US3250612A - High temperature alloys - Google Patents
High temperature alloys Download PDFInfo
- Publication number
- US3250612A US3250612A US424809A US42480965A US3250612A US 3250612 A US3250612 A US 3250612A US 424809 A US424809 A US 424809A US 42480965 A US42480965 A US 42480965A US 3250612 A US3250612 A US 3250612A
- Authority
- US
- United States
- Prior art keywords
- range
- nickel
- manganese
- nitrogen
- iron
- 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
Links
- 239000000956 alloy Substances 0.000 title claims description 23
- 229910045601 alloy Inorganic materials 0.000 title claims description 23
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 52
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 39
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 36
- 229910052759 nickel Inorganic materials 0.000 claims description 26
- 229910052742 iron Inorganic materials 0.000 claims description 19
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 18
- 229910052748 manganese Inorganic materials 0.000 claims description 18
- 239000011572 manganese Substances 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 18
- 229910052715 tantalum Inorganic materials 0.000 claims description 14
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 13
- 239000010955 niobium Substances 0.000 claims description 9
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 239000010941 cobalt Substances 0.000 claims description 6
- 229910017052 cobalt Inorganic materials 0.000 claims description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052721 tungsten Inorganic materials 0.000 claims description 6
- 239000010937 tungsten Substances 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 238000005266 casting Methods 0.000 claims description 5
- 229910052804 chromium Inorganic materials 0.000 claims description 5
- 239000011651 chromium Substances 0.000 claims description 5
- 230000003647 oxidation Effects 0.000 claims description 5
- 238000007254 oxidation reaction Methods 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 5
- 239000010703 silicon Substances 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 description 16
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 13
- 239000000203 mixture Substances 0.000 description 13
- 239000011573 trace mineral Substances 0.000 description 9
- 235000013619 trace mineral Nutrition 0.000 description 9
- 229910052726 zirconium Inorganic materials 0.000 description 8
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 6
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- 238000007792 addition Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000001627 detrimental effect Effects 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 3
- 239000000395 magnesium oxide Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052845 zircon Inorganic materials 0.000 description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 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
- 239000000155 melt Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur Substances 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
- C22C38/26—Ferrous alloys, e.g. steel alloys containing chromium with niobium or tantalum
-
- 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
- C22C38/22—Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
-
- 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
Definitions
- This invention relates to austenitic alloys for high temperature applications of the general character disclosed and claimed in the copending application of Amedee Roy,
- melts were prepared in four different types of melting crucibles: A1 0 MgO, Zircon (Zr O -SIO and graphite.
- the small heats were cast into investment molds (both solid and shell type) containing approximately ten test bar cavities GA" .dia. gage section). These cast to size test bars were utilized to determine the elevated temperature properties of the heats.
- Table I shows the composition of the alloys tested and the amounts of trace elements included. The amount of iron (Fe) is not shown, it constituting essentially the remainder thereof.
- Table H shows the stress rupture life under various loads and the stress for a rupture life of 100 hours, at
- composition of a typical heat before adding any of the trace elements may be seen from heat No. 267D.
- zirconium Zr
- heats 293D, 272D, 273D, 277D, 320D, and 321D in Tables I and II for example representing compositions containing respectively 0.005, 0.01, 0.1, 0.25, 0.5 and 1.0 weight percent zirconium added to the base composition 267D that best results were obtained with heat 273D containing 0.1 zirconium. It was noted too that single additions of zirconium up to 1.0% did not substantially adversely affect the basic composition property.
- Table II the letter A appearing after the heat number means that the as-cast alloy was solution heat treated at 2250" F. for /2 hour and aged at 1400 F. for 20 hours after air cooling.
- Heats 243D, 246D, 247D and 248D were, for example, prepared using respectively graphite, alumina, zircon, and zircon crucibles and picked up at least some of the trace elements therefrom. Most of the other heats were prepared in magnesia crucibles which are less likely to impart the trace elements to the heats.
- An iron base casting type alloy for producing products of complex shape and having substantial oxidation resistance and high strength at elevated temperature and characterized by a structure having a network outlining an austenitic phase embedding fine dot-like precipitates, 5 said alloy consisting essentially of by weight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium; between 0 to 2.5% silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in'the range 0.1 to 9%, columbium and tantalum,
- said columbium and tantalum combined being in the range 0.1 to 5%, up to 15% of metal from the group consisting of, nickel in the range 0 to 15%, manganese in .the range 0 to 15%, cobalt in the range 0 to 8% 27,000 0 to 0.6% nitrogen; a small but eifective amount of boron not exceeding 0.025% to promote distribution of the precipitates; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, 500 said manganese being at least between 2 to 10% when the nickel is less than 2% and nitrogen is present, at least between about 5 to 10% when substantially no nitrogen present and the nickel is less than about 2%, and at least about 10% when the nickel is zero.
- the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, said manganese being at least between 2 to 10% when the nickel is less than 2% and nitrogen is present, at least between about 5 to when substantially no nitrogen is present and the nickel is less than about 2%, and at least about 10% when the nickel is zero.
