reinforced by Si3N4 Nanosized Powder

Manjunatha¹,

Narayana²,

Raja³

et al. 2021

Silicon

View full text Add to dashboard Cite

show abstract

“…It can be understood that the resistance to wear of the AMMC increases with increase in load and increase in aging time, which can be attributed to the presence of TiC particles which are hard phased increases the overall strength of the material by exposing more TiC particles when load is increased, and the creation of a layer as shown in Fig. 14, the Mechanical Mixed Layer (MML) and thereby shoots up the resistance to wear [21,22]. The optimum aging time was found to be between 4 hours to 5 hours where it can be noted that the value specific wear rate decreases.…”

Section: Influence Of Interaction Parameters On the Responsesmentioning

confidence: 99%

Impact of Heat Treatment Analysis on the Wear Behaviour of Al-14.2Si-0.3Mg-TiC Composite using Response Surface Methodology

Kumar¹,

Shankar²,

Balachandran³

et al. 2021

Tribol. Ind.

Self Cite

View full text Add to dashboard Cite

Al-14.2Si-0.3Mg Alloy reinforced with hard phased TiC coarse particulates (10 wt-%) was contrived using the liquid metallurgy route. The so fabricated aluminium metal matrix composites was made to undergo solutionising at 525 0 C for 12 hours in a heat treatment furnace and was subsequently water quenched to room temperature. The developed composite was then kept for age hardening at varying temperatures and time for enhanced tribological properties. A pin on disc Tribometer (ASTM-G99) was utilised to study the wear properties of the fabricated composite. Aging temperature ( 0 C), applied load (N) and Aging time (hours) were chosen as the process parameters for analysing the material's resistance to wear. Using response surface methodology the influence of reinforcement in the wear properties of the composite was studied. The design of the regression equation was prepared and the impact of each experimental parameter was scrutinized. Results depict that with an increase in the aging temperature, aging time and load, there observed a variation in the materials wear properties. The worn-out surface of the metal matrix composite was then investigated with the help of the Scanning Electron Microscope (SEM).

show abstract

“…An appropriate agreement was observed between experimental and modeling results. The application of using the Minitab software was previously proven by Balachandran et al [24], Kumar et al [25] and Sreedev et al [26]. Balachandran et al [24] investigated NBR composites and tried to optimize composite properties by the regression analysis.…”

Section: Regression Modelmentioning

confidence: 99%

“…They found the second-order polynomial equation and the response surface by the regression analysis in Minitab software. Sreedev et al [26] determined the significance of cobalt addition on the wear characteristics of the aluminum alloy by analyzing with a response surface methodology.…”

Section: Regression Modelmentioning

confidence: 99%

Archives of Foundry Engineering

Azadi,

Behmanesh,

Aroo

2021

View full text Add to dashboard Cite

Aluminum alloys, due to appropriate strength to weight ratio, are widely used in various industries, including automotive engines. This type of structures, due to high-temperature operations, are affected by the creep phenomenon; thus, the limited lifetime is expected for them. Therefore, in designing these types of parts, it is necessary to have sufficient information about the creep behavior and the material strength. One way to improve the properties is to add nanoparticles and fabricate a metal-based nano-composite. In the present research, failure mechanisms and creep properties of piston aluminum alloys were experimentally studied. In experiments, working conditions of combustion engine pistons were simulated. The material was composed of the aluminum matrix, which was reinforced by silicon oxide nanoparticles. The stir-casting method was used to produce the nano-composite by aluminum alloys and 1 wt.% of nanoparticles. The extraordinary model included the relationships between the stress and the temperature on the strain rate and the creep lifetime, as well as various theories such as the regression model. For this purpose, the creep test was performed on the standard sample at different stress levels and a specific temperature of 275 ℃. By plotting strain-time and strain rate-time curves, it was found that the creep lifetime decreased by increasing stress levels from 75 MPa to 125 MPa. Moreover, by comparing the creep test results of nanoparticle-reinforced alloys and nanoparticle-free alloys, 40% fall was observed in the reinforced material lifetime under 75 MPa. An increase in the strain rate was also seen under the mentioned stress. It is noteworthy that under 125 MPa, the creep lifetime and the strain rate of the reinforced alloy increased and decreased, respectively, compared to the piston alloy. Finally, by analyzing output data by the Minitab software, the sensitivity of the results to input parameters was investigated.

show abstract

Determining the Significance of Cobalt Addition on the Wear Characteristics of Al-6.6Si-0.4Mg Hypoeutectic Alloy Using Design of Experiment

Cited by 6 publications

References 20 publications

Tribological, Thermal and Corrosive Behaviour of Aluminium Alloy 2219 Reinforced by Si3N4 Nanosized Powder

Tribological, Thermal and Corrosive Behaviour of Aluminium Alloy 2219 Reinforced by Si3N4 Nanosized Powder

Impact of Heat Treatment Analysis on the Wear Behaviour of Al-14.2Si-0.3Mg-TiC Composite using Response Surface Methodology

Archives of Foundry Engineering

Contact Info

Product

Resources

About