Effect of reinforcement particle amounts on dry sliding wear behavior of shot-peened SiC/A356 composites

YOLCU C., KAHRAMAN F.

MATERIALS TESTING, cilt.64, sa.4, ss.594-601, 2022 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 64 Sayı: 4
  • Basım Tarihi: 2022
  • Doi Numarası: 10.1515/mt-2021-2060
  • Dergi Adı: MATERIALS TESTING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.594-601
  • Anahtar Kelimeler: mechanical surface treatment, metal matrix composites, shot peening, stir casting, wear resistance, ALUMINUM-MATRIX COMPOSITES, MECHANICAL-PROPERTIES, TRIBOLOGICAL BEHAVIOR, TENSILE, FATIGUE, FRICTION, POROSITY, STRESS
  • Dokuz Eylül Üniversitesi Adresli: Evet

Özet

Aluminum matrix composites focus primarily on improving mechanical properties such as hardness and wear, however, the softness of the aluminum matrix and thermal coefficient difference between matrix and reinforcement adversely affect these properties. In the present paper, the wear properties of aluminum matrix composites including different amounts of reinforcement were investigated before and after the shot peening process which was used for decreasing the harmful effects as mentioned. The experimental studies clearly reveal that shot peening, which is a mechanical surface treatment and generally used for improving fatigue resistance of materials, has a beneficial effect on the poor wear behavior of metal matrix composites. Obtaining results also indicate that the microhardness is improved greatly up to a certain depth by shot peening due to the higher dislocation density/microstrain which is evidenced with the X-ray diffraction tests.