Continuously annealed or hot galvanized cold rolled transformation induced plasticity steel plate and preparation method thereof
A phase change induced plasticity and hot-dip galvanizing technology, which is applied in heat treatment equipment, heat treatment furnaces, manufacturing tools, etc., can solve the problems of low strength of TRIP steel and increase the cost of steel plates, etc., and achieve the effect of good strength
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[0049] The present invention will be further described in the following examples.
[0050] The following examples illustrate the present invention more specifically. However, the present invention is not limited by the following embodiments, and can also be implemented with appropriate changes within the scope consistent with the stated principles, which are all included in the technical scope of the present invention.
[0051] Table 1 shows the chemical composition of the example steel of the present invention (the balance is iron and unavoidable impurities). After obtaining the continuous casting slab, hot rolling is performed. After heating at 1250°C for 2 hours, hot rolling is performed, the final rolling temperature is 880°C, the coiling temperature is 650°C, and then air-cooled to room temperature. The thickness of the hot-rolled plate is 3.5mm. Then cold-rolled, the thickness of the cold-rolled sheet is 1.5mm.
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