CN106636851A - High-chrome austenitic stainless steel - Google Patents
High-chrome austenitic stainless steel Download PDFInfo
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- CN106636851A CN106636851A CN201611220951.5A CN201611220951A CN106636851A CN 106636851 A CN106636851 A CN 106636851A CN 201611220951 A CN201611220951 A CN 201611220951A CN 106636851 A CN106636851 A CN 106636851A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
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Abstract
The invention discloses high-chrome austenitic stainless steel and belongs to the technical field of stainless steel. The stainless steel comprises the following ingredients in percentage by weight: less than or equal to 0.035 of C, less than or equal to 1.0 of Si, more than or equal to 3.0 and less than or equal to 6.5 of Mn, less than or equal to 0.035 of P, less than or equal to 0.030 of S, more than or equal to 28.0 and less than or equal to 31.5 of Cr, more than or equal to 18.0 and less than or equal to 25.0 of of Ni, more than or equal to 3.0 and less than or equal to 6.0 of Mo, more than or equal to 0.01 and less than or equal to 3.0 of Cu, more than or equal to 0.60 and less than or equal to 0.90 of N, and the balance of Fe. The alloy also comprises other residual elements and elements for improving the hot working property, like O, Ca, Ti, Nb, B, La, Ce, Al, Zr, V and Mg. Furthermore, the pitting corrosion resistant index [PREN=[Cr(wt.%)+3.3*Mo(wt.%)+30*N(wt.%)] is not less than 68, and the content of Cu is further controlled to be 1.2-3.0. The high-chrome austenitic stainless steel has a high hot working property, a high mechanical property, local corrosion resistance and uniform corrosion resistance.
Description
Technical field
The invention belongs to stainless steel technical field, more particularly to a kind of high-chromium austenite stainless steel, excellent performance.
Background technology
Austenitic stainless steel is wide due to good mechanical property, decay resistance and cold and hot working performance, having obtained
General application.The demand of resistance to harsh dielectric corrosion, above carries in the stainless steel bases such as 304,316 in order to adapt to development of modern industry
The molybdenum content of Gao Gangzhong, has developed high-performance austenitic stainless steel, such as the 317LM containing 4.5%Mo and 904L, containing 6%Mo
Al-6X, subsequently occur in that the high-performance austenitic stainless steel containing 8Mo.Due to molybdenum content height, existing high-performance austenite
Stainless thermal structure stability is not good enough, because segregation contains low melting point phase in strand, easily analyses in hot-working and welding process
Go out intermetallic phase, cause its hot-working character and welding performance to reduce.Subsequently, developed nitrogenous 6Mo (such as 254SMO and
AL-6XN) and 7Mo (such as 654SMO) super austenitic stainless steel, although its ingotism and hot-working separate out tendency and relatively do not contain
The 8Mo high-performance austenitic stainless steels of nitrogen have mitigated, but can't completely avoid the problems referred to above.And Mo is a kind of to hold high very much
Expensive element, causes cost of alloy to raise, and limit above-mentioned high-performance austenitic stainless steel and super austenitic stainless steel should
With.
The content of the invention
It is an object of the invention to provide a kind of high-chromium austenite stainless steel, it is to avoid existing high-performance austenite stainless
Steel mutually causes the low problem of materials hot working performance with super austenitic stainless steel due to forming low melting point second, while improving
The mechanical property and decay resistance of material.
The component weight percentages of high-performance austenitic stainless steel of the present invention are：C≤0.035, Si≤1.0,3.0≤Mn
≤ 6.5, P≤0.035, S≤0.030,28.0≤Cr≤31.5,18.0≤Ni≤25.0,3.0≤Mo≤6.0,0.01≤Cu≤
3.0,0.60≤N≤0.90, balance of Fe.
Also containing other residual elements and the element for improving hot-working character in alloy, such as O, Ca, Ti, Nb, B, La, Ce,
Al, Zr, V, Mg etc..
On the basis of above-mentioned technical proposal, the present invention can also do following improvement：
Further, the stainless alloying element of above-mentioned high-chromium austenite is controlled so that the index of resistance to spot corrosion [Pitting
Resistance Equivalent Number, PREN=Cr (wt.%)+3.3 × Mo (wt.%)+30 × N (wt.%)] it is not little
In 68.
Further, the stainless Cu alloying elements of above-mentioned high-chromium austenite are controlled, its content is between 1.2～3.0.
