EP3126537A1 - Acier inoxydable à deux phases - Google Patents
Acier inoxydable à deux phasesInfo
- Publication number
- EP3126537A1 EP3126537A1 EP15712762.2A EP15712762A EP3126537A1 EP 3126537 A1 EP3126537 A1 EP 3126537A1 EP 15712762 A EP15712762 A EP 15712762A EP 3126537 A1 EP3126537 A1 EP 3126537A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dual
- stainless steel
- phase
- article
- manufacture
- 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.)
- Granted
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 68
- 239000010935 stainless steel Substances 0.000 title claims description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 19
- 239000012535 impurity Substances 0.000 claims abstract description 18
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 18
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 18
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 18
- 229910052796 boron Inorganic materials 0.000 claims abstract description 17
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 17
- 229910001105 martensitic stainless steel Inorganic materials 0.000 claims abstract description 17
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 38
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000011572 manganese Substances 0.000 claims description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 22
- 239000011651 chromium Substances 0.000 claims description 21
- 229910052799 carbon Inorganic materials 0.000 claims description 16
- 229910000734 martensite Inorganic materials 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 229910052717 sulfur Inorganic materials 0.000 claims description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 12
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 239000011733 molybdenum Substances 0.000 claims description 12
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 11
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 11
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 11
- 229910052802 copper Inorganic materials 0.000 claims description 11
- 229910052698 phosphorus Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- 239000011593 sulfur Substances 0.000 claims description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 8
- 239000011574 phosphorus Substances 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 7
- 239000003921 oil Substances 0.000 claims description 7
- ZDVYABSQRRRIOJ-UHFFFAOYSA-N boron;iron Chemical compound [Fe]#B ZDVYABSQRRRIOJ-UHFFFAOYSA-N 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 17
- 239000000956 alloy Substances 0.000 description 17
- 239000000463 material Substances 0.000 description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 238000005299 abrasion Methods 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000005261 decarburization Methods 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
- 238000010438 heat treatment Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing 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
-
- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/002—Heat treatment of ferrous alloys containing Cr
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0247—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
- C21D8/0263—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
-
- 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
-
- 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
-
- 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
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/005—Ferrite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2211/00—Microstructure comprising significant phases
- C21D2211/008—Martensite
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2200/00—Crystalline structure
Definitions
- the present disclosure relates to a dual-phase stainless steel having a microstructure of ferrite and tempered martensite.
- the present disclosure relates to cost-effective stainless steels having improved hardness for abrasion- resistant and/or wear-resistant applications. DESCRIPTION OF THE BACKGROUND OF THE TECHNOLOGY
- Dual-phase stainless steels can exhibit a combination of desirable properties that make them useful for a wide variety of industrial applications, such as for oil sands extraction and in the sugar industry. These steels are generally characterized by a microstructure of tempered martensite dispersed in a ferrite matrix.
- ATI 412TM stainless steel typically contains, by weight, 1 1.75% chromium (Cr), 0.90% manganese (Mn), 0.70% silicon (Si), 0.40% nickel (Ni), 0.030% sulfur (S), 0.020% carbon (C), 0% to 0.040% phosphorus (P), 0% to 0.030% nitrogen (N), and the balance iron (Fe) and other incidental impurities.
- ATI 412TM stainless steel typically has a Brinell hardness (HB) of about 177 when annealed at about 766°C, and a Brinell hardness of about 258 when annealed at about 843°C.
- Duracorr ® steel which contains, by weight, 1 1.0% to 12.5% Cr, 0.20% to 0.35% molybdenum (Mo), 0% to 1.50% Mn, 0% to 1 .00% Ni, 0% to 0.70% Si, 0% to 0.040% P, 0% to 0.030% N, 0% to 0.025% C, 0% to 0.015% S, and the balance Fe.
- Mo molybdenum
- Duracorr® stainless steel contains Mo as an alloying element, i.e., an intentional alloying addition, and not as an incidental impurity. Because of the rising costs of Mo, however, Duracorr® stainless steel may be too costly for certain applications.
- Duracorr® stainless steel typically has a hardness of about 223 HB, it can be processed to exhibit nominal hardness of 300 HB, which grade is commercially available as Duracorr® 300 stainless steel.
