| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a steel plate realizing high workability which has not been obtained heretofore, jointly realizing the increase of strength, the improvement of roughening resistance and the improvement of corrosion resistance, and having similar qualities even in the plate thickness of 5 to 10 mm, and to provide a method for producing the same. Ž<P>SOLUTION: A plurality of steel plates are prepared, and a second layer is stuck at least to one side of a part or the whole of the plurality of steel plates, wherein, the second layer is a metal essentially consisting of a component other than Fe. Thereafter, rolling is performed, and heat treatment is performed, so as to recrystallize the steel plates. In this way, the accumulation degree of the ä222} face of the obtained laminated steel plate is remarkably made high, so as to improve its workability. Further, by selecting the kind of each layer in the laminated steel plate, high workability which has not obtained heretofore is realized, and also, the increase of strength, the improvement of roughening resistance and the improvement of corrosion resistance are jointly realized. Further, these excellent qualities can be realized in a thick steel plate whose plate thickness exceeds 5 mm. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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