The invention has the beneficial effects as follows：By the content for improving alloying elements cr, the content of Alloy Elements Mo is limited, suppressed
Low melting point is formed in the austenite column crystal crystal boundary of ingot casting so that above-mentioned high-chromium austenite stainless steel has good hot additivity
Energy；By adding appropriate alloying element Mn, the high nitrogen-containing more than 0.6 is obtained so that above-mentioned high-chromium austenite stainless steel tool
There is higher mechanical property；By the content for improving Cr, N element, the PREN values not less than 68 are obtained, play Cr, Mo, N etc. and close
The synergy of gold element so that above-mentioned high-performance austenitic stainless steel has excellent resistance to local corrosion performance；By addition
Appropriate Cu alloying elements so that above-mentioned high-performance austenitic stainless steel has excellent general corrosion resistance performance.
1)C≤0.035
C is the strong element for forming simultaneously stable austenite in austenitic stainless steel, is remarkably improved by solution strengthening
The intensity of austenitic stainless steel.But because C can form the Cr of high Cr with the Cr in steel in austenitic stainless steel23C6Type is carbonized
Thing, so as to cause the lean Cr in local, the decay resistance for making steel is particularly intergranular corrosion resistance performance decline.Therefore in order to prevent intergranular
Corrosive nature is reduced, and the content of C element should be not more than 0.035.
2)Si≤1.0
Si elements add in conventional chromiumnickel austenite stainless steel generally as deoxidant element.Si elements can promote in steel
Ferrite and intermetallic phase (such as σ phases) are formed, so as to affect the performance of steel.Therefore the Si control of element in steel is being not more than
1.0 are advisable.
3)3.0≤Mn≤6.5
Mn is to improve the one of the chief elements of the nitrogen solid solubility in steel, therefore in order to obtain high nitrogen content, should add one
Quantitative Mn；Meanwhile, Mn and S combine to form MnS, improve the hot-working character of steel；But too high Mn can be to the corrosion resistance of steel
Can cause damage.Therefore the Mn control of element in steel is advisable 3.0～6.5.
4) P≤0.035, S≤0.030
Solubility of the impurity elements such as P, S in austenite is low, as the carrying out of solidification is progressively enriched with molten steel, finally
Segregation reduces the adhesion of austenitic stainless steel crystal boundary in austenite column crystal crystal boundary, easily ftractures in hot procedure, drops
The hot-working character of low ingot casting.What therefore P, S content in austenitic stainless steel should be as far as possible is low, P, S element difference in steel
Control is advisable in no more than 0.035 and 0.030.
5)28.0≤Cr≤31.5
Cr is the essential element for improving stainless steel corrosion resistance, therefore in order to improve corrosion resistance, the raising Cr that should try one's best contains
Amount；Meanwhile, in high Mo austenitic stainless steels, higher Cr contents can reduce solidifying segregation, suppress the shape of the phase of low melting point second
Into the hot-working character of raising ingot casting；But Cr is to form and stablize ferritic element, mistake strongly in austenitic stainless steel
High Cr contents can form excessive ferrite, cause hot-working character to deteriorate.Therefore the Cr contents control in steel 28.0～
It is advisable between 31.5.
6)18.0≤Ni≤25.0
Ni is the essential element of strong formation and stable austenite in austenitic stainless steel, while can also improve steel also
General corrosion resistance performance in originality corrosive medium；But because metallic nickel is expensive, add membership great in a large number in stainless steel
Improve the cost of raw material.Therefore Ni contents control is advisable between 18.0～25.0.
7)3.0≤Mo≤6.0
Mo elements improve 3.3 times that the ability of stainless steel decay resistance is Cr elements, and the presence of Mo elements is greatly carried
The stainless various corrosion resisting properties of high austenite；But Mo too high levels easily generate low melting point phase in solidification, reduce steel
Hot-working character；Simultaneously metal molybdenum is expensive, and a large amount of plus membership in stainless steel greatly improves the cost of raw material.Therefore
The control of Mo constituent contents is advisable between 3.0～6.0.
8)0.60≤N≤0.90
N element is the useful alloy element of austenitic stainless steel.The addition of appropriate nitrogen, is significantly reducing the modeling of material
The intensity of austenitic stainless steel can be greatly improved in the case of property and toughness, while nitrogen can also strongly improve austenite stainless
The decay resistance of steel, its beneficial effect is 30 times of Cr.But too high nitrogen content reduces the impact flexibility of steel.Therefore nitrogen contains
Amount control is advisable 0.60～0.90.