- Duracorr® and Duracorr® 300 stainless steels have largely the same composition, but the hardness of Duracorr® 300 stainless steel varies from 260 HB to 360 HB. The increased hardness of
- Duracorr® 300 stainless steel is accompanied by a reduction in toughness.
- the Charpy V-notch impact energy of Duracorr® 300 stainless steel at -40°C is only about 15 ft-lb on average.
- high hardness levels for example, up to about 350 HB, may be desirable in combination with higher toughness than is available from Duracorr® 300 stainless steel.
- an in-service work hardenability up to about 450-500 HB, for example, may be required in certain applications.
- a high-hardness dual-phase ferritic-martensitic stainless steel comprises, by weight, about 1 1 .5% to about 12% Cr, about 0.8% to about 1.5% Mn, about 0.75% to about 1 .5% Ni, 0% to about 0.5% Si, 0% to about 0.2% Mo, 0% to about 0.0025% B, Fe, and impurities.
- the stainless steel according to the present disclosure exhibits Brinell hardness (HB) and Charpy V-notch impact energy at -40°C (CVN) such that CVN (ft-lb) + (0.4 ⁇ HB) is about 160 or greater,
- the stainless steel comprises, by weight, about 11 .5% to about 12% Cr, about 0.8% to about 1.5% Mn, about 0.75% to about 1.5% Ni, 0% to about 0.5% Si, 0% to about 0.2% Mo, 0% to about 0.0025% B, Fe, and
- the stainless steel exhibits Brinell hardness (HB) and Charpy V-notch impact energy at -40°C (CVN) such that CVN (ft-lb) + (0.4 x HB) is about 160 or greater.
- HB Brinell hardness
- CVN Charpy V-notch impact energy at -40°C
- Figure 1 is a graph plotting Brinell hardness and Charpy V-notch impact energy of non-limiting embodiments of stainless steels according to the present disclosure in comparison to certain conventional steels.
- the present disclosure in part, is directed to cost-effective dual-phase ferritic- martensitic stainless steels having advantageous hardness and which are suitable for use in various applications requiring abrasion resistance and/or wear resistance.
- certain embodiments of dual-phase ferritic-martensitic stainless steels according to the present disclosure comprise, by weight, about 1 1 .5% to about 12% Cr, about 0.8% to about 1.5% Mn, about 0.75% to about 1 .5% Ni, 0% to about 0.5% Si, 0% to about 0.2% Mo, 0% to about 0.0025% B, Fe, and impurities.
- the stainless steels exhibit Brinell hardness (HB) and Charpy V-notch impact energy at - 40°C (CVN) such that the following is satisfied: CVN (ft-lb) + (0.4 x HB) is about 160 or greater.
- HB Brinell hardness
- CVN Charpy V-notch impact energy at - 40°C
- Cr may be provided in the alloys of the present disclosure to impart corrosion resistance.
- a Cr content of about 1 1.5% (by weight) or more may be required to provide adequate corrosion resistance.
- excessive Cr may be provided in the alloys of the present disclosure to impart corrosion resistance.
- certain embodiments of the stainless steels according to the present disclosure include a Cr content of about 1 1 .5% to about 12%, by weight.
- Mn may be provided in the alloys of the present disclosure to improve work hardenability.
- a Mn content of about 0.8% (by weight) or more may be required to achieve the desired work hardening effects.
- excessive Mn may undesirably segregate during processing of the stainless steels.
- certain embodiments of the stainless steels according to the present disclosure include a Mn content of about 0.8% to about 1.5%, by weight. In certain other embodiments, the Mn content of the stainless steels may be about 1.0% to about 1.5%, by weight.
- the addition of Mn in combination with the addition of other alloying elements can advantageously affect work hardenability such that the steels attain a hardness of about 450 HB or greater.
- Ni may be provided in the alloys of the present disclosure to help stabilize the martensitic phase of the dual-phase (martensitic-ferritic) alloys.
- a Ni content of about 0.75% by weight or more may be required to provide a material including higher levels of martensite than in Duracorr ® 300 stainless steel.
- the nickel content of the alloys may promote hardness of the alloys' martensite phase by stabilizing austenite formation during heat treatment, allowing more time for carbon diffusion.
- some embodiments of the steels according to the present disclosure include a Ni content of about 0.75% to about 1.5% (by weight) to provide a cost-effective dual-phase stainless steel with high hardness levels up to about 350 HB, in combination with higher toughness than is typical of
- the Ni content of stainless steels according to the present disclosure may be about .0% to about 1 .5%, by weight.
