Microstructure and strengthening of metal matrix composites

Autor:	L. C. Davis, John E. Allison, C. Andres
Rok vydání:	1998
Předmět:	Materials science Mechanical Engineering Composite number Modulus Condensed Matter Physics Microstructure Mechanics of Materials Ultimate tensile strength Volume fraction Particle General Materials Science Particle size Composite material Elastic modulus
Zdroj:	Materials Science and Engineering: A. 249:40-45
ISSN:	0921-5093
DOI:	10.1016/s0921-5093(98)00561-9
Popis:	The effects of composite microstructure (e.g. particle size and volume fraction) on the mechanical properties of 2080 Al matrix composites with SiC particulates are considered. Finite element calculations on unit cell representations are compared to tensile measurements. For fine particles, good agreement is obtained for inclusion volume fractions as large as 30%. Coarse particle materials show evidence of particle cracking, which degrades the modulus and yield stress. In a new computational approach, the unit cell of a cracked particle and surrounding matrix is embedded in an effective medium with properties of a composite with intact particles. By appropriate choice of the portion of cracked particles, experiments on materials with a broad distribution of particle sizes are reproduced by the model calculations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::deec3ff01ebdcca27c3bc23b903e7aca https://doi.org/10.1016/s0921-5093(98)00561-9 Zobrazit plný text záznamu Full Text from ScienceDirect