9)0.01≤Cu≤3.00
Cu is austenite former in austenitic stainless steel, and Cu elements can also reduce the processing of austenitic stainless steel
Hardening rate, the strong hot-working character for deteriorating austenitic stainless steel of too high Cu elements.Therefore the Cu constituent contents control in steel
It is advisable 0.01～3.0.Further, in order to obtain good corrosion resistance to sulfuric acid, Cu constituent contents are controlled 1.2～3.0
Between.
10) index of resistance to spot corrosion
The impact of Cr, Mo and N element to the resistance to local corrosion performance of austenitic stainless steel can be with the index of resistance to spot corrosion come table
Levy.The index of resistance to spot corrosion is higher, and austenitic stainless steel has higher resistance to local corrosion performance.Control Cr (wt.%)+3.3 × Mo
(wt.%)+30 × N (wt.%)] >=68, high-chromium austenite stainless steel can obtain good resistance to local corrosion performance.
Description of the drawings
Fig. 1 is the hot-working character curve map of 4# ingot castings (29.6Cr-5.2Mo) and 13# ingot castings (24.3Cr-7.4Mo).
Fig. 2 is the mirco structure figure of 4# ingot castings (29.6Cr-5.2Mo).
Fig. 3 is the mirco structure figure of 13# ingot castings (24.3Cr-7.4Mo).
Fig. 4 is the impact figure of hot-working character of Cr, Mo content to high-chromium austenite stainless steel ingot casting at 1250 DEG C.
Fig. 5 is the shape appearance figure after the hammer cogging of example 1#, 2#.
Fig. 6 is the shape appearance figure after the hammer cogging of comparative example 11#, 13#.
Fig. 7 is impact figure of the nitrogen content to high-chromium austenite stainless steel materials mechanical property.
Fig. 8 is the impact figure of the resistance to local corrosion performance of the exponent pair of resistance to spot corrosion high-chromium austenite stainless steel materials.
Fig. 9 is impact figure of the alloying element cu content to high-chromium austenite stainless steel materials general corrosion resistance performance.
Specific embodiment
The principle and feature of the present invention are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
The 13 stove steel using induction furnace melting, chemical composition is shown in Table 1, and the composition of wherein comparative example 13# meets the super Austria of 7Mo
The requirement of family name body stainless steel 654SMO.Solidified structure and hot-working character sample are sampled on ingot casting, using Gleeble 3800
Heating power processing experiment machine determines the contraction percentage of area of the ingot casting tensile sample in 1100-1300 DEG C of temperature range, uses it to characterize
The hot-working character of material, the contraction percentage of area is higher, and the hot-working character of ingot casting is better.Ingot casting is forged after 1260 DEG C of heating and opened
Base, is then rolled into 12mm heavy-gauge sheetings (if forging crack, steel slab surface defect being removed using machining before hot rolling), hot rolled plate
The water-cooled Jing after 1150 DEG C -1250 DEG C are incubated 30 minutes.The sheet material of mechanical property and decay resistance sample after solution heat treatment
Upper sampling, determines the room-temperature yield strength and -40 DEG C of impact flexibility of sheet material, and for characterizing the mechanical property of material, surrender is strong
Degree and notched bar impact strength are higher, and the mechanical property of sheet material is better；Sheet material is determined in 6%FeCl3Critical Crevice in+1%HCl
Corrosion temperature, for characterizing the resistance to local corrosion performance of material, Critical Crevice Corrosion temperature is higher, the resistance to local corrosion of sheet material
Can be better；Uniform corrosion rate of the sheet material in 80 DEG C of 50% sulfuric acid is determined, for characterizing the general corrosion resistance of material
Can, corrosion rate is lower, and general corrosion resistance performance is better.
