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The Effect Of Grain Size On The Mechanical Properties Of Aluminum

Jeong G., Park J., Nam S., Shin S.-E., Shin J., Bae D., Choi H.

Archives of Metallurgy and Materials

2015

Vol. 60, iss. 2B

1287--1291

Although many studies have focused on the unique plastic deformation behavior of nanocrystalline aluminum (e.g., the positive deviation from Hall-Petch relation, the unusual yield-drop phenomenon in tensile mode, etc.), the data reported by different research groups are inconsistent with each other, possibly because of different fabrication processes. In this study, aluminum samples with a wide grain-size spectrum – from a few micrometers down to 100 nanometers – are manufactured by powder metallurgy. The grain size was measured by X-ray diffraction analysis and transmission electron microscope observation. Furthermore, the tensile behavior, which varied according to a grain size, is discussed with a comparison of the theoretical models.

More maps for which F(T)=F(Tn)

Jeong G., Rhoades B.

Demonstratio Mathematica

2007

Vol. 40, nr 3

671-680

We continue our investigation of situations in which the fixed point sets for maps and their iterates are the same.