Blank and component
AssigneeNippon Steel Corporation
InventorsSoma Sonobe, Yasuhiro Ito
Life of this patent
Estimating the term…
Abstract
Provided is a blank made of a steel and comprising at least two protruding regions (313) having an outer edge (311) protruding outward in in-plane directions, in which a softened part (320) is formed at least partially in the protruding regions (313) and the softened part (320) is formed in at least a part of the outer edge of the protruding regions (313), a Vickers hardness of the softened part (320) is lower than a Vickers hardness of a main portion region (310), and the blank comprises at least two of the protruding regions (313) having the softened part (320).
Claims6
A blank made of a steel and comprising at least two protruding regions having an outer edge protruding outward in in-plane directions,
- wherein a softened part is formed at least partially in the protruding regions and the softened part is formed in at least a part of the outer edge of the protruding regions,
- a Vickers hardness of the softened part is lower than a Vickers hardness of a main portion region, and
- the blank comprises at least two of the protruding regions having the softened part,
- wherein a tensile strength of the main portion region of the blank is 1100 MPa or more, and
- wherein a tensile strength of the softened part is 1000 MPa or less.
A component made of a steel and comprising:
- a bottom surface portion;
- a first vertical wall portion and a second vertical wall portion which stand upright from an end portion of the bottom surface portion;
- and
- at least two corner portions provided between the first vertical wall portion and the second vertical wall portion,
- wherein a softened part is formed at least partially in the corner portion,
- a Vickers hardness of the softened part is lower than a Vickers hardness of a main portion region of the component, and
- the component comprises at least two of the corner portions having the softened part,
- wherein a tensile strength of the main portion region of the component is 1100 MPa or more, and
- wherein a tensile strength of the softened part is 1000 MPa or less.
Dependencies are inferred from the claim text.