The stainless chemical composition of the embodiment high-chromium austenite of table 1
| Heat (batch) number | C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N | Fe | PREN | Remarks |
| 1 | 0.022 | 0.17 | 4.3 | 0.022 | 0.004 | 28.4 | 18.7 | 4.4 | 0.27 | 0.63 | It is remaining | 61.8 | Example |
| 2 | 0.013 | 0.18 | 5.2 | 0.012 | 0.005 | 28.7 | 19.4 | 5.6 | 0.48 | 0.72 | It is remaining | 68.8 | Example |
| 3 | 0.018 | 0.19 | 6.1 | 0.028 | 0.006 | 29.3 | 23.6 | 5.8 | 0.89 | 0.78 | It is remaining | 71.8 | Example |
| 4 | 0.019 | 0.2 | 4.3 | 0.017 | 0.009 | 29.6 | 24.8 | 5.2 | 1.24 | 0.69 | It is remaining | 67.5 | Example |
| 5 | 0.017 | 0.4 | 4.6 | 0.017 | 0.004 | 29.7 | 22.7 | 5.7 | 1.77 | 0.65 | It is remaining | 68.0 | Example |
| 6 | 0.022 | 0.53 | 4.4 | 0.026 | 0.002 | 30.3 | 23.9 | 5.8 | 2.36 | 0.87 | It is remaining | 75.5 | Example |
| 7 | 0.012 | 0.25 | 3.5 | 0.009 | 0.004 | 30.8 | 24.3 | 3.7 | 2.92 | 0.74 | It is remaining | 65.2 | Example |
| 8 | 0.015 | 0.21 | 1.8 | 0.007 | 0.007 | 26.7 | 22.1 | 4.3 | 0.15 | 0.47 | It is remaining | 55.0 | Comparative example |
| 9 | 0.025 | 0.33 | 1.7 | 0.011 | 0.003 | 28.3 | 21.3 | 6.6 | 0.16 | 0.56 | It is remaining | 67.9 | Comparative example |
| 10 | 0.026 | 0.42 | 4.4 | 0.017 | 0.002 | 31.2 | 20.1 | 6.9 | 0.23 | 0.83 | It is remaining | 78.9 | Comparative example |
| 11 | 0.031 | 0.29 | 6.9 | 0.021 | 0.003 | 32.4 | 21.9 | 2.8 | 3.47 | 0.97 | It is remaining | 70.7 | Comparative example |
| 12 | 0.016 | 0.77 | 5.2 | 0.011 | 0.004 | 31.7 | 18.2 | 4.7 | 0.17 | 1.02 | It is remaining | 77.8 | Comparative example |
| 13 | 0.018 | 0.23 | 4.5 | 0.013 | 0.003 | 24.3 | 22.5 | 7.4 | 0.49 | 0.51 | It is remaining | 64.0 | Comparative example |
The stainless solidified structure of the high-chromium austenite of embodiment 1 and hot-working character
Accompanying drawing 1 shows the hot-working character song of 4# ingot castings (29.6Cr-5.2Mo) and 13# ingot castings (24.3Cr-7.4Mo)
Line.In 1100～1250 DEG C of hot processing temperatures are interval, the hot-working character of 4# ingot castings is high compared with 13# ingot castings；The heat of 4# ingot castings adds
Work performance is decreased obviously at 1250 DEG C, and its contraction percentage of area is 8%, far below the 35% of 4# ingot castings.As a result show, too high Mo
Content and too low Cr contents are adversely affected to the high-temperature region hot-working character of high-chromium austenite stainless steel ingot casting.
Accompanying drawing 2 and Fig. 3 respectively illustrate the high power of 4# ingot castings (29.6Cr-5.2Mo) and 13# ingot castings (24.3Cr-7.4Mo)
Tissue.It can be seen that, 13# ingot castings (24.3Cr-7.4Mo) are high due to the low molybdenum of chromium, and its degree of segregation is apparently higher than 4# ingot castings.
Accompanying drawing 4 shows the impact of the contraction percentage of area of Cr, Mo content to ingot casting at 1250 DEG C, it is seen that when Cr contents exist
Between 28.0～31.5, when Mo contents are not more than 6.0, ingot casting has preferable hot-working character.
After hammer cogging, the steel slab surface of example 1#～7# does not have an obvious forging crack defect, and comparative example 8#～
The steel slab surface of 13# occurs in that more serious forging crack defect.Accompanying drawing 5 and Fig. 6 respectively illustrate the casting of example 1#, 2#
Pattern after ingot and the forging of comparative example 11#, 13# ingot casting, it is seen that the ingot casting hot-working character of example is far better compared with comparative example.
The stainless mechanical property of the high-chromium austenite of embodiment 2
Accompanying drawing 7 shows N to the stainless mechanical property of high-chromium austenite, it is seen then that with the rising of nitrogen, high-chromium austenite
Stainless intensity increases.When N content reaches more than 0.6, the yield strength of sheet material can reach more than 600MPa.Contain in N
When amount is higher than more than 0.9, its -40 DEG C notched bar impact strength is less than 27J, is worth without practical engineering application.Control of Nitrogen Content exists
Between 0.60～0.90, high-chromium austenite stainless steel can obtain good mechanical property.
