Topic
Volume fraction
About: Volume fraction is a research topic. Over the lifetime, 16312 publications have been published within this topic receiving 374181 citations.
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TL;DR: The early stage of chromium precipitation in copper was analyzed at the atomic scale by atom probe tomography (APT) as discussed by the authors, and the precipitate size, three-dimensional shape, density, composition and volume fraction were obtained in a Cu-1Cr-0.1Zr (wt.%) commercial alloy aged at 713 K.
182 citations
TL;DR: In this article, a careful analysis of the available results on the basis of existing models suggests that there is a critical grain size below which the triple junction volume fraction increases considerably over the grain boundary volume fraction and this is suggested to be responsible for the observed softening at small grain sizes.
Abstract: Nanocrystalline materials have a grain size of only a few nanometers and are expected to possess very high hardness and strength values. Even though the hardness/strength is expected to increase with a decrease in grain size, recent observations have indicated that the hardness increases in some cases and decreases in other cases. A careful analysis of the available results on the basis of existing models suggests that there is a critical grain size below which the triple junction volume fraction increases considerably over the grain boundary volume fraction and this is suggested to be responsible for the observed softening at small grain sizes.
181 citations
TL;DR: In this paper, the degree of dispersion of short microfibers in cement, as assessed by electrical resistivity measurement for the case of electrically conductive fibers at a volume fraction below the percolation threshold, is improved by the use of admixtures (namely, silica fume, acrylic particle dispersion, methylcellulose solution, and silane) and fiber surface treatment (such as ozone treatment).
Abstract: The degree of dispersion of short microfibers in cement, as assessed by electrical resistivity measurement for the case of electrically conductive fibers at a volume fraction below the percolation threshold, is improved by the use of admixtures (namely, silica fume, acrylic particle dispersion, methylcellulose solution, and silane) and fiber surface treatment (such as ozone treatment). Acrylic particle dispersion is more effective than latex particle dispersion.
181 citations
TL;DR: Three ZnAg alloys with Ag content ranging from 2.5 to 7.0wt% are designed and displayed superplasticity over a wide range of strain rates providing the possibility of exploiting forming processes at rapid rates and/or even at lower temperatures.
181 citations
TL;DR: In this article, the surface tension of ionic liquid EMISE (1-ethyl-3-methylimidazolium ethyl sulfate) was measured using the forced bubble method at 278.15 to 338.15 K and densities of EMISE using a Westphal balance.
180 citations