Tailored properties by post hot forming processing

Details Tailored properties by post hot forming processing Tailored properties by post hot forming processing

C - Chemistry, Metallurgy

21

D

C21D 1/34 (2006.01)

Patent

CA 2744233

A method of forming a product from an initial blank comprises subjecting the initial blank to a hot forming and press hardening operation to form the product with substantially a uniform first tensile strength. Subsequently, the product is subjected to post hot-forming processing in which a first region of the product is heated selectively to above a known temperature, using one of conduction heating, resistance heating and induction heating. The first region is then cooled, such that the first region attains a second tensile strength that is substantially less than the first tensile strength.

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