CS257877B1 - Martensitic-austenitic steel with increased resistance to selective corrosion sorts and short failures - Google Patents
Martensitic-austenitic steel with increased resistance to selective corrosion sorts and short failures Download PDFInfo
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- CS257877B1 CS257877B1 CS858347A CS834785A CS257877B1 CS 257877 B1 CS257877 B1 CS 257877B1 CS 858347 A CS858347 A CS 858347A CS 834785 A CS834785 A CS 834785A CS 257877 B1 CS257877 B1 CS 257877B1
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- Prior art keywords
- corrosion
- martensitic
- arsenic
- carbon
- bismuth
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- 238000005260 corrosion Methods 0.000 title claims abstract description 29
- 230000007797 corrosion Effects 0.000 title claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 20
- 239000010959 steel Substances 0.000 title claims abstract description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052785 arsenic Inorganic materials 0.000 claims abstract description 10
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 9
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 9
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 9
- 239000011574 phosphorus Substances 0.000 claims abstract description 9
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 9
- 239000011593 sulfur Substances 0.000 claims abstract description 9
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims abstract description 8
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052711 selenium Inorganic materials 0.000 claims abstract description 8
- 239000011669 selenium Substances 0.000 claims abstract description 8
- 229910052718 tin Inorganic materials 0.000 claims abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 7
- 239000011651 chromium Substances 0.000 claims abstract description 7
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 6
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 5
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052796 boron Inorganic materials 0.000 claims abstract description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 5
- 239000001257 hydrogen Substances 0.000 claims abstract description 5
- 239000011777 magnesium Substances 0.000 claims abstract description 5
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 239000011733 molybdenum Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000005253 cladding Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 235000000396 iron Nutrition 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- CVORJJBFHWXCFW-UHFFFAOYSA-N [P].[Mo]=O Chemical compound [P].[Mo]=O CVORJJBFHWXCFW-UHFFFAOYSA-N 0.000 description 1
- GZWXHPJXQLOTPB-UHFFFAOYSA-N [Si].[Ni].[Cr] Chemical compound [Si].[Ni].[Cr] GZWXHPJXQLOTPB-UHFFFAOYSA-N 0.000 description 1
- -1 chromium carbides Chemical class 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Arc Welding In General (AREA)
Abstract
Martenziticko-austenitická ocel se zvýšenou odolností proti selektivním druhům koroze a křehkému porušení, vhodná též pro zhotovování svarů a návarů obsahuje hmotnostně 0,005 až 0,045 % uhlíku, 12,5 až 17,5 % chrómu, 0,001 až 0,35 % křemíku, 2,00 až 6,50 % niklu, 0,01 až 0,30 % manganu, 0,0005 až 0,015 % fosforu, 0,0005 až 0,015 % síry, 0,0001 až 0,15 % kyslíku, 0,001 až 0,30 % dusíku, 0,4 až 2,0 % molybdenu, 0,0001 až 0,005 % arsenu, 0,0001 až 0,005 % antimonu, 0,0001 až 0,005 % cínu, 0,00001 až 0,005 % vizmutu, 0,00001 až 0,01 % selenu, 0,00001 až 0,003 % boru, 0,001 až 0,005 % hořčíku, přičemž nepřevyšují součty množství křemíku a fosforu 0,3 %, síry a selenu 0,015 %, antimonu, arsenu, cínu a vizmutu 0,02 %, uhlíku a dusíku 0,05 % a obsah vodíku je do 1 cm3 na 100 g oceli.Martensitic-austenitic steel with increased resistance to selective species corrosion and brittle failure, also suitable for The manufacture of welds and welds is by weight From 0.005 to 0.045% carbon; 17.5% chromium, 0.001 to 0.35% silicon, 2.00 to 6.50% of nickel, 0.01 to 0.30% of manganese, 0.0005 to 0.015% phosphorus, 0.0005 to 0.015% sulfur, 0.0001 to 0.15% oxygen, 0.001 to 0.30% nitrogen, 0.4 to 2.0% molybdenum, 0.0001 to 0.005% arsenic, 0.0001 to 0.005% arsenic; 0.005% antimony, 0.0001 to 0.005% tin, 0.00001 to 0.005% bismuth, 0.00001 to 0.005% bismuth; 0.01% selenium, 0.00001 to 0.003% boron, From 0.001 to 0.005% magnesium, while not exceeding sums of silicon and phosphorus 0.3%, sulfur and selenium 0.015%, antimony, arsenic, tin and bismuth 0.02%, carbon a nitrogen content is 0.05% and the hydrogen content is up to 1 cm 3 per 100 g of steel.
