Effect of the B4C Reinforcement Ratio on Surface Roughness of Al6061 Based Metal Matrix Composite in Wire-EDM Machining

KARABULUT Ş., KARAKOÇ H., ÇITAK R.

8th International Conference on Mechanical and Aerospace Engineering (ICMAE), Prague, Çek Cumhuriyeti, 22 - 25 Temmuz 2017, ss.812-815 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası:
  • Basıldığı Şehir: Prague
  • Basıldığı Ülke: Çek Cumhuriyeti
  • Sayfa Sayıları: ss.812-815
  • Anahtar Kelimeler: Al 6061, B4C reinforcement, metal matrix composites, WEDM, surface roughness, DISCHARGE, ELECTRODE, WEDM
  • Gazi Üniversitesi Adresli: Evet

Özet

This study investigates the machining properties of Al6061 reinforced with boron carbide (B4C) and the effect of cutting parameters on surface roughness in wire electrical discharge machining of (WEDM). Four Al 6061 metal matrix composites reinforced with 5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.% B4C were fabricated by powder metallurgy. Influence of the B4C reinforcement particles on surface roughness were studied during the WEDM. Experiments were conducted based on Taguchi L-18 (2(1) x 3(2)) with a mixed orthogonal array and the optimal machining parameters were investigated for the surface finish. The machining parameters were analyzed by using main effect graphs and analysis of variance (ANOVA). The results showed that the reinforcement particles were uniformly dispersed in matrix structure and the surface quality of machined specimens were improved with increasing the weight fraction of the B4C reinforcement. The best surface roughness values were measured at lower peak current (IP) and surface quality of the machined part was decreased with increasing peak current.