ゴス方位の珪素鋼単結晶にコーティングしたTi膜の塑性変形後の形態観察

概要

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To clarify the crack morphology after 180°bend-forming and bulge press-forming of Ti films deposited on Goss single crystalof silicon steel, Ti coating by the hollow cathode discharge (HCD) method was done on polished single crystal sheets, and then the Ti-coated samples were 180°bend-formed or bulge press-formed, and then observed by the scanning electron microscope.<BR>Ti-coated Goss silicon steel sample showed no distinctive crack in Ti films on steel sheet, on which slip lines at intervals of 15 μm to the [1210] <SUB>Ti</SUB> direction could be observed in a rectangular-like morphology 1025μm in width and 15 60 μm in length.<BR>The slip morphology of bulge press-forming of Ti films was different from that of 180° bend-forming; the former process produced slips and kinks but no distictive cracks due to the creation of a complicated slips systems arising from areal deformation, the latter process produced fine single slips due to the creation of a single system arising unidirectional deformation.
日本真空協会の論文
2004-03-20