Wyniki wyszukiwania - BazTech

Ograniczanie wyników

1 Journal of Achievements in Materials and Manufacturing Engineering

1 2013

Znaleziono wyników: 1

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Effect of MWCNTs content on the characteristics of A356 nanocomposite

Rashad R. M., Awadallah O.M., Wifi A. S.

Journal of Achievements in Materials and Manufacturing Engineering

2013

Vol. 58, nr 2

74--80

Purpose: The objective of the present paper is to study the effect of Multiwalled Carbon Nanotubes (MWCNTs) content on the mechanical properties of the A356 hypoeutectic aluminum- silicon based nanocomposite. Design/methodology/approach: The semi-solid route stir casting technique is used for composite processing. MWCNTs and Aluminum powder are premixed by ball milling and green compacted to form small billets. Al-MWCNTs billets are added to the melt and incorporated by vigorous mechanical stirring. The mechanical and metallurgical properties of the produced composite are characterized by, scanning electron microscopy (SEM), optical microscopy, and tensile testing DIN 50125. Findings: MWCNTs are successfully incorporated into the A356 melt up to 1.5 % weight fraction. SEM analysis revealed a uniform dispersion of MWCNTs with good interfacial bonding between the matrix and the MWCNTs. The ultimate tensile strength and elongation of the produced composite are increased by 34% and 250% respectively compared to their corresponding values of monolithic alloy. Research limitations/implications: The research was carried out based on MWCNTs only with a range of percentage additions; it could be extended to single Walled CNTs and graphene sheets with different percentage additions. Stirring time and speed as well as heat treatment can also be applied as further study. Practical implications: This work helps in introducing novel technique in dispersing Nano particulates in metal matrix composites. This could be good potential for new developed composites. Originality/value: A novel approach for MWCNTs reinforcement addition technique is implemented. This technique results in a uniform dispersion of MWCNTs with good interfacial bonding between the matrix and the MWCNTs.