PROCESSING, MICROSTRUCTURE AND WEAR BEHAVIOUR OF LM29 ALLOY – 90 MICRON SIZED B4C PARTICULATES REINFORCED COMPOSITES

This paper manages the creation and assessment of wear properties by presenting 90-micron size B4C particulates into LM29 compound network. LM29 amalgam-based metal framework composites were set up by stir cast strategy. 3, 6 and 9 wt. % of 90 microns estimated B4C particulates were added to the base framework. For every composite, the support particles were pre-warmed to a temperature of 600 degree Celsius and after that scattered in ventures of two into the vortex of liquid LM29 amalgam to improve wettability. The microstructural characterization was finished by utilizing Scanning Electron Microscope (SEM), which uncovered the uniform appropriation of B4C particles in network amalgam, EDS investigation affirmed the nearness of B4C particles in the LM29 composite grid. A pin-on-disc wear testing machine was utilized to assess the wear loss of arranged examples, in which the solidified EN32 steel plate was utilized as the counter face. The outcomes uncovered that the wear misfortune was expanded with increment in typical load and sliding speed for every one of the examples. The outcomes additionally demonstrated that the wear loss of the LM29-B4C composites were lesser than that of the LM29 grid. The worn surfaces and wear debris were characterized by SEM microanalysis.