EP0629714B1 - Acier inoxydable martensitique à usinabilité améliorée - Google Patents
Acier inoxydable martensitique à usinabilité améliorée Download PDFInfo
- Publication number
- EP0629714B1 EP0629714B1 EP94401246A EP94401246A EP0629714B1 EP 0629714 B1 EP0629714 B1 EP 0629714B1 EP 94401246 A EP94401246 A EP 94401246A EP 94401246 A EP94401246 A EP 94401246A EP 0629714 B1 EP0629714 B1 EP 0629714B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- steels
- martensitic
- proportion
- equal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 229910001105 martensitic stainless steel Inorganic materials 0.000 title claims abstract 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 99
- 239000010959 steel Substances 0.000 claims abstract description 99
- 229910000734 martensite Inorganic materials 0.000 claims abstract description 38
- 239000000203 mixture Substances 0.000 claims abstract description 32
- 239000011575 calcium Substances 0.000 claims abstract description 25
- 239000011651 chromium Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 13
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 11
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000011572 manganese Substances 0.000 claims abstract description 10
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 3
- 239000005864 Sulphur Substances 0.000 claims abstract 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 41
- 229910052759 nickel Inorganic materials 0.000 claims description 19
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- 229910052758 niobium Inorganic materials 0.000 claims description 12
- 239000010955 niobium Substances 0.000 claims description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 11
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 9
- 239000010941 cobalt Substances 0.000 claims description 9
- 229910017052 cobalt Inorganic materials 0.000 claims description 9
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 9
- 229910052720 vanadium Inorganic materials 0.000 claims description 9
- 229910052726 zirconium Inorganic materials 0.000 claims description 9
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011733 molybdenum Substances 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- 229910052715 tantalum Inorganic materials 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052661 anorthite Inorganic materials 0.000 claims description 4
- GWWPLLOVYSCJIO-UHFFFAOYSA-N dialuminum;calcium;disilicate Chemical compound [Al+3].[Al+3].[Ca+2].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] GWWPLLOVYSCJIO-UHFFFAOYSA-N 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 235000012215 calcium aluminium silicate Nutrition 0.000 claims 1
- 239000000404 calcium aluminium silicate Substances 0.000 claims 1
- 229910001678 gehlenite Inorganic materials 0.000 claims 1
- 239000012535 impurity Substances 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000010791 quenching Methods 0.000 abstract description 13
- 230000000171 quenching effect Effects 0.000 abstract description 13
- 238000003754 machining Methods 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 12
- 238000005260 corrosion Methods 0.000 description 12
- 229910052717 sulfur Inorganic materials 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 239000011593 sulfur Substances 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 238000011282 treatment Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000005496 tempering Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 244000089742 Citrus aurantifolia Species 0.000 description 2
- -1 MnS-TeS Inorganic materials 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- 239000011669 selenium Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 150000004763 sulfides Chemical class 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910052882 wollastonite Inorganic materials 0.000 description 2
- 239000010456 wollastonite Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000915 Free machining steel Inorganic materials 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000005194 fractionation Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- VCTOKJRTAUILIH-UHFFFAOYSA-N manganese(2+);sulfide Chemical class [S-2].[Mn+2] VCTOKJRTAUILIH-UHFFFAOYSA-N 0.000 description 1
- 238000011089 mechanical engineering Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Images
Classifications
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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
-
- 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
- C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur
-
- 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
Definitions
- the present invention relates to a steel stainless steel of the martensitic type with improved machinability.
- Martensite steels generally include 12 to 18% chromium and carbon contents which can go up to about 1%.
- Many alloying elements, such as Ni, Mo, Si, Ti, V, Nb ... allow a wide range properties and lead to applications too varied as: mechanical engineering, tools, cutlery, hot oxides ...
- the structure of the final product and its mechanical characteristics depend largely heat treatments.
- the three common treatments are quenching, tempering and softening annealing.
- the purpose of hardening is to give the steel a martensitic structure and very high hardness.
- the income increases the ductility which is very weak after quenching and softening annealing allows to obtain a metal which can undergo sophisticated implementation operations, such as certain modes of machining or forming.
- Martensitic stainless steels are difficult to machine. Several reasons explain this state of affairs.
- Tool wear therefore has origins different for martensitic steels (hardness high, high friction) than for steels austenitics (hardenability, poor conductivity thermal bad chip fractionation).
- selenium serves to complement the sulfur, it tends to globulate sulphides and improves this makes the mechanical characteristics in the cross direction. In addition to the cost, this element is highly toxic.
- tellurium also makes it possible to globulate the sulphides, and therefore tends to reduce the anisotropy of the steel, in particular the anisotropy of its mechanical properties. It also improves, in itself, the machinability but has the drawback of reducing the ability to be processed hot. For this reason, its use is limited.
- FR-A-2456785 describes a free-cutting steel containing inclusions of type A and B, inclusions A consist of an element from the group: Pb, Bi, MnS-TeS, SiO 2 -K 2 O, SiO 2 -K 2 O, SiO 2 -Na 2 O, SiO 2 -K 2 O-Al 2 O 3 , SiO 2 -Na 2 O and SiO 2 -Na 2 O- CaO-MnO and inclusions B consist of an element of the group: MnS , MnSe and Mn (S, Se).
- the austenitic steels do not require treatment significant thermal likely to change the state physicochemical of steel and inclusions.
- Martensitic steels are hardenable and have the characteristics of being of high hardness. Of this fact, the problem of the difficulty of the machining is not not fully resolved.
- the invention aims to reduce the difficulties encountered in machining steels martensitic, while retaining their properties of hot and cold deformability or forgeability, their mechanical characteristics and their peculiarities heat treatments.
- Martensitic steels have compositions and above all a completely different structure, compared to steels, for example austenitic.
- the behavior of martensitic steels during machining are related to specific issues.
- a change in the composition of steels martensitics does not safely keep their properties or even more to improve them.
- Martensitic steels are hardenable and have the characteristics of being of high hardness.
- martensitic steel is characterized by its weight composition as defined in claim 1.
- the gain in machinability is not done, in any case, to the detriment of characteristics such as forgeability or hot or cold deformability.
- the introduction of oxides malleable is done without taking into account the carbon content added with nitrogen whose decrease, tends as it is proven, to reduce mechanical characteristics.
- the invention also relates to a steel martensitic to which it was added, in its weight composition of 2 to 6% nickel and 1 to 5% copper or even less than 3% molybdenum.
- Nickel is needed in steels containing more than 16% chromium to obtain, after quenching, a martensitic structure.
- nickel in addition to its role previously mentioned (reduction in the quantity of delta ferrite), will form with copper the "NI 3 Cu” phase which will harden the metal. Curing is not obtained here only by carbon, which, moreover, is relatively low.
- Copper allows in combination with metal to obtain a structural hardening and therefore to increase mechanical characteristics.
- Molybdenum improves resistance to corrosion and has a beneficial effect on hardness after income and it also improves resilience.
- steel A contains, as residual, less than 0.5% nickel and less than 0.2% copper.
- This steel was compared to two reference steels, the compositions of which are as follows: VS Yes Mn Or Ref. 1 0.184 0.359 0.530 0.180 Ref. 2 0.194 0.364 0.731 0.313 Cr Mo Cu S P NOT 12.63 0.135 0.084 0.022 0.018 0.056 12.77 0.093 0.088 0.002 0.017 0.049
- Filming is carried out with inserts solid carbide, test designated by Vb 30 / 0.3, which is to determine the speed at which wear clearance is 0.3mm after 30 minutes of machining and also, with coated carbide inserts, test designated by Vb 15 / 0.15 which consists in determining the speed for which the wear and tear is 0.15 mm after 15 minutes of machining.
- a martensitic steel according to the invention and the only weight composition of which is as follows: VS Yes Mn Cr Mo STEEL B 0.196 0.444 0.555 12.10 0.073 S P NOT It O Ca / O SteelB 0.0263 0.019 0.053 41.10 -4 99.10 -4 0.41
- steel B contains, as residual, less than 0.5% nickel and less than 0.2% copper.
- This steel was compared to a standard reference steel which does not contain malleable oxides in its composition and whose composition is as follows: VS Yes Mn Or Cr Mo REF 3 0.214 0.344 0.564 0.354 12.32 0.097 Cu S P NOT It O Ca / O REF 3 0.106 0.261 0.017 0.054 45.10 -4
- Table 3 below presents characteristic values of the machining tests and shows that the steels treated according to the invention give a machinability gain of 25 to 30%.
- METALLURGICAL CONDITION TREATY SOFTENED test Vb 30 / 0.3 (m / min) Vb 15 / 0.15 (m / min) Vb 30 / 0.3 (m / min) Vb 15 / 0.15 (m / min) Steel ref 1 195 250 - - Steel ref 2 150 205 - - Steel ref 3 230 250 200 220 Steel A 250 - - - Steel B 250 290 - -
- These reference steels contain in their composition of copper and nickel and are part of structural hardening grades.
- the steel D according to the invention was treated by machining in the quenched state. That is to say that he underwent a soak at 1050 ° C in oil. He appeared, as represented on the curves of figure 2, that the presence of malleable oxides increased machinability well which can be seen on the curves by the decrease tool wear. This wear does indeed pass 0.15 mm after 15 minutes of machining at a speed of 190 m / min, an advance of 0.15 mm / revolution, a depth of cut 1.5 mm for steel reference 4, with wear of 0.125 mm for steel D.
- Steel D according to the invention made it possible to obtain in the softened state a cutting speed of 240 m / min while reference steel 5 allowed a speed of 210 m / min cut.
- the gain recorded is 20%.
- martensitic steels containing oxides in their composition malleable have improved machinability, oxides do not not deteriorating the other characteristics of said steels.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Catalysts (AREA)
- Heat Treatment Of Articles (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Chemical Treatment Of Metals (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SI9430316T SI0629714T1 (en) | 1993-06-14 | 1994-06-06 | Martensitic stainless steel with improved machinability |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9307141 | 1993-06-14 | ||
| FR9307141A FR2706489B1 (fr) | 1993-06-14 | 1993-06-14 | Acier inoxydable martensitique à usinabilité améliorée. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0629714A1 EP0629714A1 (fr) | 1994-12-21 |
| EP0629714B1 true EP0629714B1 (fr) | 2000-04-12 |
Family
ID=9448102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94401246A Expired - Lifetime EP0629714B1 (fr) | 1993-06-14 | 1994-06-06 | Acier inoxydable martensitique à usinabilité améliorée |
Country Status (25)
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2728028A1 (fr) | 2012-11-02 | 2014-05-07 | The Swatch Group Research and Development Ltd. | Alliage d'acier inoxydable sans nickel |
| US10941083B2 (en) * | 2015-07-08 | 2021-03-09 | Safran Aircraft Engines | Part coated with a coating for protection against CMAS |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2720410B1 (fr) * | 1994-05-31 | 1996-06-28 | Ugine Savoie Sa | Acier inoxydable ferritique à usinabilité améliorée. |
| FR2740783B1 (fr) * | 1995-11-03 | 1998-03-06 | Ugine Savoie Sa | Acier inoxydable ferritique utilisable pour la production de laine d'acier |
| JP3284092B2 (ja) * | 1997-12-05 | 2002-05-20 | 理研ダイヤモンド工業株式会社 | 切断破砕用カッター |
| DE69903403T2 (de) * | 1998-01-16 | 2003-06-12 | Crs Holdings, Inc. | Rostfreier martensitischer automatenstahl |
| TW541346B (en) * | 1999-03-08 | 2003-07-11 | Crs Holdings Inc | An enhanced machinability precipitation-hardenable stainless steel for critical applications |
| WO2000070112A1 (fr) * | 1999-05-18 | 2000-11-23 | Sumitomo Metal Industries, Ltd. | Acier inoxydable martensitique pour tube en acier sans soudure |
| FR2805829B1 (fr) * | 2000-03-03 | 2002-07-19 | Ugine Savoie Imphy | Acier inoxydable austenitique a haute usinabilite, resulfure, et comportant une resistance a la corrosion amelioree |
| FR2811683B1 (fr) * | 2000-07-12 | 2002-08-30 | Ugine Savoie Imphy | Acier inoxydable ferritique utilisable pour des pieces ferromagnetiques |