- the level of Si may be limited to (1 ) destabilize the ferritic phase of the dual- phase stainless steels and/or (2) avoid embrittling phases such as the sigma phase. Accordingly, certain embodiments of the steels according to the present disclosure include 0% to no more than about 0.5% Si, by weight.
- the level of Mo may be limited to (1 ) destabilize the ferritic phase of the dual- phase stainless steels and/or (2) avoid embrittling phases such as the sigma phase. Accordingly, certain embodiments of the steels according to the present disclosure include 0% to no more than about 0.2% Mo, by weight. In certain other embodiments of the steels according to the present disclosure, the Mo concentration is 0% to no more than about 0.1 %, by weight
- B may be provided in the dual-phase stainless steels of the present disclosure to improve martensite hardness.
- Certain embodiments of the steels according to the present disclosure include 0% to about 0.0025% B, by weight. In certain embodiments of the steels, the B content may be about 0.002% to about 0.0025%, by weight.
- Incidental elements and impurities in the disclosed alloys may include, for example, one or more of C, N, P, and S. In certain embodiment of the stainless steels according to the present disclosure, the total content of these elements is no more than 0.1 %, by weight. In certain embodiments, C may be present in the steels disclosed herein in an amount no more than 0.025%, by weight.
- S may be present in the steels disclosed herein in an amount no more than 0.01 %, by weight.
- N may be present in the steels disclosed herein in an amount no more than 0.03%, by weight.
- Incidental levels of various metallic elements also may be present in embodiments of alloys according to the present disclosure.
- certain non-limiting embodiments of alloys according to the present disclosure may include up to 0.25% copper (Cu), by weight.
- dual-phase ferritic-martensitic stainless steels comprise by weight: about 1 1 .5% to about 12% Cr; about 1.0% to about 1 .5% Mn; about 1 .0% to about 1 .5% Ni; 0% to about 0.5% Si; 0% to about 0.1 % Mo; 0% to about 0.0025% B; 0% to about 0.025% C; 0% to about 0.01 % S; 0% to about 0.03% N, Fe, and impurities.
- about 1 1 .5% to about 12% Cr about 1.0% to about 1 .5% Mn; about 1 .0% to about 1 .5% Ni; 0% to about 0.5% Si; 0% to about 0.1 % Mo; 0% to about 0.0025% B; 0% to about 0.025% C; 0% to about 0.01 % S; 0% to about 0.03% N, Fe, and impurities.
- the stainless steels further comprise P.
- the total concentration of C, N, P, and S is no greater than about 0.1 %, by weight.
- the concentration of B in the steels is about 0.002% to about 0.0025%, by weight.
- the steels include no more than 0.25% Cu, by weight.
- dual-phase ferritic-martensitic stainless steels consist essentially of, by weight: about 1 1.5% to about 12% chromium; about 0.8% to about 1.5% manganese; about 0.75% to about 1.5% nickel; 0% to about 0.5% silicon; 0% to about 0.2% molybdenum; 0% to about 0.0025% boron; 0% to about 0.025% carbon; 0% to about 0.01 % sulfur; 0% to about 0.03% nitrogen; optionally at least one of copper and phosphorus; iron; and impurities.
- dual-phase ferritic-martensitic stainless steels consist essentially of, by weight: about 11.5% to about 12% chromium; about 1.0% to about 1.5% manganese; about 1 .0% to about 1.5% nickel; 0% to about 0.5% silicon; 0% to about 0.1 % molybdenum; 0% to about 0.0025% boron; 0% to about 0.025% carbon; 0% to about 0.01 % sulfur; 0% to about 0.03% nitrogen; optionally at least one of copper and phosphorus; iron; and impurities.
- dual-phase ferritic-martensitic stainless steels consist of, by weight: about 1 1 .5% to about 12% chromium; about 0.8% to about 1.5% manganese; about 0.75% to about 1.5% nickel; 0% to about 0.5% silicon; 0% to about 0.2% molybdenum; 0% to about 0.0025% boron; 0% to about 0.025% carbon; 0% to about 0.01 % sulfur; 0% to about 0.03% nitrogen; optionally at least one of copper and phosphorus; iron; and impurities.