Description
Vynález se týká martenziticko-austenitické oceli se zvýšenou odolností proti selektivním druhům koroze a křehkému porušeni, zejména proti mezikrystalové a bodové korozi, koroznímu praskání, přičemž tato ocel je vhodná též pro zhotovování svarů a návarů. Je určena pro taková zpracování a použiti, při kterých jsou kladeny zvýšené požadavky na tepelné ovlivněni a mechanické i korozní namáhání v prostředích vyvolávajících mezikrystalovou korozi a mezikrystalové korozní praskání, korozní praskání za přítomnosti chloridů a jiné selektivní druhy koroze.The invention relates to martensitic-austenitic steel with increased resistance to selective types of corrosion and brittle failure, in particular to intercrystalline and point corrosion, corrosion cracking, which steel is also suitable for welding and welding. It is intended for applications where high demands are placed on thermal influences and mechanical and corrosive stresses in environments causing intergranular corrosion and intergranular corrosion cracking, chloride corrosion cracking and other selective types of corrosion.
Známé, běžně vyráběné, tvářené, lité a svařované martenziticko-austenitické oceli se sníženým obsahem uhlíku vykazují při předepsaném obsahu slitinových prvků ve vztahu k obsahu uhlíku a popř. dusíku nebo při obsahu uhlíku do 0,05 % hmot. dobrou odolnost proti korozi. Jsou-li však tyto oceli vystaveny delší dobu teplotám v rozmezí 350-650 °C, objeví se u nich zvýšená citlivost k mezikrystalové korozi, popř. k mezikrystalovému koroznímu praskání, v důsledku precipitace karbidů chrómu.Known, commercially produced, wrought, cast and welded, carbon-reduced martensitic-austenitic steels exhibit, at the prescribed content of the alloy elements, in relation to the carbon content and, where appropriate, the carbon content. % nitrogen or at a carbon content of up to 0.05 wt. good corrosion resistance. However, if these steels are exposed to temperatures in the range of 350-650 ° C for an extended period of time, they will have an increased sensitivity to intergranular corrosion or corrosion. to intercrystalline corrosion cracking due to the precipitation of chromium carbides.
K mezikrystalové, popř. mezifázové povaze napadení a křehkému porušení, může u nich dojít i v důsledku segregace některých nečistot na hranicích zrn. Tyto oceli, svary a návary obsahující poměrně vysoké množství nečistot - fosforu, síry, kyslíku, antimonu, arsenu, olova aj.K intercrystal, resp. the interphase nature of the attack and the fragile failure, they may also occur as a result of segregation of some impurities at the grain boundaries. These steels, welds and welds contain relatively high amount of impurities - phosphorus, sulfur, oxygen, antimony, arsenic, lead etc.
- podléhají také snadno koroznímu praskání, bodové a štěrbinové korozi. Vyšší obsahy nečistot- are also subject to corrosion cracking, spot and crevice corrosion. Higher impurities
- fosforu, síry, stejně jako dusíku, mědi, chrómu v ocelích s běžnými obsahy uhlíku, zvyšují sklon ke křehkému porušení.- phosphorus, sulfur, as well as nitrogen, copper, chromium in steels with normal carbon contents, increase the tendency to brittle failure.
Tyto nedostatky do značné míry odstraňuje martenziticko-austenitická ocel se zvýšenou odolností proti selektivním druhům koroze a křehkému porušení, vhodná též pro zhotovování svarů a návarů podle vynálezu, jehož podstata spočívá v tom, že ocel obsahuje hmotnostně od 0,005 do 0,045 % uhlíku, od 12,50 do 17,50 % chrómu, od 2,00 do 6,50 % niklu, od 0,001 do 0,35 % křemíku, od 0,01 do 0,30 % manganu, od 0,0005 do 0,015 % fosforu, od 0,0005 do 0,015 % síry, od 0,0001 do 0,15 % kyslíku, od 0,001 do 0,030 % dusíku, od 0,4 do 2,0 % molybdenu, od 0,001 do 0,035 % mědi, od 0,001 do 0,007 % hliníku, od 0,0001 do 0,005 % arsenu, od 0,0001 do 0,005 % antimonu, od 0,0001 do 0,005 % cínu, od 0,00001 do 0,005 % vizmutu, od 0,00001 do 0,01 % selenu, od 0,00001 do 0,003 % boru, od 0,001 do 0,005 % hořčíku, přičemž nepřevyšují součty množství křemíku a fosforu hmotnostně 0,3 %, síry a selenu 0,0150 %, antimonu, arsenu, cínu a vizmutu 0,02 %, uhlíku a dusíku 0,05 % a do 1 ci/ vodíku na 100 g oceli.These drawbacks are largely eliminated by martensitic-austenitic steel with increased resistance to selective types of corrosion and brittle failure, also suitable for the production of welds and welds according to the invention, characterized in that the steel contains from 0.005 to 0.045% carbon, , 50 to 17.50% chromium, from 2.00 to 6.50% nickel, from 0.001 to 0.35% silicon, from 0.01 to 0.30% manganese, from 0.0005 to 0.015% phosphorus, from 0.0005 to 0.015% sulfur, from 0.0001 to 0.15% oxygen, from 0.001 to 0.030% nitrogen, from 0.4 to 2.0% molybdenum, from 0.001 to 0.035% copper, from 0.001 to 0.007% aluminum , from 0.0001 to 0.005% arsenic, from 0.0001 to 0.005% antimony, from 0.0001 to 0.005% tin, from 0.00001 to 0.005% bismuth, from 0.00001 to 0.01% selenium, from 0 , 00001 to 0,003% of boron, from 0,001 to 0,005% of magnesium, not exceeding 0,3% by weight of silicon and phosphorus, 0,0150% of sulfur and selenium, 0,06% of antimony, arsenic, tin and bismuth, carbon and a nitrogen of 0.05% and up to 1 ci / hydrogen per 100 g of steel.
Martenziticko-austenitické oceli podle vynálezu a z nich zhotovené svary a návary se vyznačují zvýšenou odolností proti různým selektivním druhům koroze zejména i v tepelně ovlivněných prostředích a v prostředích vyvolávajících mezikrystalovou korozi a korozní praskání, jako je např. prostředí chloridové.The martensitic-austenitic steels according to the invention and the welds and welds made therefrom are characterized by increased resistance to various selective types of corrosion, especially in heat-affected environments and in environments causing intergranular corrosion and corrosion cracking, such as chloride environments.
Vynález j-e dále blíže objasněn na příkladech složeni oceli. Snížení množství doprovodných prvků se dosahuje výběrem vhodných předslitin, metalurgických a technologických postupů. Obsahy uhlíku, chrómu, niklu a molybdenu, popř. i některých dalších prvků, jsou voleny ve vztahu k požadovaným mechanickým charakteristikám k uvažovanému koroznímu namáháni. Obsah jednotlivých prvků je uváděn v procentech hmotnosti.The invention is further elucidated by way of examples of steel compositions. Reducing the amount of accompanying elements is achieved by selecting suitable master alloys, metallurgical and technological processes. The contents of carbon, chromium, nickel and molybdenum, respectively. and some other elements are selected in relation to the required mechanical characteristics to the corrosion stress to be considered. The content of the individual elements is given in percent by weight.
Přiklad 1Example 1
Ocel v složeni: uhlíkuSteel in composition: carbon
0,029 % manganu křemíku chrómu niklu0.029% of silicon chromium nickel
0,15 % 0,1 %0.15% 0.1%
15,7 %15.7%
5,4 » fosforu síry molybdenu kyslíku5.4 »sulfur phosphorus molybdenum oxygen
0,005 % 0,006 % 1,50 % 0,007 %0.005% 0.006% 1.50% 0.007%
má vysokou odolnost proti křehkému porušení.has high resistance to brittle failure.
Tepelně ovlivněné oblasti svarových spojů nejsou náchylné k mezikrystalové korozi. Náchylnost k bodové korozi a koroznímu praskání je o více než 2 řády menši něž u dosud známých ocelí se 16 S chrómu a 6 % niklu.Thermally affected areas of welded joints are not susceptible to intergranular corrosion. The susceptibility to point corrosion and corrosion cracking is more than 2 orders of magnitude less than the previously known steels with 16 S chromium and 6% nickel.
Příklad 2Example 2
je odolná proti mezikrystalové korozi, omezeně citlivá ke koroznímu praskání, bodové korozi a ke křehkému porušení.It is resistant to intergranular corrosion, limited to corrosion cracking, point corrosion and brittle failure.
Oceli podle vynálezu mohou být využity zejména v chemickém průmyslu a energetice všude tam, kde jsou kladeny zvýšené požadavky na odolnost proti korozi celkové a selektivním druhům korozního napadení a na spolehlivost a bezpečnost provozu i dlouhodobou životnost zařízení.The steels according to the invention can be used in particular in the chemical industry and power engineering wherever increased demands are placed on the corrosion resistance of total and selective types of corrosion attack and on the reliability and safety of operation and the long life of the equipment.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS858347A CS257877B1 (en) | 1985-11-19 | 1985-11-19 | Martensitic-austenitic steel with increased resistance to selective corrosion sorts and short failures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS858347A CS257877B1 (en) | 1985-11-19 | 1985-11-19 | Martensitic-austenitic steel with increased resistance to selective corrosion sorts and short failures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS834785A1 CS834785A1 (en) | 1987-11-12 |
| CS257877B1 true CS257877B1 (en) | 1988-06-15 |
Family
ID=5433884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS858347A CS257877B1 (en) | 1985-11-19 | 1985-11-19 | Martensitic-austenitic steel with increased resistance to selective corrosion sorts and short failures |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS257877B1 (en) |
-
1985
- 1985-11-19 CS CS858347A patent/CS257877B1/en unknown
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| Publication number | Publication date |
|---|---|
| CS834785A1 (en) | 1987-11-12 |
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