Premium
Inclusion‐Size‐Independent Strength of Glass/Particulate‐Metal Composites
Author(s) -
Troczynski Thomas B.,
Nicholson Patrick S.,
Rucker Carmen E.
Publication year - 1988
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1988.tb05080.x
Subject(s) - materials science , composite material , volume fraction , composite number , toughness , alloy , phase (matter) , deformation (meteorology) , particulates , particle (ecology) , particle size , ecology , chemistry , oceanography , organic chemistry , biology , geology
Dispersed‐phase metallic inclusions limit brittie‐matrix defect size and contribute to toughness via plastic deformation. In this work, it is shown that composite strength depends on the dispersed‐phase volume fraction and not on the diameter of uniformly sized inclusions if the plastic deformation thereof is fully utilized. Experimental results for silicate glass/aluminum‐particle systems substantiate this finding. Particulate composites of 40 vol% Al and 40 vol% Al‐alloy soda–lime–silica glass exhibit 1.5‐ and 2‐fold strength increases, respectively. Both 20 vol% Al composites with 57‐ and 20‐μm particle size showed 1‐ to 3‐fold increases in strength, respectively. Model calculations of strength are overestimates and it is proposed that particle/matrix interfacial separation limits full utilization of the potential plastic work of deformation.