Hot-dip galvanized steel sheet with excellent surface quality and resistance to low temperature brittle fracture
US-2018363118-A1 · Dec 20, 2018 · US
Hot-dip galvanized steel material having excellent weldability and press workability and manufacturing method therefor
US11753709B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11753709-B2 |
| Application number | US-201716471289-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 21, 2017 |
| Priority date | Dec 22, 2016 |
| Publication date | Sep 12, 2023 |
| Grant date | Sep 12, 2023 |
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Abstract
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Provided are a hot-dipped galvanized steel material and a method for manufacturing the same. The hot-dipped galvanized steel material comprises an iron substrate and a hot-dipped galvanizing layer formed on the iron substrate, wherein the hot-dipped galvanizing layer comprises, by wt %, 0.01 to 0.5% of Al, 0.01 to 1.5% of Mg, 0.05 to 1.5% of Mn, 0.1 to 6% of Fe, and the balance of Zn and inevitable impurities, with a Zn—Fe—Mn based alloy phase present at the interface between the iron substrate and the hot-dipped galvanizing layer, and an area ratio of the Zn—Fe—Mn-based alloy phase to the hot-dipped galvanizing layer ranging from 1 to 60%.
First claim
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The invention claimed is: 1. A hot-dip galvanized steel material comprising: base steel and a hot-dip galvanized layer disposed on the base steel, wherein the hot-dip galvanized layer comprise, by wt %, 0.01 to 0.5% of Al, 0.01 to 1.5% of Mg, 0.05 to 1.5% of Mn, 0.1 to 6% of Fe, and a balance of Zn and inevitable impurities, and a Zn—Fe—Mn based alloy phase is present at an interface between the base steel and the hot-dip galvanized layer, and a ratio of an area of the Zn—Fe—Mn based alloy phase to an area of the hot-dip galvanized layer is 1% to 60%. 2. The hot-dip galvanized steel material of claim 1 , wherein the Zn—Fe—Mn based alloy phase is (Fe,Mn)Zn 7 . 3. The hot-dip galvanized steel material of claim 1 , wherein the base steel comprises P in an amount less than 0.01%. 4. The hot-dip galvanized steel material of claim 1 , wherein the hot-dip galvanized layer further comprises 0.0001 to 1 wt % in total of one or more selected from a group consisting of K, Ca, and Li. 5. The hot-dip galvanized steel material of claim 1 , wherein one-side coating amount of the hot-dip galvanized layer is 10 to 200 g/m 2 .
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- What does patent US11753709B2 cover?
- Provided are a hot-dipped galvanized steel material and a method for manufacturing the same. The hot-dipped galvanized steel material comprises an iron substrate and a hot-dipped galvanizing layer formed on the iron substrate, wherein the hot-dipped galvanizing layer comprises, by wt %, 0.01 to 0.5% of Al, 0.01 to 1.5% of Mg, 0.05 to 1.5% of Mn, 0.1 to 6% of Fe, and the balance of Zn and inevit…
- Who is the assignee on this patent?
- Posco, Posco Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C22C18/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 12 2023 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).