Mechanical and Tribological Behavior of Aluminum Alloy LM13 Reinforced
with Titanium Dioxide Metal Matrix Composites

G B, Veeresh Kumar; Sreenivasulu, Gantasala; C B, Mohan; M G, Ananthaprasad

doi:10.22068/ijmse.2688

Volume 19, Issue 4 (Desember 2022) IJMSE 2022, 19(4): 1-15 | Back to browse issues page

‎ 10.22068/ijmse.2688

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G B V K, Sreenivasulu G, C B M, M G A. Mechanical and Tribological Behavior of Aluminum Alloy LM13 Reinforced with Titanium Dioxide Metal Matrix Composites. IJMSE 2022; 19 (4) :1-15
URL: http://ijmse.iust.ac.ir/article-1-2688-en.html

Mechanical and Tribological Behavior of Aluminum Alloy LM13 Reinforced with Titanium Dioxide Metal Matrix Composites

Veeresh Kumar G B

, Gantasala Sreenivasulu

, Mohan C B

, Ananthaprasad M G

Abstract: (8858 Views)

In the present research work physical, mechanical and tribological behavior of Aluminum (Al) alloy LM13 reinforced with Nano-sized Titanium Dioxide (TiO₂) particulates were fabricated, mechanical and tribological properties were investigated. The amount of nano TiO₂ particulates in the composite was added from 0.5% to 2% in 0.5 weight percent (wt %) increments. The Al-LM13-TiO₂ Metal Matrix Composites (MMCs) were prepared through the liquid metallurgical method by following the stir casting process. The different types of Al LM13-TiO₂ specimens were prepared for conduction of Physical, Mechanical, and Tribological characteristics by ASTM standards. Microstructural images, hardness, tensile, and wear test results were used to evaluate the effect of TiO₂ addition to Al LM13. Scanning Electron Microscope (SEM), Energy Dispersive Spectroscopy (EDS), and X-Ray Diffractometer (XRD) were used to examine the microstructure and distribution of particulates in the matrix alloy. In the Al LM13 matrix, microstructure analysis indicates a consistent distribution of reinforced nanoparticles. The attributes of the MMCs, including density, hardness, tensile strength, and wear resistance, were improved by adding up to 1 wt% TiO₂. Fractured surfaces of tensile test specimens were studied using SEM pictures. The standard pin-on-disc tribometer device was used to conduct the wear experiments; the tribological characteristics of unreinforced matrix and TiO₂reinforced composites were investigated. The composites’ wear resistance was increased by adding up to 1 wt% of TiO₂. The wear height loss of Al LM13-TiO₂ composite increased when the sliding distance and applied load were increased. Overall, the Al LM13 with one wt% of TiO₂ MMCs showed excellent Physical, Mechanical and Tribological characteristics among all the percentages considered in the present study.

Keywords: Aluminum alloy LM13, TiO2, Density, Hardness, Wear

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Evaluation of Mechanical and Tribological behavior of Aluminum Alloy LM13 Reinforced with Titanium Dioxide Metal Matrix Composites
Highlights of the Present Study

The highlight of the present study is to fabricate Aluminum based particulate reinforced MMCs with 2 weight percentage of reinforcement content. The fabrication of composites has been done through liquid metallurgy route via stir casting technique.
For the present studies Al LM13 is selected as matrix materials and TiO₂ particulates were selected as reinforcement materials. The extent of incorporation of reinforcement material in the matrix alloy was varied 2wt%.
Cylinders of cast composites were obtained. The test samples were prepared as per ASTM standards for different tests planned. The cast alloy and composites were subjected EDX, XRD, and SEM Studies,
XRD, Energy Dispersive Spectroscopy and Scanning Electron Microscopy images were used to study Al LM13-TiO₂developed composites before & after the fracture and wear tests.
The cast alloy and composites were subjected to evaluation of different properties such as Physical, Mechanical (Hardness, Strength, fracture and percentage elongation studies), and Wear Resistant properties.
The wear tests were conducted using Pin-on-Disc wear testing machine in which cast alloys and composites are used as pin specimen which is under sliding contact with EN31 steel disc counter face material under different test conditions.
The dry wear test results indicate that, the Al LM13-TiO₂MMCs offered higher wear resistance than that of matrix alloy. Increased loads and sliding distances in wear test resulted in higher wear loss.
Additionally, TiO₂ particulates contributed significantly in enlightening Al LM13-TiO₂MMCs wear resistance upto 1wt%.
From the overall investigations and findings, it may be concluded that Al LM13-1wt% TiO₂ exhibits significantly improved physical, mechanical, and tribological properties in comparison with the other Al LM13-1wt% TiO₂MMCs considered in the present study.

Thanking you sir,
- S/d -
Dr. Veeresh Kumar G B

Type of Study: Research Paper | Subject: Polymers

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