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Journal of Polymer & Composites Original Research Special issue Open Access

Influence of Tib2 Wt. % on the Microstructural and Mechanical Properties of In-Situ Processed Stir-Cast Metal Matrix Composite of Al-6061

  1. Anshu Anand Department of Production and Industrial Engineering, BIT, Mesra,Ranchi
  2. Sanjiv Kumar Tiwari Department of Production and Industrial Engineering, BIT, Mesra, Ranchi
  3. Ved Prakash ACRG, CSIR-CMERI, Durgapur
  4. Sujeet Kumar Gautam Department of Foundry and Forge Technology, NIAMT,Ranchi
  5. Ritesh Kumar Singh Department of Production and Industrial Engineering, BIT, Mesra, Ranchi
  6. Kaushik Kumar Department of Mechanical Engineering, BIT, Mesra, Ranchi

Abstract

Currently, there is an increasing trend in the automotive and aerospace industries towards the adoption of lighter and stronger materials to reduce weight and enhance fuel efficiency. Metal matrix composites must be developed in order to increase the overall performance of automobiles and aircraft as a result of this transition. Among the various composite materials employed, Aluminium Matrix Composites (AMCs) are frequently utilised to meet stringent industrial requirements. The purpose of this study is to gain a better understanding of the mechanical characteristics and microstructure of an in-situ processed stir-cast metal matrix composite of Al-6061/x weight percent TiB2. The material under investigation is an in-situ composite made of aluminum in which the reinforcement, TiB2, is produced in the molten alloy by a salt reaction between K2TiF6 and KBF4. The optical microstructure study of the 2.5 wt% composites revealed a uniform distribution of reinforcements throughout the matrix. Moreover, the formation of reinforcement clusters within the matrix is seen when the weight proportion of the reinforcements grows. These occurrences are attributed to additional obstructions formed during stirring, which restrict the fluidity of the TiB2 particles inside the matrix. Along with microstructure homogeneity, increasing the weight percentage of in-situ TiB2 particles up to 2.5% enhanced the composite's tensile strength without significantly reducing elongation. Additionally, when the weight percentage of TiB2 particles is increased to 2.5%, the hardness of the cast materials rises by 42%.

Keywords

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