Experimental Investigation and Analysis of Properties and Dry Sliding Wear Behavior of Al -Fe-Si Alloy Matrix Composites
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ORIGINAL PAPER
Experimental Investigation and Analysis of Properties and Dry Sliding Wear Behavior of Al -Fe-Si Alloy Matrix Composites S. Sakthivelu 1
&
P. P. Sethusundaram 2 & M. Ravichandran 3 & M. Meignanamoorthy 3
Received: 26 June 2020 / Accepted: 18 August 2020 # Springer Nature B.V. 2020
Abstract Aluminium alloy finds widespread applications in numerous engineering industries because of its tremendous properties. However aluminium alloy possess poor wear resistance. This study aims to analyze the effect of Al2O3 reinforcement on the dry sliding performance of AA8011 matrix composites for braking applications. AA8011 matrix composite was produced via stir casting (SC) method. The various compositions are AA8011, AA8011- 4 wt.% Al2O3, AA8011–8wt. %Al2O3 and AA801112wt. %Al2O3. The Al2O3 particle distribution in the AA8011 matrix was studied via scanning electron microscopy (SEM). Hardness (H), tensile strength (TS) and compressive strength (CS) of the composites were studied. As of the study it has been found mechanical properties were higher on AA8011–8 wt.% Al2O3 composites. Hence AA8011–8wt. %Al2O3 composite was subjected to wear test at different process parameters load (P), disc velocity (V) and distance (D). The experiments were demonstrated via L9 orthogonal array. The results were optimized through Grey Relational Analysis (GRA). Optimum process parameters to attain the minimum wear rate and coefficient of friction (COF) was identified though the Grey relational analysis (GRA). ‘P’ was the utmost significant factor for the wear resistance and COF. Results showed that, the minimum wear and COF can be achieved for the P - 10 N, V - 3 m/s and D - 1500 m. From ANOVA, it has been found that load is the utmost noteworthy parameter (58.97%) impelling wear and COF. Keywords AA8011 . Al2O3 . Stir casting . Grey relational analysis . ANOVA
1 Introduction Composite materials are rapidly replacing the existing traditional engineering materials despite of its outstanding properties [1]. The properties of the materials may be custom-made via changing the weight percentage of reinforcements in matrix. Aluminium is one of the major material for the fabrication of metal matrix composites (MMC) despite of better strength, excellent wear resistance and good dimensional stability. AMC are being considered as important material in aerospace,
* S. Sakthivelu [email protected] 1
Department of Mechanical Engineering, Mount Zion College of Engineering and Technology, Pudukkottai, Tamilnadu, India
2
Department of Mechanical Engineering, M.Kumarasamy College of Engineering, Karur, Tamilnadu, India
3
Department of Mechanical Engineering, K.Ramakrishnan College of Engineering, Trichy, Tamilnadu, India
military, naval and constructional applications. However many process were available for the fabrication of MMC, SC was found to be an economical and easier way for the production of aluminium matrix composites [2, 3]. Michael Rajan et al. [4] fabricated AA7075 reinforced with TiB2 composites using SC technique. The
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