Armor plate with 2000 MPA-graded tensile strength, and manufacturing method therefor
US-10865458-B2 · Dec 15, 2020 · US
Dual hardness steel article
US9182196B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9182196-B2 |
| Application number | US-98621311-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 7, 2011 |
| Priority date | Jan 7, 2011 |
| Publication date | Nov 10, 2015 |
| Grant date | Nov 10, 2015 |
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Abstract
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A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air hardenable steel alloy part comprising a second mating surface and having a second part hardness. The first air hardenable steel alloy part is metallurgically secured to the second air hardenable steel alloy part to form a metallurgically secured assembly, and the metallurgically secured assembly is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface.
First claim
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We claim: 1. A dual hardness steel article, comprising: a pre-formed first air hardenable steel alloy part having a first alloy hardness; a pre-formed second air hardenable steel alloy part having a second alloy hardness, wherein the first alloy hardness is greater than the second alloy hardness, and wherein at least one of the first air hardenable steel alloy part and the second air hardenable steel alloy part comprises a nickel-molybdenum-chromium steel alloy; and a metallur…
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- What does patent US9182196B2 cover?
- A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air har…
- Who is the assignee on this patent?
- Stefansson Njall, Bailey Ronald E, Swiatek Glenn J, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C21D9/42. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 10 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).