日本金属学会誌

J. Japan Inst. Metals, Vol. 63, No. 12 (1999),
pp. 1561-1566

Recrystallization Texture Formation of Cold Rolled 3%Si-Fe<{100}>//ND Single Crystal Related to Active Slip Systems

Tetsuo Toge, Mineo Muraki and Takashi Obara

Technical Research Laboratories, Kawasaki Steel Corporation, Kurashiki, 712-8511

Abstract:

A 3%Si-Fe (100)[011] single crystal was investigated to analyze its texture evolution during rolling and recrystallization. Cold rolled (100)[011] could be fully recrystallized by utilizing dynamic strain aging, and a sharp recrystallized texture was obtained.
Rolled texture maintained the initial orientation (100)[011] with TD rotational dispersion. The recrystallized texture was composed of eight orientations rotated about 30 degrees around eight <{112}> axes from the initial orientation (100)[011], which is the central orientation of cold rolled matrix. On the assumption that single slip operates locally, recrystallized texture formation is explained by eight kinds of {110}<{111}> slip cause crystal rotations around eight kinds of <{112}>, which are perpendicular to both slip plane normal and slip direction. The sense of the crystal rotation is always towards the direction which makes the angles between slip plane and rolling plane increase, which is consistent with Furubayashi's Hard Model.

It was found, furthermore, that the intensity of each component of recrystallized texture corresponds to the Schmid factor of the slip system to which recrystallized orientation is attributable. Such correspondence between the intensity of each recrystallized orientation and Schmid factor was clearly verified by an experiment using single crystal whose initial orientation deviates ten degrees deviated from (100)[011] around ND axis.


(Received April 8, 1999; In Final Form Aubust, 27, 1999)

Keywords:

single crystal, cold rolling, texture, crystal rotation, slip system, Schmid factor, rolling temperature


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