Fracture toughness (K1C) and tensile properties of as-cast and age-hardened aluminium (6063)–silicon carbide particulate composites
By K. K. Alaneme, A. O. Aluko. 2012
188 citations recorded by the source corpus.
Abstract The tensile and fracture behavior of as-cast and age-hardened aluminium (6063), silicon carbide particulate composites produced, using borax additive and a two step stir casting method, was investigated. Al (6063), SiC p composites having 3, 6, 9, and 12 volume percent of SiC were produced, and sample representatives of each composition were subjected to age-hardening treatment at 1800 °C for 3 hours. Tensile and Circumferential Notched Tensile (CNT) specimens were utilized for tension testing to evaluate, respectively, the tensile properties and fracture toughness of the composites. Experimental results show that the ageing treatment resulted in little improvement in the tensile strength of the composites. The tensile strength and yield strength increased to almost the same magnitude with an increase in SiC volume percent for both as-cast and age-hardened conditions. The increase was, however, more significant for the 9 and 12 volume percent SiC reinforcement. The strain to fracture was less sensitive to volume percent SiC reinforcement and ageing treatment, with values less than 12% strain to fracture observed in all cases. The fracture toughness, however, improved significantly with ageing treatment (as-cast K 1 C = 6.63 − 6.71 MPa m 1 / 2 ; ageing treatment K 1 C = 7.57 − 8.2 MPa m 1 / 2 ).
Subfields: Aerospace Engineering, Ceramics and Composites, Mechanical Engineering
View Paper: https://www.semanticscholar.org/paper/d9ae6e4532fe0caebebd1926bae7d61a8a74ff55
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Citations in the corpus
- Corrosion and wear behaviour of rice husk ash—Alumina reinforced Al–Mg–Si alloy matrix hybrid composites (2013, background): “The wear properties of AMCs have been reported to be dependent on factors such as the nature, size, and volume percent of the reinforcing particles [22,23].”
- Aluminium matrix hybrid composites: a review of reinforcement philosophies; mechanical, corrosion and tribological characteristics (2015, background): “Conventional AMCs reinforced with SiC or Al2O3 have shown improved strength and specific stiffness over the monolithic alloys but this occurs at the expense of ductility and fracture toughness [10,13,28].”
- Characterization of Al-7075 metal matrix composites: a review (2019, background): “reinforced particles in aluminum increases the tensile strength, hardness, yield strength, compressive strength, flexural strength, whereas ductility is decreased [9,11,13,14,19,20].”
- Microstructure, mechanical and fracture properties of groundnut shell ash and silicon carbide dispersion strengthened aluminium matrix composites (2016, methodology): “The fracture micro-mechanism of particulate reinforced MMCs have been attributed to particle cracking, interfacial cracking and particle debonding (Alaneme and Aluko, 2012b).”