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FABRICATION OF SURFACE COMPOSITE BY FRICTION STIR PROCESSING USING A NOVEL DIRECT PARTICLE INJECTION TOOL

Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India

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S. JEROME

Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India

E-mail Address: jerome@nitt.edu

Corresponding author.

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R. JOHN FELIX KUMAR

Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India

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, and

S. PRAKASH

Department of Metallurgical and Materials Engineering, National Institute of Technology, Tiruchirappalli 620015, Tamil Nadu, India

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https://doi.org/10.1142/S0218625X18501822Cited by:3 (Source: Crossref)

Abstract

In this work, aluminum/titanium carbide (Al/TiC) surface composite has been fabricated by friction stir processing using a novel modular Direct Particle Injection Tool (DPI–FSP). The tool has a unique feature wherein the TiC particles have been transferred from the tool itself by spring adjusted plunger movement into the matrix. The microstructural observations from optical and scanning electron microscope (SEM)-EDS results revealed the homogeneous distribution of particles in the stirred zone (SZ) and the thickness of the formed surface composite layer (SCL) is approximately 0.34mm. X-ray diffraction results confirmed that the particles are reinforced in the aluminum matrix, and no intermetallics have been formed in the composite. The microhardness of composite was increased from 68 to 135Hv, and the impact test results showed that the toughness was almost comparable to that of the base metal.

Keywords:

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