- dual-phase ferritic-martensitic stainless steels consist of, by weight: about 11.5% to about 12% chromium; about 1.0% to about 1.5% manganese; about 1.0% to about 1.5% nickel; 0% to about 0.5% silicon; 0% to about 0.1 % molybdenum; 0% to about 0.0025% boron; 0% to about 0.025% carbon; 0% to about 0.01 % sulfur; 0% to about 0.03% nitrogen; optionally at least one of copper and phosphorus; iron; and impurities.
- hardness is generally inversely related to toughness.
- Brinell hardness is the primary measure of hardness
- Charpy V-notch impact energy at -40°C is the primary measure of toughness.
- CVN (ft-lb) + (0.4 ⁇ HB) of the steels is about 160 or greater.
- hardness is about 300 HB or greater
- CVN is about 50 ft-lb or greater.
- the steels according to the present disclosure have an in-service work hardenability up to a hardness of about 450 HB or greater.
- Table 1 includes the compositions and certain properties of an embodiment of the dual-phase ferritic-martensitic stainless steels according to the present disclosure and of conventional ATI 412TM stainless steel and conventional Duracorr® 300 stainless steel. Heats of the three alloys listed in Table 1 were melted into slabs weighing about 15,000 lb and rolled at a temperature of about 1950 °F to produce material about 6 mm thick. Following the rolling process, the steels were annealed at 766°C or 843°C, for 15 minutes, and air cooled.
- ASTM Materials (ASTM) standard A370 at room temperature, using a tungsten carbide ball indenter, on samples measuring about 5 cm in gauge length and about 0.5 cm in thickness.
- the Charpy tests were conducted according to ASTM standard A370 and E23 at about -40°C on transverse samples measuring about 10 mm ⁇ 2.5 mm.
- dual-phase stainless steels according to the present disclosure are prepared using conventional stainless steel production practices including, for example, melting of starting materials in an electric furnace, decarburization via AOD, and casting to an ingot. Ingots may be cast, for example, by continuous casting or ingot pouring. In certain embodiments, the cast material may be heat treated (austenitized) or sold as-rolled.
- alloys according to the present disclosure are numerous. As described and evidenced above, the dual-phase stainless steels described herein are capable of being used in many applications where abrasion resistance and/or wear resistance is important. Articles of manufacture for which the steels according to the present disclosure would be particularly advantageous include, for example, parts and equipment used in oil sands extraction and parts and equipment used in sugar processing. Other applications for the stainless steels accoring to the present disclosure will be readily apprent to ordinarily skill practitioners. Those having ordinary skill may readily manufacture these and other articles of manufacture from the stainless steels according to the present disclosure using conventional manufacturing techniques.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Heat Treatment Of Steel (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15712762T PL3126537T3 (pl) | 2014-04-01 | 2015-03-12 | Dwufazowa stal nierdzewna |
