The mechanical response of Al-Si-Mg/SiCp composite: influence of porosity

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Tekmen C., Ozdemir I., CÖCEN Ü., Onel K.

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, cilt.360, ss.365-371, 2003 (SCI-Expanded)

• Yayın Türü: Makale / Tam Makale
• Cilt numarası: 360
• Basım Tarihi: 2003
• Doi Numarası: 10.1016/s0921-5093(03)00461-1
• Dergi Adı: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
• Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
• Sayfa Sayıları: ss.365-371
• Anahtar Kelimeler: metal matrix composite, porosity, strength, extrusion
• Dokuz Eylül Üniversitesi Adresli: Evet

Özet

The effect of porosity on the mechanical and fracture behaviour in Al-Si matrix alloy and composites reinforced with SiC particles of 10 and 20 vol.% in the as-cast state and after extrusion process has been studied. Matrix alloy and composites were fabricated by compocasting and extrusion. Samples were characterized by optical microscopy, image analyzer, scanning electron microscopy and tensile tests. The results demonstrate that hot extrusion considerably reduces the porosity, while size and distribution of the reinforcement particles are also affected. In the point of fracture behaviour, the existence of large porosity is more effective. (C) 2003 Elsevier B.V. All rights reserved.