Austenitic light-weight high-strength steel with excellent properties of welds, and method of manufacturing the same
US-2016153077-A1 · Jun 2, 2016 · US
High manganese steel
US10329650B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10329650-B2 |
| Application number | US-201615376466-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 12, 2016 |
| Priority date | Oct 12, 2016 |
| Publication date | Jun 25, 2019 |
| Grant date | Jun 25, 2019 |
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Abstract
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Disclosed herein is a high manganese steel including: 0.5 to 1.2 wt % of carbon (C), 0.1 to 2.3 wt % of silicon (Si), 15 to 30 wt % of manganese (Mn), 7.0 to 13.0 wt % of aluminum (Al), 0.01 to 3.0 wt % of nickel (Ni), 0.01 to 0.5 wt % of chromium (Cr), 0.01 to 0.4 wt % of molybdenum (Mo), 0.01 to 0.5 wt % of vanadium (V), 0.005 to 0.3 wt % of niobium (Nb), 0.005 to 0.3 wt % of titanium (Ti), and remainder iron (Fe) and other inevitable impurities.
First claim
Opening claim text (preview).
What is claimed is: 1. A high manganese steel comprising: 0.5 to 1.2 wt % of carbon (C), 0.1 to 2.3 wt % of silicon (Si), 15 to 30 wt % of manganese (Mn), 10.5 to 13.0 wt % of aluminum (Al), 0.01 to 3.0 wt % of nickel (Ni), 0.01 to 0.5 wt % of chromium (Cr), 0.01 to 0.4 wt % of molybdenum (Mo), 0.01 to 0.5 wt % of vanadium (V), 0.005 to 0.3 wt % of niobium (Nb), 0.005 to 0.3 wt % of titanium (Ti), and remainder iron (Fe) and other inevitable impurities, wherein a β-manganese phase is formed in the high manganese steel, and wherein the high manganese steel has a density of 7.0 (g/cm 3 ) or less, an elongation of 41.6% or more, and a work hardening exponent (n) of 0.226 or more. 2. The high manganese steel of claim 1 , wherein the high manganese steel has a yield strength of 705 MPa or more, and tensile strength of 1120 MPa or more. 3. The high manganese steel of claim 1 , wherein the high manganese steel has a stacking fault energy (SFE) of 35.3 to 44.1 (mJ/m 2 ). 4. The high manganese steel of claim 1 , wherein a fraction of carbide present in the high manganese steel is 1.34% or more. 5. The high manganese steel of claim 1 , wherein a fraction of inclusion present in the high manganese steel is 0.062% or less. 6. A high manganese steel comprising 0.5 to 1.2 wt % of carbon (C), 0.1 to 2.3 wt % of silicon (Si), 15.3 to 30 wt % of manganese (Mn), 10.5 to 13.0 wt % of aluminum (Al), 0.01 to 3.0 wt % of nickel (Ni), 0.01 to 0.5 wt % of chromium (Cr), 0.01 to 0.4 wt % of molybdenum (Mo), 0.01 to 0.5 wt % of vanadium (V), 0.005 to 0.3 wt % of niobium (Nb), 0.005 to 0.3 wt % of titanium (Ti), and remainder iron (Fe) and other inevitable impurities, wherein the high manganese steel has a density of 7.0 (g/cm 3 ) or less, an elongation of 41.6% or more, and a work hardening exponent (n) of 0.226 or more. 7. The high manganese steel of claim 6 , wherein a β-manganese phase is formed in the high manganese steel. 8. The high manganese steel of claim 6 , wherein the high manganese steel has a yield strength of 705 MPa or more, and tensile strength of 1120 MPa or more. 9. The high manganese steel of claim 6 , wherein the high manganese steel has a stacking fault energy (SFE) of 35.3 to 44.1 (mJ/m 2 ). 10. The high manganese steel of claim 6 , wherein a fraction of carbide present in the high manganese steel is 1.34% or more. 11. The high manganese steel of claim 6 , wherein a fraction of inclusion present in the high manganese steel is 0.062% or less. 12. The high manganese steel of claim 6 , wherein the high manganese steel contains 25 to 30 wt % of manganese (Mn). 13. A high manganese steel consisting essentially of 0.5 to 1.2 wt % of carbon (C), 0.1 to 2.3 wt % of silicon (Si), 15.3 to 30.3 of manganese (Mn), 10.5 to 13.0 wt % of aluminum (Al), 0.01 to 3.0 wt % of nickel (Ni), 0.01 to 0.5 wt % of chromium (Cr), 0.01 to 0.4 wt % of molybdenum (Mo), 0.01 to 0.5 wt % of vanadium (V), 0.005 to 0.3 wt % of niobium (Nb), 0.005 to 0.3 wt % of titanium (Ti), and iron (Fe), wherein the high manganese steel has a density of 7.1 (g/cm 3 ) or less, a yield strength of 705 MPa or more, a tensile strength of 1120 MPa or more, an elongation of 41.6% or more, and a work hardening exponent (n) of 0.208 or more, wherein a β-manganese phase is formed in the high manganese steel, and wherein the high manganese steel has a density of 7.0 (g/cm 3 ) or less, and a work hardening exponent (n) of 0.226 or more.
Assignees
Inventors
Classifications
during manufacturing of plates or strips (C21D8/12 takes precedence) · CPC title
Hot rolling · CPC title
containing silicon · CPC title
with titanium or zirconium · CPC title
with molybdenum or tungsten · CPC title
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- What does patent US10329650B2 cover?
- Disclosed herein is a high manganese steel including: 0.5 to 1.2 wt % of carbon (C), 0.1 to 2.3 wt % of silicon (Si), 15 to 30 wt % of manganese (Mn), 7.0 to 13.0 wt % of aluminum (Al), 0.01 to 3.0 wt % of nickel (Ni), 0.01 to 0.5 wt % of chromium (Cr), 0.01 to 0.4 wt % of molybdenum (Mo), 0.01 to 0.5 wt % of vanadium (V), 0.005 to 0.3 wt % of niobium (Nb), 0.005 to 0.3 wt % of titanium (Ti), a…
- Who is the assignee on this patent?
- Hyundai Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C22C38/58. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jun 25 2019 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).