caa a22 4500 463231066 CHVBK 20180405153242.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s10853-006-0885-y doi (NATIONALLICENCE)springer-10.1007/s10853-006-0885-y Plasticity initiation and subsequent deformation behavior in the vicinity of single grain boundary investigated through nanoindentation technique [Elektronische Daten] [Takahito Ohmura, Kaneaki Tsuzaki] The initiation of plasticity and the subsequent state in the vicinity of a single grain boundary during indentation-induced deformation were investigated to understand an elementary step of a stress-strain behavior of polycrystalline materials. Nanoindentation measurements on several points on a single grain boundary and the grain interior of an interstitial-free steel and an analysis on the pop-in behavior and the plastic nanohardness were carried out. The pop-in load P c that was obtained on the loading curve is different for each measurement. However, the loading curves overlap one another and the unloading curves coincide as well after the pop-in event. The nanohardness Hn has no dependence on the P c in the range of 150-550μN. The relation between P c and Δh can be expressed as a simple cubic polynomial function based on a geometrically necessary dislocation loop model. The fitted function differed for various grains with different crystallographic orientations. Springer Science+Business Media, LLC, 2007 Ohmura Takahito Structural Metals Center, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut Tsuzaki Kaneaki Structural Metals Center, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1728-1732 0022-2461 42:5<1728 2007 42 10853 https://doi.org/10.1007/s10853-006-0885-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0885-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ohmura Takahito Structural Metals Center, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 700 1- Tsuzaki Kaneaki Structural Metals Center, National Institute for Materials Science, 305-0047, Tsukuba, Ibaraki, Japan aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/5(2007-03-01), 1728-1732 0022-2461 42:5<1728 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer