CN1128237C - High-nitrogen steel - Google Patents
High-nitrogen steel Download PDFInfo
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- CN1128237C CN1128237C CN 01113095 CN01113095A CN1128237C CN 1128237 C CN1128237 C CN 1128237C CN 01113095 CN01113095 CN 01113095 CN 01113095 A CN01113095 A CN 01113095A CN 1128237 C CN1128237 C CN 1128237C
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- nitrogen
- weight percent
- alloy
- manganese
- nitrogen steel
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Abstract
The present invention relates to a high-nitrogen steel which contains 2.4 to 2.8 wt % of N, 84.2 to 97.6 wt % of Fe and 0 to 13 wt % of Mn.
Description
Technical field
What the present invention relates to is a kind of steel alloy, and particularly a kind of high nitrogen steel belongs to metal material field.
Background technology
Nitrogen can improve yield strength, tensile strength, corrosion resistance and the wear resisting property of high nitrogen steel (HNS), and along with the increase of nitrogen content, these performances can further improve.Nitrogen can also improve the stability of austenite phase, can only reach 2.1 weight percents but the nitrogen content of ferrous alloy is the highest in the prior art.As " Materials science forum " 315-320 phase in 1999, the 255-258 page or leaf, the CrMnMo21183 type chromium manganese steel nitrogen content that people such as Ch.Andreev produce reaches 2.1 weight percents at most.
Summary of the invention
The objective of the invention is to overcome deficiency of the prior art, a kind of high nitrogen steel is provided.
Technical scheme of the present invention and embodiment are described in detail as follows: the high nitrogen ferrous alloy of the present invention's preparation, contain iron (Fe), nitrogen (N), and manganese (Mn), its proportioning is the nitrogen (N) of 2.4-2.8 weight percent, 84.2-97.6 the iron matrix of weight percent (Fe), and the manganese of 0-13 weight percent (Mn), manganese (Mn) improves the solubleness of nitrogen (N) in alloy, nitrogen (N) content is in the scope of 2.4-2.8 weight percent, to guarantee the high strength and the austenitic stability of alloy, the alloy that contains 2.4-2.8 weight percent supersaturation nitrogen (N) atom utilizes isothermal quenching thermal treatment, can generate the lumpy nanometer material.
Embodiment
Embodiments of the invention are as follows:
1. in medium-frequency induction furnace, feed ammonia and smelt the high nitrogen ferrous alloy that composition is iron (Fe) (97.6 weight percent), nitrogen (N) (2.4 weight percent), this alloy is heated to 600 ℃, cooling fast after the homogenizing, 225 ℃ of isothermals 6 hours, can obtain the nano-structure of 10-150nm grain-size, its microhardness is at 900 (HV
0.05) more than.
2. in medium-frequency induction furnace, feed the high nitrogen ferrous alloy that ammonia smelts composition iron (Fe) (90.9 weight percent), manganese (Mn) (6.5 weight percent), nitrogen (N) (2.6 weight percent), this alloy is heated to 625 ℃, cooling fast after the homogenizing, 235 ℃ of isothermals 5 hours, can obtain the nano-structure of 10-150nm grain-size, its microhardness is at 1000 (HV
0.06) more than.
3. in medium-frequency induction furnace, feed the high nitrogen ferrous alloy that ammonia smelts composition iron (Fe) (84.2 weight percent), manganese (Mn) (13 weight percent), nitrogen (N) (2.8 weight percent), this alloy is heated to 650 ℃, cooling fast after the homogenizing, 215 ℃ of isothermals 4 hours, can obtain the nano-structure of 10-150nm grain-size, its microhardness is at 1100 (HV
0.05) more than.
The present invention has substantive distinguishing features and marked improvement, the present invention utilizes the high nitrogen ferrous alloy of high nitrogen 2.4-2.8 weight percent content, directly by low temperature quenching or low temperature isothermal quenching thermal treatment, obtain block two-phase (α+γ ') or three-phase (α+γ+γ ') nano material, has good mechanical property, and cost is low, and technology is simple, can be used for making various tool, structural parts, driving parts.The high nitrogen ferrous alloy that is obtained has high hardness, high intensity, high wear resisting property, hardness＞900HV
0.05, intensity＞590MPa.
Claims (1)
1, a kind of high nitrogen steel mainly comprises iron (Fe), nitrogen (N) and manganese (Mn), it is characterized in that proportioning is the nitrogen (N) of 2.4-2.8 weight percent, the iron matrix of 84.2-97.6 weight percent (Fe), and the manganese of 0-13 weight percent (Mn).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113095 CN1128237C (en) | 2001-06-07 | 2001-06-07 | High-nitrogen steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01113095 CN1128237C (en) | 2001-06-07 | 2001-06-07 | High-nitrogen steel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1328168A CN1328168A (en) | 2001-12-26 |
| CN1128237C true CN1128237C (en) | 2003-11-19 |
Family
ID=4659838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01113095 Expired - Fee Related CN1128237C (en) | 2001-06-07 | 2001-06-07 | High-nitrogen steel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1128237C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104862577B (en) * | 2014-10-14 | 2017-01-25 | 长春工业大学 | Method for manufacturing high-nitrogen steel by utilization of carbon-containing ferrochrome |
-
2001
- 2001-06-07 CN CN 01113095 patent/CN1128237C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1328168A (en) | 2001-12-26 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |