EP0006953A1 - Alliage acier-coule non magnetisable, utilisation et procede de fabrication - Google Patents
Alliage acier-coule non magnetisable, utilisation et procede de fabricationInfo
- Publication number
- EP0006953A1 EP0006953A1 EP78900291A EP78900291A EP0006953A1 EP 0006953 A1 EP0006953 A1 EP 0006953A1 EP 78900291 A EP78900291 A EP 78900291A EP 78900291 A EP78900291 A EP 78900291A EP 0006953 A1 EP0006953 A1 EP 0006953A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- max
- alloys
- alloy
- cast steel
- alloy according
- 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.)
- Withdrawn
Links
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 55
- 239000000956 alloy Substances 0.000 title claims abstract description 55
- 229910001208 Crucible steel Inorganic materials 0.000 title claims description 16
- 230000035699 permeability Effects 0.000 claims abstract description 17
- 230000005291 magnetic effect Effects 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 14
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 14
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 9
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 238000007711 solidification Methods 0.000 claims description 16
- 230000008023 solidification Effects 0.000 claims description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 1
- 230000005672 electromagnetic field Effects 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 229910052717 sulfur Inorganic materials 0.000 claims 1
- 239000011593 sulfur Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 description 22
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 9
- 239000011651 chromium Substances 0.000 description 9
- 239000010959 steel Substances 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000005266 casting Methods 0.000 description 7
- 239000011572 manganese Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910001566 austenite Inorganic materials 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000000137 annealing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910003289 NiMn Inorganic materials 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910001339 C alloy Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910019932 CrNiMo Inorganic materials 0.000 description 1
- 229910001141 Ductile iron Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S376/00—Induced nuclear reactions: processes, systems, and elements
- Y10S376/90—Particular material or material shapes for fission reactors
- Y10S376/904—Moderator, reflector, or coolant materials
- Y10S376/906—Metal
Definitions
- Non-magnetizable cast steel alloy its use and manufacturing process
- the invention relates to a non-magnetizable cast steel alloy, the use thereof and a method for producing the alloy.
- Structural stability at low temperatures down to -196 ° C and temperature changes homogeneous magnetic permeability with large solidification cross sections in the range of 100 - 500 mm also in the residual solidification zone, - machinability and weldability, which is at least as good as for the standardized stainless steel cast alloys stanchions, e.g. Material number. 4308 or 4408 (DIN 17 445), yield strength or 0.2 proof strength of at least 250 N / mm. 2, weldable without micro-cracks.
- high-alloy CrNiMn steel castings can be fully austenitic or, with a corresponding increase in the Cr content or lowering of the Ni and / or Mn content, can also contain more or less large amounts of ferrite in the austenitic basic structure.
- the austenitic phase is non-magnetic with a very low magnetic permeability ( ⁇ i 4- 1.001), while the ferritic phase is ferro-magnetic with correspondingly high permeability values. For this reason, in two-phase austenitic ferritic alloys, the magnetic permeability increases very strongly with the ferrite content (FIG. 5).
- the object of the invention is to avoid the above disadvantages and to fulfill the property package listed above.
- a non-magnetizable and at the same time crack-proof weldable cast steel alloy is to be created.
- the alloy according to the invention can advantageously be used for plant parts in nuclear fusion reactor plants where field strengths H of more than 10 3 Oersted prevail, but is also suitable for uses at temperatures below -150 ° C. It was found that the reason for the remarkably favorable behavior during welding of alloys' in An ⁇ essentially standardized on certain of ferrite in erstarrungsmorpholo ⁇ cal peculiarities of the alloy system FeCrNiMn should be sought. In the alloy range up to 20% Cr, up to 15% Ni and up to 20% Mn, a peritectic melting surface separates the austenitic primary solidification from the ferritic primary solidification. Starting from the partially known three-substance systems FeCrNi and FeCrMn and supported by alloy tests, the following relationship was found for the peritectic melting surface :
- Quaternary FeCrNiMn alloys with a CrNiMn equivalence factor f> 2 solidify primarily austenitic and are therefore fully austenitic at room temperature. Alloys with f ⁇ 2 solidify primarily ferritic. The ferritic solidification is replaced by a binary peritectic reaction if the f values are not too low. If f ⁇ . 0, the solidification of the alloys ends with the peritectic reaction. For alloys with 0. ⁇ F ⁇ T 2 there is an austenitic residual solidification after the ferritic primary solidification and the binary peritectic reaction, which likewise leads to full austenites. The important peritectic reaction causes austenite to be formed by dissolving primarily formed ferrite, in contrast to the primary austenitic or. austenitic residual solidification, where austenite is formed from the melt without the participation of ferrite.
- Stahlgusslegie ⁇ tion succeeds in raising the yield point, compared to conventional pure austenitic chromium-nickel steels, without accepting porosities due to nitrogen excretions, which can occur in the case of strong segregation in large casting cross-sections due to insufficient nitrogen solubility.
- the cast steel alloy according to the invention is preferably used with a carbon content of C 0.06% according to claim 2, to limit the carbide deposits and to avoid embrittlement, in particular during stress relief annealing. Further advantages of the low carbon content are the better machinability and the Protection against intergranular corrosion. The decrease in the yield strength associated with a lower carbon content is compensated for by a correspondingly increased nitrogen content. The crack resistance during welding is significantly increased if an S content is selected according to claim 4.
- the chromium and nickel content in the cast alloy according to the invention depends on the operating temperature of the system parts. At low operating temperatures, high chromium / nickel contents should be selected to ensure austenite stability.
- compositions always being given in percentages by weight.
- the machinability of the steel casting alloy according to the invention is also superior to that of CF 20 or other comparable iron-carbon steel casting alloys.
- CF 20 is also not weldable without micro-cracks.
- FIGS. 1 to 4. 1 shows the graphical comparisons between the alloy A according to the invention (filled circles) and other alloys (filled triangles and quadrilaterals) when turning.
- the cutting speed is V (m / min.) On the abscissa and the tool life on the ordinate T VB 0.4 (min) discontinued.
- Fig. 2 relates to milling.
- the cutting material here is Widia TT 40.
- the board dimension is TNAF 2504 ZZR.
- the feed s z 0.11 mm / tooth and it was not cooled.
- the cutting speed V (m / min.) Is plotted on the abscissa and the tool life L (mm / tooth) is plotted on the ordinate.
- _O PI Fig. 3 refers to the comparisons when drilling.
- the material is CF 20.
- the tool is an HSS twist drill with a diameter of 5 mm.
- the feed s 0.06 mm / rev. It was cooled with an oil emulsion.
- the cutting speed V (m / min.) Is plotted on the abscissa and the tool life L (mm) is plotted on the ordinate.
- FIG. 4 shows the relationship between the CrNiMn equivalence factor f of the alloys according to the invention on the abscissa and the ferrite content (Fer) in% on the ordinate, where
- V “" "” "” represents 650 ° C
- the favorable magnetic permeability of the cast steel alloy according to the invention also remains in components of large cross section in the range from 100 to 500 mm, preferably from 200 - 300 mm, also obtained in the residual solidification zone by a high austenite stability and a large one. Homogeneity of properties is achieved even with a modest amount of alloying. Particularly in the case of extremely strong magnetic fields of, for example, 10 ** Oersted field strength, as are required in fusion reactors for shaping the plasma, the alloy according to the invention has clear advantages over conventional alloys.
- particularly advantageous cast steel alloys have the composition: in% by weight
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Soft Magnetic Materials (AREA)
Abstract
Un alliage acier-coule non magnetisable ayant la composition C max. 0,30%, Si max. 2,00%, Mn 4,00 - 20,00%, Cr 10,00 - 20,00%, Ni 4,00 - 12,00%, Mo max. 3,00%, N2 0,02 - 0,20%, le reste etant du fer, avec une permeabilite magnetique (Alpha) <= 1,20 et un facteur d'equivalence CrNiMn f = 6,5 -% Cr - 0,4.% Ni + 0,1.% Mn + 0,075.% Cr .% Ni + 0.013.% Cr.% Mn - 0,02.% Ni.% Mn ou - 6 <= f <= + 2 remplit de maniere optimale l'ensemble des proprietes suivantes: basse permeabilite; resistance et durete homogenes, flexibilite stable a basse temperature; permeabilite magnetique homogene dans les grandes sections solidifiees; bonne aptitude a former des copeaux et bonne soudabilite sans microfissure et une limite a l'allongement suffisante. D'autres objets de l'invention portent sur l'utilisation de ces alliages en presence de champs magnetiques intenses et sur un procede selon lequel, apres soudure, l'alliage est traite thermiquement.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH14647/77 | 1977-11-30 | ||
| CH1464777 | 1977-11-30 | ||
| CH726/78 | 1978-01-24 | ||
| CH72678 | 1978-01-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0006953A4 EP0006953A4 (fr) | 1980-01-09 |
| EP0006953A1 true EP0006953A1 (fr) | 1980-01-23 |
Family
ID=25685492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP78900291A Withdrawn EP0006953A1 (fr) | 1977-11-30 | 1979-06-21 | Alliage acier-coule non magnetisable, utilisation et procede de fabrication |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4285725A (fr) |
| EP (1) | EP0006953A1 (fr) |
| IT (1) | IT1108126B (fr) |
| WO (1) | WO1979000328A1 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10130089A1 (de) * | 2001-06-21 | 2003-01-02 | Tenovis Gmbh & Co Kg | Telekommunikationsanlage und Betriebsverfahren einer solchen mit Nachrichtenein-/-ausgabe über ein angeschlossenes Endgerät |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3176034D1 (en) * | 1980-06-17 | 1987-04-30 | Toshiba Kk | A high cavitation erosion resistance stainless steel and hydraulic machines being made of the same |
| US4911884A (en) * | 1989-01-30 | 1990-03-27 | General Electric Company | High strength non-magnetic alloy |
| SE506550C2 (sv) * | 1994-11-02 | 1998-01-12 | Sandvik Ab | Användning av ett omagnetiskt, rostfritt stål vid supraledande lågtemperaturapplikationer |
| AU2012362827B2 (en) | 2011-12-30 | 2016-12-22 | Scoperta, Inc. | Coating compositions |
| US9419504B2 (en) | 2012-04-20 | 2016-08-16 | Louis J. Finkle | Hybrid induction motor with self aligning permanent magnet inner rotor |
| US9484794B2 (en) | 2012-04-20 | 2016-11-01 | Louis J. Finkle | Hybrid induction motor with self aligning permanent magnet inner rotor |
| US9738959B2 (en) * | 2012-10-11 | 2017-08-22 | Scoperta, Inc. | Non-magnetic metal alloy compositions and applications |
| US10476363B2 (en) | 2014-01-09 | 2019-11-12 | Louis J. Finkle | Hybrid electric motor with self aligning permanent magnet and squirrel cage dual rotors magnetically coupled with permeant magnets and bars at synchronous speed |
| US9923440B2 (en) | 2014-01-09 | 2018-03-20 | Motor Generator Technology, Inc. | Hybrid electric motor with self aligning permanent magnet and squirrel cage rotors |
| US9923439B2 (en) | 2014-01-09 | 2018-03-20 | Motor Generator Technology, Inc. | Hybrid electric motor with self aligning permanent magnet and squirrel cage rotors |
| US10998802B2 (en) | 2017-02-21 | 2021-05-04 | Louis J. Finkle | Hybrid induction motor with self aligning hybrid induction/permanent magnet rotor |
| US10105796B2 (en) | 2015-09-04 | 2018-10-23 | Scoperta, Inc. | Chromium free and low-chromium wear resistant alloys |
| CA3117043A1 (fr) | 2018-10-26 | 2020-04-30 | Oerlikon Metco (Us) Inc. | Alliages a base de nickel resistants a la corrosion et a l'usure |
| CN111020373B (zh) * | 2019-11-12 | 2021-06-01 | 江阴康瑞成型技术科技有限公司 | 长疲劳寿命耐腐蚀304m2辐条用不锈钢丝及其制造工艺 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1408269A1 (de) * | 1958-07-09 | 1968-10-24 | Linde Ag | Verfahren und Einrichtung zur Erzeugung und Sicherstellung derselben Zaehigkeitseigenschaften in den benachbarten Zonen eines metallischen Werkstuecks,vorzugsweise Stahls |
| US2955034A (en) * | 1958-12-12 | 1960-10-04 | Union Carbide Corp | Austenitic alloy steel |
| AT214466B (de) * | 1959-06-04 | 1961-04-10 | Schoeller Bleckmann Stahlwerke | Stahllegierungen zur Herstellung von Schwerstangen für Tiefbohrgestänge |
| US3081164A (en) * | 1959-11-04 | 1963-03-12 | Westinghouse Electric Corp | Nonmagnetic iron-base alloys |
| US3082083A (en) * | 1960-12-02 | 1963-03-19 | Armco Steel Corp | Alloy of stainless steel and articles |
| SU158918A1 (fr) * | 1961-11-15 | 1963-11-22 | ||
| US3192041A (en) * | 1962-12-13 | 1965-06-29 | Crane Co | Corrosion resistant steels |
| DE1194587B (de) * | 1963-06-06 | 1965-06-10 | Phoenix Rheinrohr Ag | Verwendung von austenitischen Stahllegierungen als Werkstoff fuer geschweisste Bauteile, die dem Angriff von Seewasser und/oder Meeres-atmosphaere ausgesetzt sind |
| US3574605A (en) * | 1968-06-24 | 1971-04-13 | Albert M Hall | Weldable,nonmagnetic austenitic manganese steel |
| US3645725A (en) * | 1969-05-02 | 1972-02-29 | Armco Steel Corp | Austenitic steel combining strength and resistance to intergranular corrosion |
| DE1942131A1 (de) * | 1969-08-19 | 1971-03-04 | United States Steel Corp | Metastabiler,austenitischer,rostfreier Stahl |
| US3854938A (en) * | 1971-04-27 | 1974-12-17 | Allegheny Ludlum Ind Inc | Austenitic stainless steel |
| GB1432396A (en) * | 1973-07-09 | 1976-04-14 | Armco Steel Corp | Chromium-nickel-manganese-nitrogen austenitic stainless steel |
-
1978
- 1978-05-19 IT IT68152/78A patent/IT1108126B/it active
- 1978-11-24 WO PCT/CH1978/000040 patent/WO1979000328A1/fr unknown
-
1979
- 1979-06-21 EP EP78900291A patent/EP0006953A1/fr not_active Withdrawn
- 1979-07-23 US US06/118,805 patent/US4285725A/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| None * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10130089A1 (de) * | 2001-06-21 | 2003-01-02 | Tenovis Gmbh & Co Kg | Telekommunikationsanlage und Betriebsverfahren einer solchen mit Nachrichtenein-/-ausgabe über ein angeschlossenes Endgerät |
Also Published As
| Publication number | Publication date |
|---|---|
| US4285725A (en) | 1981-08-25 |
| WO1979000328A1 (fr) | 1979-06-14 |
| IT7868152A0 (it) | 1978-05-19 |
| EP0006953A4 (fr) | 1980-01-09 |
| IT1108126B (it) | 1985-12-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Designated state(s): CH DE FR GB SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 110E | Request filed for conversion into a national patent application [according to art. 135 epc] | ||
| 18D | Application deemed to be withdrawn | ||
| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: GYSEL, WALTER Inventor name: TRAUTWEIN, ADOLF |