SI201531308T SI3126537T1 (sl) | 2014-04-01 | 2015-03-12 | Dvo-fazno nerjaveče jeklo |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/231,778 US20150275340A1 (en) | 2014-04-01 | 2014-04-01 | Dual-phase stainless steel |
PCT/US2015/020122 WO2015153092A1 (fr) | 2014-04-01 | 2015-03-12 | Acier inoxydable à deux phases |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3126537A1 true EP3126537A1 (fr) | 2017-02-08 |
EP3126537B1 EP3126537B1 (fr) | 2020-05-13 |
Family
ID=52811202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15712762.2A Active EP3126537B1 (fr) | 2014-04-01 | 2015-03-12 | Acier inoxydable à deux phases |
Country Status (15)
Country | Link |
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US (1) | US20150275340A1 (fr) |
EP (1) | EP3126537B1 (fr) |
JP (1) | JP6621419B2 (fr) |
KR (1) | KR20160140733A (fr) |
CN (1) | CN106460128A (fr) |
AU (1) | AU2015241412B2 (fr) |
CA (1) | CA2944491A1 (fr) |
ES (1) | ES2808627T3 (fr) |
MX (1) | MX2016012853A (fr) |
PL (1) | PL3126537T3 (fr) |
RU (1) | RU2721668C2 (fr) |
SI (1) | SI3126537T1 (fr) |
TW (1) | TWI651419B (fr) |
UA (1) | UA119168C2 (fr) |
WO (1) | WO2015153092A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US11318566B2 (en) | 2016-08-04 | 2022-05-03 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
US10640854B2 (en) | 2016-08-04 | 2020-05-05 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
US11339817B2 (en) | 2016-08-04 | 2022-05-24 | Honda Motor Co., Ltd. | Multi-material component and methods of making thereof |
US11511375B2 (en) | 2020-02-24 | 2022-11-29 | Honda Motor Co., Ltd. | Multi component solid solution high-entropy alloys |
Family Cites Families (29)
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JPS5453615A (en) * | 1977-10-05 | 1979-04-27 | Kubota Ltd | Martensitic stainless cast steel for paper-making suction roll |
US4608099A (en) * | 1984-10-10 | 1986-08-26 | Amax Inc. | General purpose maintenance-free constructional steel of superior processability |
CA1305911C (fr) * | 1986-12-30 | 1992-08-04 | Teruo Tanaka | Procede de production d'une bande d'acier inoxydable au chrome a structure duplex, caracterisee par une resistance et un allongement eleves ainsi qu'une faible anisotropie plane |
RU2033462C1 (ru) * | 1991-12-04 | 1995-04-20 | Маркелова Татьяна Александровна | Феррито-мартенситная сталь |
JP3172561B2 (ja) * | 1991-12-21 | 2001-06-04 | 日新製鋼株式会社 | 複合組織ステンレス鋼ばねの製造法 |
JP3602201B2 (ja) * | 1995-05-24 | 2004-12-15 | 日新製鋼株式会社 | 高強度複相組織ステンレス鋼帯又は鋼板の製造方法 |
CN1161378A (zh) * | 1996-01-16 | 1997-10-08 | 艾利格汉尼·勒德鲁姆公司 | 生产双相铁素体不锈钢带的方法 |
JP3761280B2 (ja) * | 1997-03-28 | 2006-03-29 | 日新製鋼株式会社 | プレスプレート用鋼帯およびプレスプレートの製法 |
JP3862836B2 (ja) * | 1997-11-17 | 2006-12-27 | 日新製鋼株式会社 | 耐疵付き性に優れた鏡面仕上げ複相組織ステンレス鋼板及びその製造方法 |
JPH11229092A (ja) * | 1998-02-19 | 1999-08-24 | Nisshin Steel Co Ltd | 摺動性に優れる高強度複相組織ステンレス鋼帯および鋼板とこれを用いた機械部品 |
JPH11286852A (ja) * | 1998-03-31 | 1999-10-19 | Nisshin Steel Co Ltd | 複相組織ステンレス鋼素材からなる高耐久性おさ歯 |
JP4022991B2 (ja) * | 1998-06-23 | 2007-12-19 | 住友金属工業株式会社 | フェライト−マルテンサイト2相ステンレス溶接鋼管 |
JP2002220640A (ja) * | 2001-01-30 | 2002-08-09 | Nisshin Steel Co Ltd | 高強度耐摩耗鋼 |
JP3698058B2 (ja) * | 2001-02-13 | 2005-09-21 | 住友金属工業株式会社 | 高Crフェライト系耐熱鋼材 |
JP2002332543A (ja) * | 2001-03-07 | 2002-11-22 | Nisshin Steel Co Ltd | 疲労特性及び耐高温ヘタリ性に優れたメタルガスケット用高強度ステンレス鋼及びその製造方法 |
KR100545093B1 (ko) * | 2001-11-05 | 2006-01-24 | 주식회사 포스코 | 12 크롬 스테인레스강 열연강재의 제조방법 |
