• Dr.H.A. Deore
• T.R. Bhavsar
• M.V.Panjwani
• N.N.Shetewad
• U.V.Khairnar

AA 7075 based surface composites reinforced with two different filler materials that is Silicon Carbide (Sic) , Tungsten Carbide (Wc) were successfully manufactured via processing with uniform of distribution of all the filler particles. The comparative effect of different filler materials and subsequent age hardening on the microstructural evolution of friction stir processed Aluminium matrix surface composites were characterized using optical microscopy and SEM. Hardness, Impact resistance, Wear resistance was studies using micro hardness test, Impact test, Wear test. The enhancement in micro hardness (142 HV0.1 for received AA 7075 to 251 HV with Sic filler followed by age Hardening), Impact toughness (15.4 KJ to 27.1 KJ) and wear resistance drooped from 8.51 mg to 5.17 mg) were obtained through the addition filler particles during additive friction stir processing followed by age hardening. The enhancement in mechanical and wear properties was mainly to grain refinement. Sic was found to be best among the two filler for the set of FSP, AFSP and Post AFSP with addition of heat treatment. Nearly double increase in micro hardness, and impact toughness was achieved in age hardened SiC filler surface composites.

Friction stir processing, Post process age hardening, Surface composite, Impact toughness, Severe Plastic Deformation, Scanning Electron Microscope, Optical Microscope.

"ADDITIVE FRICTION STIR PROCESSING OF AA(7075)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.693-701, May-2023, Available :http://www.jetir.org/papers/JETIRFX06122.pdf

"ADDITIVE FRICTION STIR PROCESSING OF AA(7075)", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. pp693-701, May-2023, Available at : http://www.jetir.org/papers/JETIRFX06122.pdf