Use of a Q and P steel for producing a shaped component for high-wear applications
Assigneethyssenkrupp AG
InventorsNina Kolbe, Patrick Kuhn, Clemens Latuske, Richard Georg Thiessen
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Abstract
The invention relates to the use of a Q&P steel for production of a formed component (2) for high-wear applications, wherein the Q&P steel has a hardness of at least 230 HB, especially at least 300 HB, preferably at least 370 HB, and a bending angle α of at least 60°, especially at least 75°, preferably at least 85°, determined to VDA238-100, and/or a bending ratio of r/t<2.5, especially r/t<2.0, preferably r/t<1.5, where t corresponds to the material thickness of the steel and r to the (inner) bending radius of the steel.
Claims11
A formed component for high-wear applications, the formed component produced by a Q&P steel wherein the Q&P steel has a hardness of at least 370 HB, and at least one of a bending angle α of at least 85°, determined to VDA238-100, and a bending ratio of r/t<1.5, where t corresponds to a material thickness of the steel and r to an inner bending radius of the steel, wherein the component has a material thickness (t) between 1.5 and 15 mm, has a Kernel Average Misorientation (KAM) average of >1.20° and comprises Fe and a remainder including unavoidable impurities from a preparation of, in % by weight:
- C:
- 0.1-0.3%;
- Si:
- 0.7-1.8%;
- Mn:
- 1.5-3.0%;
- Al:
- up to 1.5%;
- N:
- up to 0.008%;
- P:
- up to 0.02%;
- and
- S:
- up to 0.003%.
Dependencies are inferred from the claim text.