Steel plate excellent in shape freezing property and method...

Details Steel plate excellent in shape freezing property and method... Steel plate excellent in shape freezing property and method...

C - Chemistry, Metallurgy

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C

C22C 38/06 (2006.01) C21D 1/18 (2006.01) C21D 8/02 (2006.01) C21D 9/46 (2006.01) C22C 38/00 (2006.01) C22C 38/02 (2006.01) C22C 38/04 (2006.01) C22C 38/12 (2006.01)

Patent

CA 2422753

A ferritic steel sheet wherein a mean value of X-ray random intensity ratios of a group of {100} < 011 > to {223} < 110 > orientations is 3.0 or more and a mean value of X-ray random intensity ratios of three crystal orientations of {554} < 225 > , {111} < 112 > , and {111} < 110 > is 3.5 or less and further at least one of the r values in a rolling direction and a direction at a right angle of that is 0.7 or less.

L'invention concerne une tôle d'acier ferritique dont la surface supérieure comprend un premier groupe de cristaux dont l'orientation est comprise entre {100}<011> et {223}<110>, qui présentent une intensité aléatoire moyenne des rayons X égale ou supérieure à 3,0, et trois orientations cristallographiques :{554}<225>, {111}<112> et {111}<110> pour lesquelles l'intensité moyenne aléatoire des rayons X est égale ou inférieure à 3,5. De préférence au moins une des valeurs r dans la direction de laminage et dans une direction perpendiculaire à cette dernière est égale ou inférieure à 0,7.

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