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Properties of AlSi9Mg Alloy Matrix Composite Reinforced with Short Carbon Fibre after Remelting

Łągiewka M., Konopka Z.

Archives of Foundry Engineering

2015

Vol. 15, iss. 3

39--42

The presented work describes the results of examination of the mechanical properties of castings made either of AlSi9Mg alloy matrix composite reinforced with short carbon fibre or of the pure AlSi9Mg alloy. The tensile strength, the yield strength, Young’s modulus, and the unit elongation were examined both for initial castings and for castings made of the remelted composite or AlSi9Mg alloy. After preparing metallographic specimens, the structure of the remelted materials was assessed. A few non-metallic inclusions were observed in the structure of the remelted composite, not occurring in the initial castings. Mechanical testing revealed that all the examined properties of the initial composite material exceed those of the non-reinforced matrix. A decrease in mechanical properties was stated both for the metal matrix and for the composite after the remelting process, but this decrease was so slight that it either does not preclude them from further use or does not restrict the range of their application.

Analiza rozmieszczenia włókien węglowych w kompozycie na osnowie stopu AK7 wykonanego metodą squeeze casting

Konopka Z., Cisowska M.

Archiwum Odlewnictwa

2002

R. 2, nr 4

384--389

Badano rozmieszczenie krótkich włókien węglowych w kompozycie na osnowie stopu AK7 wytworzonego metodą squeeze casting. Przedstawiono wskaźnik określający jednorodność rozmieszczenia włókien na podstawie ilościowych pomiarów struktury metodą kwadratów. Stwierdzono wzrost niejednorodności rozmieszczenia włókien w osnowie kompozytu ze wzrostem ich udziału objętościowego.

The distribution of short carbon fibre reinforcement in AK7 alloy matrix composite processed by squeeze casting was studied. The coefficient determining of distribution homogenity of fibres was pressented by means of quadrat method. Increas of non-uniformity distribution of short carbon fibres with fibre volume fraction increasing in composite was observed.