| 摘要 |
This cold rolled steel sheet contains, in percent by mass, 0.02%-0.4% C, 0.001%-2.5% Si, 0.001%-4.0% Mn, and 0.001%-2.0% Al, and has a total Si and Al content of 1.0%-4.5% by mass. The average pole density for a group of {100}<011>-{223}<110> orientations is 1.0-6.5 and the pole density for the {332}<113> crystal orientation is 1.0-5.0. The microstructure, by area ratio, contains 5%-80% ferrite, 5%-80% bainite, and 2%-30% residual austenite. The microstructure is limited to no more than 20% martensite, no more than 10% pearlite, and no more than 60% tempered martensite. |