JP3975882B2 (ja) * | 2001-11-15 | 2007-09-12 | Jfeスチール株式会社 | 溶接部の加工性並びに靭性に優れた高耐食性低強度ステンレス鋼とその溶接継手 |
JP3961341B2 (ja) * | 2002-05-10 | 2007-08-22 | 日新製鋼株式会社 | 溶接構造物用高強度複相ステンレス鋼板の製造法 |
JP3920185B2 (ja) * | 2002-09-27 | 2007-05-30 | 日新製鋼株式会社 | 耐たわみ性に優れたステンレス鋼製の二輪車用タイヤリム材および二輪車用フレーム材 |
US7294212B2 (en) * | 2003-05-14 | 2007-11-13 | Jfe Steel Corporation | High-strength stainless steel material in the form of a wheel rim and method for manufacturing the same |
FR2872825B1 (fr) * | 2004-07-12 | 2007-04-27 | Industeel Creusot | Acier inoxydable martensitique pour moules et carcasses de moules d'injection |
BRPI0609856A2 (pt) * | 2005-04-28 | 2010-05-11 | Jfe Steel Corp | tubo de aço inoxidável tendo excelente capacidade de dilatação para produtos tubulares para campos petrolìferos |
JP5000281B2 (ja) * | 2006-12-05 | 2012-08-15 | 新日鐵住金ステンレス株式会社 | 加工性に優れた高強度ステンレス鋼板およびその製造方法 |
JP5220311B2 (ja) * | 2006-12-27 | 2013-06-26 | 新日鐵住金ステンレス株式会社 | 衝撃吸収特性に優れた構造部材用ステンレス鋼板 |
JP5145793B2 (ja) * | 2007-06-29 | 2013-02-20 | Jfeスチール株式会社 | 油井管用マルテンサイト系ステンレス継目無鋼管およびその製造方法 |
WO2009131248A1 (fr) * | 2008-04-25 | 2009-10-29 | Jfeスチール株式会社 | Acier contenant du cr martensitique à faible teneur en carbone |
CN102899587B (zh) * | 2011-07-25 | 2015-01-21 | 宝山钢铁股份有限公司 | 一种双相不锈钢及其制造方法 |
KR101463313B1 (ko) * | 2012-12-21 | 2014-11-18 | 주식회사 포스코 | 내마모특성이 우수한 스테인리스 강관 및 그 제조방법 |
CN103469097B (zh) * | 2013-09-29 | 2016-04-27 | 宝山钢铁股份有限公司 | 高强度马氏体铁素体双相不锈钢耐腐蚀油套管及其制造方法 |
-
2014
- 2014-04-01 US US14/231,778 patent/US20150275340A1/en not_active Abandoned
-
2015
- 2015-03-12 KR KR1020167028606A patent/KR20160140733A/ko not_active Application Discontinuation
- 2015-03-12 WO PCT/US2015/020122 patent/WO2015153092A1/fr active Application Filing
- 2015-03-12 CA CA2944491A patent/CA2944491A1/fr not_active Abandoned
- 2015-03-12 ES ES15712762T patent/ES2808627T3/es active Active
- 2015-03-12 RU RU2016142683A patent/RU2721668C2/ru active
- 2015-03-12 JP JP2016560351A patent/JP6621419B2/ja active Active
- 2015-03-12 MX MX2016012853A patent/MX2016012853A/es unknown
- 2015-03-12 PL PL15712762T patent/PL3126537T3/pl unknown
- 2015-03-12 SI SI201531308T patent/SI3126537T1/sl unknown
- 2015-03-12 AU AU2015241412A patent/AU2015241412B2/en active Active
- 2015-03-12 EP EP15712762.2A patent/EP3126537B1/fr active Active
- 2015-03-12 CN CN201580018031.2A patent/CN106460128A/zh active Pending
- 2015-04-01 TW TW104110764A patent/TWI651419B/zh active
- 2015-12-03 UA UAA201610885A patent/UA119168C2/uk unknown
Also Published As
Publication number | Publication date |
---|---|
US20150275340A1 (en) | 2015-10-01 |
JP6621419B2 (ja) | 2019-12-18 |
AU2015241412B2 (en) | 2019-11-21 |
PL3126537T3 (pl) | 2020-11-02 |
CN106460128A (zh) | 2017-02-22 |
UA119168C2 (uk) | 2019-05-10 |
WO2015153092A1 (fr) | 2015-10-08 |
RU2016142683A3 (fr) | 2018-12-28 |
TWI651419B (zh) | 2019-02-21 |
SI3126537T1 (sl) | 2020-09-30 |
CA2944491A1 (fr) | 2015-10-08 |
ES2808627T3 (es) | 2021-03-01 |
JP2017512907A (ja) | 2017-05-25 |
EP3126537B1 (fr) | 2020-05-13 |
RU2016142683A (ru) | 2018-05-04 |
KR20160140733A (ko) | 2016-12-07 |
TW201602361A (zh) | 2016-01-16 |
MX2016012853A (es) | 2017-10-16 |
RU2721668C2 (ru) | 2020-05-22 |
AU2015241412A1 (en) | 2016-10-20 |
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