Composite Fabrication by Stir-Cast for Al C355.0 With Particulates Hematite Reinforcements at Different Weight Percentages in Copper Chills with and Without Water Circulation for Mechanical and Fatigue Performance

Year : 2025 | Volume : 13 | Special Issue 03 | Page : 324-336
    By

    Rajesh T R,

  • B.Venkata Narayana,

  • Santhosh N,

  • S.K. Vutukuru,

  • Jaganraj R,

  1. Assistant Professor, Department of Mechanical Engineering, Gopalan College of engineering and Management, Bengaluru, Karnataka, India
  2. Principal and Professor, Department of Mechanical Engineering, SEA College of Engineering and Technology, Bangaluru, Karnataka, India
  3. Head of the Department, Department of Mechanical Engineering, MVJ College of Engineering, Near ITPB, Whitefield, Bangaluru, Karnataka, India
  4. Assistant Professor, Department of Aeronautical Engineering, Vel Tech Rangarajan Dr. Sagunthala R& D Institute of Science and Technology, Avadi, Chennai, Tamil Nadu, India
  5. Head, Department of Aeronautical Engineering, Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology, Avadi, Chennai, Tamil Nadu, India

Abstract

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This study investigates the fabrication of aluminum matrix composites using the stir casting method to analyze the mechanical characterization and fatigue behavior of Al C355.0 composites reinforced with varying weight percentages of hematite particulates. The hematite content was systematically adjusted from 0 wt. % to 12 wt. % in 3 wt. % increments, with the presence of constituent elements confirmed through Energy Dispersive Spectroscopy (EDS). The incorporation of hematite reinforcement significantly enhanced both tensile and compressive strengths compared to the base alloy. A steady increase in strength was observed from 0 wt. % to 9 wt. %, indicating effective load transfer and uniform dispersion of particulates within the matrix. The implementation of water circulation around the mold further improved mechanical properties by promoting better particulate distribution, reducing porosity, and enhancing solidification. Fatigue testing results revealed that composites containing 9 wt. % hematite exhibited superior fatigue resistance, with an increased number of cycles to failure compared to lower reinforcement concentrations. However, at 12 wt. %, excessive particle clustering led to weak interfacial bonding, negatively impacting both mechanical strength and fatigue life. These findings suggest that an optimal hematite concentration of 9 wt. % provides the best combination of mechanical strength and fatigue resistance, particularly when processed using water circulation in copper chills to improve material integrity and performance.

Keywords: Al C355.0, hematite, stir casting, copper chills, water circulation, EDS, tensile, compression, fatigue.

[This article belongs to Special Issue under section in Journal of Polymer and Composites (jopc)]

How to cite this article:
Rajesh T R, B.Venkata Narayana, Santhosh N, S.K. Vutukuru, Jaganraj R. Composite Fabrication by Stir-Cast for Al C355.0 With Particulates Hematite Reinforcements at Different Weight Percentages in Copper Chills with and Without Water Circulation for Mechanical and Fatigue Performance. Journal of Polymer and Composites. 2025; 13(03):324-336.
How to cite this URL:
Rajesh T R, B.Venkata Narayana, Santhosh N, S.K. Vutukuru, Jaganraj R. Composite Fabrication by Stir-Cast for Al C355.0 With Particulates Hematite Reinforcements at Different Weight Percentages in Copper Chills with and Without Water Circulation for Mechanical and Fatigue Performance. Journal of Polymer and Composites. 2025; 13(03):324-336. Available from: https://journals.stmjournals.com/jopc/article=2025/view=0


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Special Issue Subscription Original Research
Volume 13
Special Issue 03
Received 21/10/2024
Accepted 24/03/2025
Published 30/04/2025
Publication Time 191 Days
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