| US6461452B1 (en) * | 2001-05-16 | 2002-10-08 | Crs Holdings, Inc. | Free-machining, martensitic, precipitation-hardenable stainless steel |
| FR2832734B1 (fr) * | 2001-11-26 | 2004-10-08 | Usinor | Acier inoxydable ferritique au soufre, utilisable pour des pieces ferromagnetiques |
| US6890393B2 (en) * | 2003-02-07 | 2005-05-10 | Advanced Steel Technology, Llc | Fine-grained martensitic stainless steel and method thereof |
| FR2885142B1 (fr) * | 2005-04-27 | 2007-07-27 | Aubert & Duval Soc Par Actions | Acier martensitique durci, procede de fabrication d'une piece a partir de cet acier, et piece ainsi obtenue |
| RU2321671C2 (ru) * | 2005-05-18 | 2008-04-10 | Зао "Ижевский Опытно-Механический Завод" | Нержавеющая сталь |
| FR2887558B1 (fr) * | 2005-06-28 | 2007-08-17 | Aubert & Duval Soc Par Actions | Composition d'acier inoxydable martensitique, procede de fabrication d'une piece mecanique a partir de cet acier et piece ainsi obtenue |
| RU2312921C1 (ru) * | 2006-04-05 | 2007-12-20 | Юлия Алексеевна Щепочкина | Сталь |
| RU2355810C1 (ru) * | 2008-02-28 | 2009-05-20 | Юлия Алексеевна Щепочкина | Инструментальная сталь |
| RU2361963C1 (ru) * | 2008-04-17 | 2009-07-20 | Юлия Алексеевна Щепочкина | Штамповая сталь |
| FR2933990B1 (fr) * | 2008-07-15 | 2010-08-13 | Aubert & Duval Sa | Acier martensitique durci a teneur faible en cobalt, procede de fabrication d'une piece a partir de cet acier, et piece ainsi obtenue |
| RU2413029C2 (ru) * | 2008-11-17 | 2011-02-27 | Федеральное Государственное Унитарное Предприятие "Центральный Научно-Исследовательский Институт Конструкционных Материалов "Прометей" (Фгуп "Цнии Км "Прометей") | Мартенситная азотсодержащая коррозионно-стойкая сталь |
| RU2369657C1 (ru) * | 2008-11-18 | 2009-10-10 | Закрытое акционерное общество Производственно Коммерческая Фирма "Проммет-сплав" (ЗАО ПКФ "Проммет-сплав") | Коррозионно-стойкая сталь мартенситного класса и изделие, выполненное из нее |
| RU2393264C1 (ru) * | 2009-03-13 | 2010-06-27 | Юлия Алексеевна Щепочкина | Сталь |
| DE102009030489A1 (de) * | 2009-06-24 | 2010-12-30 | Thyssenkrupp Nirosta Gmbh | Verfahren zum Herstellen eines warmpressgehärteten Bauteils, Verwendung eines Stahlprodukts für die Herstellung eines warmpressgehärteten Bauteils und warmpressgehärtetes Bauteil |
| UA111115C2 (uk) | 2012-04-02 | 2016-03-25 | Ейкей Стіл Пропертіс, Інк. | Рентабельна феритна нержавіюча сталь |
| RU2507297C1 (ru) * | 2012-10-05 | 2014-02-20 | Леонид Михайлович Клейнер | Стали со структурой пакетного мартенсита |
| CN102943211B (zh) * | 2012-11-27 | 2015-12-23 | 黄山市新光不锈钢材料制品有限公司 | 一种高碳马氏体不锈钢带的制造方法 |
| CN102965580B (zh) * | 2012-11-27 | 2016-01-20 | 黄山市新光不锈钢材料制品有限公司 | 一种高碳马氏体不锈钢 |
| US9556503B1 (en) | 2013-04-23 | 2017-01-31 | U.S. Department Of Energy | Creep resistant high temperature martensitic steel |
| US9181597B1 (en) | 2013-04-23 | 2015-11-10 | U.S. Department Of Energy | Creep resistant high temperature martensitic steel |
| CN103725994B (zh) * | 2013-12-16 | 2016-06-08 | 泰州俊宇不锈钢材料有限公司 | 一种高性能马氏体钢丝及其制造方法 |
| RU2557850C1 (ru) * | 2014-10-21 | 2015-07-27 | Юлия Алексеевна Щепочкина | Сталь |
| RU2572911C1 (ru) * | 2014-11-05 | 2016-01-20 | Юлия Алексеевна Щепочкина | Сталь |
| DE102016219350A1 (de) | 2016-10-06 | 2018-04-12 | Kjellberg-Stiftung | Düsenschutzkappe, Lichtbogenplasmabrenner mit dieser Düsenschutzkappe sowie eine Verwendung des Lichtbogenplasmabrenners |
| RU2650945C1 (ru) * | 2017-12-19 | 2018-04-18 | Юлия Алексеевна Щепочкина | Сталь |
| RU2672165C1 (ru) * | 2018-07-20 | 2018-11-12 | Юлия Алексеевна Щепочкина | Сталь |