The stainless resistance to local corrosion performance of the high-chromium austenite of embodiment 3
Fig. 8 shows the pass of the stainless Critical Crevice Corrosion temperature of high-chromium austenite and resistance to spot corrosion indices P REN value
System, it is seen that as the increase of the stainless PREN values of high-chromium austenite, critical slit and corrosion resistant body stainless steel are raised, show that its is resistance to
Local corrosion performance is improved.When PREN values be more than 68 when, its Critical Crevice Corrosion temperature reach 60 DEG C and more than, higher than existing
7Mo super austenitic stainless steel 654SMO.
The stainless general corrosion resistance performance of the high-chromium austenite of embodiment 4
Fig. 9 shows uniform corrosion rate and Cu alloying element of the high-chromium austenite stainless steel in 80 DEG C of 50% sulfuric acid
The relation of content, it is seen that as the increase of Cu contents in high-chromium austenite stainless steel, uniform corrosion rate are reduced, shows that its is resistance to
Even corrosive nature is improved.When its Cu content is higher than 1.2, its uniform corrosion rate is less than 0.1mm/, with good resistance to sulfuric acid
Corrosive nature.
A part for all embodiments of the present invention is the foregoing is only, it is all in the present invention not to limit the present invention
Spirit and principle within, any modification, equivalent substitution and improvements made etc., should be included in protection scope of the present invention it
It is interior.
Claims (3)
1. a kind of high-chromium austenite stainless steel, it is characterised in that component weight percentages are：C≤0.035, Si≤1.0,3.0≤
Mn≤6.5, P≤0.035, S≤0.030,28.0≤Cr≤31.5,18.0≤Ni≤25.0,3.0≤Mo≤6.0,0.60≤N
≤ 0.90,0.01≤Cu≤3.0, balance of Fe.
2. high-chromium austenite stainless steel according to claim 1, it is characterised in that the Cr, Mo, N element content meet
The requirement of formula PREN=Cr (wt.%)+3.3Mo (wt.%)+30N (wt.%) >=68, PREN is austenitic stainless steel
Spot corrosion index.
3. high-chromium austenite stainless steel according to claim 1, it is characterised in that, the Cu constituent contents are 1.2～3.0
Between.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115992330A (en) * | 2023-02-17 | 2023-04-21 | 东北大学 | High-nitrogen low-molybdenum super austenitic stainless steel and alloy composition optimal design method thereof |
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|---|---|---|---|---|
| JPS5726151A (en) * | 1980-07-25 | 1982-02-12 | Aichi Steel Works Ltd | Si-n strengthened austenite stainless steel with superior seawater resistance |
| JPH08134593A (en) * | 1994-11-09 | 1996-05-28 | Sumitomo Metal Ind Ltd | High strength austenitic alloy excellent in seawater corrosion resistance and hydrogen sulfide corrosion resistance |
| CN101111623A (en) * | 2004-12-28 | 2008-01-23 | 奥托库姆普联合股份公司 | An austenitic steel and a steel product |
| JP2013117039A (en) * | 2011-12-01 | 2013-06-13 | Japan Steel Works Ltd:The | Stainless steel for polymer electrolyte fuel cell separator and method for producing the same |
| CN103703158A (en) * | 2011-05-26 | 2014-04-02 | 新加坡商·联合管线亚太有限公司 | Austenitic stainless steel |
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2016
- 2016-12-26 CN CN201611220951.5A patent/CN106636851A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5726151A (en) * | 1980-07-25 | 1982-02-12 | Aichi Steel Works Ltd | Si-n strengthened austenite stainless steel with superior seawater resistance |
| JPH08134593A (en) * | 1994-11-09 | 1996-05-28 | Sumitomo Metal Ind Ltd | High strength austenitic alloy excellent in seawater corrosion resistance and hydrogen sulfide corrosion resistance |
| CN101111623A (en) * | 2004-12-28 | 2008-01-23 | 奥托库姆普联合股份公司 | An austenitic steel and a steel product |
| CN103703158A (en) * | 2011-05-26 | 2014-04-02 | 新加坡商·联合管线亚太有限公司 | Austenitic stainless steel |
| JP2013117039A (en) * | 2011-12-01 | 2013-06-13 | Japan Steel Works Ltd:The | Stainless steel for polymer electrolyte fuel cell separator and method for producing the same |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115992330A (en) * | 2023-02-17 | 2023-04-21 | 东北大学 | High-nitrogen low-molybdenum super austenitic stainless steel and alloy composition optimal design method thereof |
| CN115992330B (en) * | 2023-02-17 | 2024-04-19 | 东北大学 | High-nitrogen low-molybdenum super austenitic stainless steel and alloy composition optimal design method thereof |
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