Dharmpal Deepak

TL;DR: In this article, a surface composite based on 5083Al matrix reinforced with nano-sized silicon carbide particles has been fabricated by Friction Stir Processing (FSP), and the texture, hardness and wear behavior of the surface composite have been investigated and compared with those of 5083 al alloy.

TL;DR: In this article, the influence of fiber treatment on tensile properties of sisal fibers reinforced in polyethylene (high density) composite is scrutinized and compared with 50-50% mixture of HDPE samples.

TL;DR: In this paper, an advanced hybrid process consisting of ultrasonic, electrolytic and magnetic energy was proposed to improve machining and finishing efficiency of 316L cylindrical work piece.

Abstract: In this paper hardness, microstructure and tribological behavior of as-cast magnesium/SiC composites produced by stir casting and processed by friction stir processing were studied and results were compared with as-cast magnesium/SiC composite. Magnesium/SiC metal matrix composites containing SiC reinforcement were produced by stir casting route and subjected to friction stir processing at a tool rotation speed of 1300 rpm and a transverse speed of 50 mm min−1. The outcomes of the study clearly revealed that the friction stir processing (FSP) resulted into 45% improvement in the hardness, reduction in the grain size from 170 μm to 3 μm and improved distribution of particles in the matrix of the developed composites. The tribological results exhibit that the wear resistance of processed composite was significantly improved and coefficient of friction is lowered as compared to their counterparts. The scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS) analysis of worn surfaces were carried out in order to have in depth understanding of the wear mechanisms.