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| JPS55122858A (en) * | 1979-03-13 | 1980-09-20 | Daido Steel Co Ltd | High carbon high manganese steel with high machinability |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3690869A (en) * | 1970-08-26 | 1972-09-12 | Yakov Mikhailovich Potak | Martensite stainless steel |
| DE2951812A1 (de) * | 1978-12-25 | 1980-07-10 | Daido Steel Co Ltd | Automatenstahl |
| US4434006A (en) * | 1979-05-17 | 1984-02-28 | Daido Tokushuko Kabushiki Kaisha | Free cutting steel containing controlled inclusions and the method of making the same |
| JPS5970748A (ja) * | 1982-10-12 | 1984-04-21 | Kawasaki Steel Corp | オ−トバイデイスクブレ−キ用のじん性に優れる低炭素マルテンサイト系ステンレス鋼熱延板材 |
| JPH0215143A (ja) * | 1988-06-30 | 1990-01-18 | Aichi Steel Works Ltd | 冷間鍛造用軟磁性ステンレス鋼 |
| FR2648477B1 (fr) * | 1989-06-16 | 1993-04-30 | Ugine Savoie Sa | Acier inoxydable austenitique resulfure a usinabilite amelioree |
| JPH02104633A (ja) * | 1989-07-28 | 1990-04-17 | Daido Steel Co Ltd | 高強度非磁性高マンガン鋼 |
| FR2690169B1 (fr) * | 1992-04-17 | 1994-09-23 | Ugine Savoie Sa | Acier inoxydable austénitique à haute usinabilité et à déformation à froid améliorée. |
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- 1993-06-14 FR FR9307141A patent/FR2706489B1/fr not_active Expired - Lifetime
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1994
- 1994-06-06 DE DE69423930T patent/DE69423930T2/de not_active Expired - Lifetime
- 1994-06-06 SG SG1996007240A patent/SG48134A1/en unknown
- 1994-06-06 EP EP94401246A patent/EP0629714B1/fr not_active Expired - Lifetime
- 1994-06-06 PT PT94401246T patent/PT629714E/pt unknown
- 1994-06-06 SI SI9430316T patent/SI0629714T1/xx unknown
- 1994-06-06 DK DK94401246T patent/DK0629714T3/da active
- 1994-06-06 AT AT94401246T patent/ATE191753T1/de not_active IP Right Cessation
- 1994-06-06 ES ES94401246T patent/ES2145109T3/es not_active Expired - Lifetime
- 1994-06-07 IL IL109919A patent/IL109919A/en not_active IP Right Cessation
- 1994-06-09 CZ CZ19941419A patent/CZ292392B6/cs not_active IP Right Cessation
- 1994-06-10 RU RU94020719/02A patent/RU2080410C1/ru not_active IP Right Cessation
- 1994-06-10 NO NO942168A patent/NO303180B1/no not_active IP Right Cessation
- 1994-06-13 CA CA002125732A patent/CA2125732C/fr not_active Expired - Lifetime
- 1994-06-13 TR TR00563/94A patent/TR28472A/xx unknown
- 1994-06-13 FI FI942801A patent/FI106267B/fi not_active IP Right Cessation
- 1994-06-13 EG EG34994A patent/EG20378A/xx active
- 1994-06-13 RO RO94-01014A patent/RO115276B1/ro unknown
- 1994-06-13 US US08/258,926 patent/US5427635A/en not_active Expired - Lifetime
- 1994-06-14 KR KR1019940013329A patent/KR100338886B1/ko not_active Expired - Lifetime
- 1994-06-14 PL PL94303831A patent/PL179128B1/pl unknown
- 1994-06-14 UA UA94005260A patent/UA26151C2/uk unknown
- 1994-06-14 JP JP15517194A patent/JP3398772B2/ja not_active Ceased
- 1994-07-16 TW TW083106562A patent/TW304985B/zh not_active IP Right Cessation
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2000
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| JPS55122858A (en) * | 1979-03-13 | 1980-09-20 | Daido Steel Co Ltd | High carbon high manganese steel with high machinability |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2728028A1 (fr) | 2012-11-02 | 2014-05-07 | The Swatch Group Research and Development Ltd. | Alliage d'acier inoxydable sans nickel |
| US10941083B2 (en) * | 2015-07-08 | 2021-03-09 | Safran Aircraft Engines | Part coated with a coating for protection against CMAS |
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