INFLUENCE OF B4C AND TiN ON THE MICROSTRUCTURE AND WEAR BEHAVIOR OF FRICTION STIR PROCESSED AA7075 SURFACE COMPOSITE

H. Z. Afra Fathima, C. K. Kevin, K. S. Kishore and J. Sudha
Additional contact information
H. Z. Afra Fathima: Department of Mechanical Engineering, College of Engineering, Guindy, Anna University, Chennai 600025, Tamilnadu, India
C. K. Kevin: Department of Mechanical Engineering, College of Engineering, Guindy, Anna University, Chennai 600025, Tamilnadu, India
K. S. Kishore: Department of Mechanical Engineering, College of Engineering, Guindy, Anna University, Chennai 600025, Tamilnadu, India
J. Sudha: Department of Mechanical Engineering, College of Engineering, Guindy, Anna University, Chennai 600025, Tamilnadu, India

Surface Review and Letters (SRL), 2022, vol. 29, issue 12, 1-14

Abstract: Friction stir processing (FSP), which was the advancement in the friction stir welding technique, is thought to be an economic approach to alloying in the solid state that can be used to make composites. In this study, FSP was carried out to produce AA7075 (B4C+TiN) composite by varying the composition of the reinforcement particles. Microstructural analysis was carried out and the homogenous distribution of the reinforced particles on the surface of AA7075 alloy was ensured. X-ray diffraction studies were carried out to analyze the phases present after fabricating the hybrid surface composites. Microhardness test was performed on the specimens before and after the fabrication process. Grain refinement in the friction stir processed zones was evidently seen in the optical microstructures. The combined effect of the ceramic powders and grain refinement led to increase in the microhardness in the hybrid surface composites compared with the base AA7075 plate. A 33.87% increase in microhardness was observed in the sample AA7075 reinforced with 75% B4C and 25% TiN. Wear testing was carried out at various loads (5, 10, 15 and 20 N) and at different sliding velocities (300, 350, 400 and 450 rpm) and the track distance was maintained at 1000 m. It was observed that the highest wear rate is 3.2×10−7 cm3/Nm for the base plate AA7075 and the sample AA7075 reinforced with 50% B4C and 50% TiN shows the lowest wear rate of 0.56×10−7 cm3/Nm. It is observed that the addition of B4C and TiN has resulted in a significant improvement in the wear resistance of the AA7075 alloy.

Keywords: Boron carbide; titanium nitride; AA7075 alloy; friction stir processing; wear rate (search for similar items in EconPapers)
Date: 2022
References: Add references at CitEc
Citations:

Downloads: (external link)
http://www.worldscientific.com/doi/abs/10.1142/S0218625X22501669
Access to full text is restricted to subscribers

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:wsi:srlxxx:v:29:y:2022:i:12:n:s0218625x22501669

Ordering information: This journal article can be ordered from

DOI: 10.1142/S0218625X22501669

Access Statistics for this article

Surface Review and Letters (SRL) is currently edited by S Y Tong

More articles in Surface Review and Letters (SRL) from World Scientific Publishing Co. Pte. Ltd.
Bibliographic data for series maintained by Tai Tone Lim ().