- An iron base casting type alloy for producing prod ucts of complex shape and having substantial oxidation resistance and high strength at elevated temperature, said alloy consisting essentially of, by weight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium; between 0 to 2.5% silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in the range 0.1 to 9%, columbium and tantalum, said columbium and tantalum combined being in the range 0.1 to 5%, up to 15 of metal from the group consisting of, nickel in the range 0 to 15%, manganese in the range 0 to 15%, cobalt in the range 0to 8%; 0 to 0.6% nitrogen; about 0.001 to 0.025% boron; about 0.005 to 0.1% zirconium; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%,
- An iron base casting type alloy for producing products of complex shape and having substantial oxidation resistance and high strength at elevated temperature, said alloy consisting essentially of,'byweight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium; between 0 to 2.5% silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in the range 0.1 to 9%, colurnbium and tantalum, said oolumbium and tantalum combined being in the range 0.1 to 5%, up to 15% of metal from the group consisting of, nickel in the range 0 to 15 manganese in the range 0 to 15%, cobalt in the range 0 to 8%; 0 to 0.6% nitrogen; about 0.001 to 0.025% boron; up to 2% titanium; up to 0.5 phosphorous; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about
- An iron base alloy as claimed in' claim 3 wherein a test bar thereof /4" in diameter exposed to 1500 F. for 100 hours is generally characterized by a structure having an interdendritic network of substantially lederburite phases outlining an austenitic phase embedding relatively fine dot-like precipitates randomly distributed therein.
- An iron base casting type alloy for producing prod ucts of complex shape and having substantial oxidation resistance and high strength at elevated temperature, said alloy consisting essentially of, by weight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium, be tween 0 to 2.5 silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in the range 0.1 to 9%, columbium and tantalum, said columbium and tantalum combined being in the-range 0.1 to 5%, up to 15 of metal from the group consisting of, nickel in the range 0 to 15 manganese in the range 0 to 15%, cobalt in the range 0 to 8%, 0 to 0.6% nitrogen; about 0.001 to 0.01% boron; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, said manganese being at least between 2
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Gas Separation By Absorption (AREA)
Description
United States Patent This is a continuation-in-part of application Serial No. 119,902, filed June 27, 1961, now Patent No. 3,165,400.
This invention relates to austenitic alloys for high temperature applications of the general character disclosed and claimed in the copending application of Amedee Roy,
one of the present applicants, and Walter E. Jominy, Serial No. 119,902, filed June 27, 1961, which by this cross reference is made a part hereof, and especially to such composition made to include or exclude trace amounts of certain elements in order to improve the elevated tempera ture properties of the compositions and/ or minimize variations in the properties between heats of apparently the same composition.
Early work with alloys of the above type had often shown a wide range in properties between heats of apparently the same composition (insofar as the elements thereof could be readily analyzed by conventional techniques). It was theorized that trace elements picked up either from the raw materials or the melting crucible were strongly influencing elevated temperature properties and preventing consistent properties from being attained. Their effect often was to lower the property values expected of the alloy in the absence of these effects.
Extensive investigations were conducted to investigate the effects of various beneficial or detrimental trace elements that could possibly be present in the alloy. To this end small melts (approximately 3600 gms.) were prepared of the purest raw materials (commercial grades) available plus small additions of one of the following elements: B, Zr, Ti, Ta, P, S, and Al. For example, six heats of pure materials were prepared with Zr additions ranging from 0.005 to 1% by weight and similar heats were prepared with the others. In some cases two of the trace elements, for instance Zr and B were added together to determine if their effects were complimentary or additive. Moreover similar melts were prepared in four different types of melting crucibles: A1 0 MgO, Zircon (Zr O -SIO and graphite. The small heats were cast into investment molds (both solid and shell type) containing approximately ten test bar cavities GA" .dia. gage section). These cast to size test bars were utilized to determine the elevated temperature properties of the heats.
Table I shows the composition of the alloys tested and the amounts of trace elements included. The amount of iron (Fe) is not shown, it constituting essentially the remainder thereof.
Table H shows the stress rupture life under various loads and the stress for a rupture life of 100 hours, at
the indicated temperature to provide a convenient basis for comparison.
The composition of a typical heat before adding any of the trace elements may be seen from heat No. 267D.
With respect to zirconium (Zr) it will be noted from heats 293D, 272D, 273D, 277D, 320D, and 321D in Tables I and II for example, representing compositions containing respectively 0.005, 0.01, 0.1, 0.25, 0.5 and 1.0 weight percent zirconium added to the base composition 267D that best results were obtained with heat 273D containing 0.1 zirconium. It was noted too that single additions of zirconium up to 1.0% did not substantially adversely affect the basic composition property. In Table II the letter A appearing after the heat number means that the as-cast alloy was solution heat treated at 2250" F. for /2 hour and aged at 1400 F. for 20 hours after air cooling.
With respect to boron (B), it will be noted from heats,
292D, 285D, 268D, 286D and 269D in Tables I and II, for example, representing compositions containing respectively 0.002, 0.005, 0.01, 0.025 and 0.05 weight percent boron added to the 'base composition 267D that the optimum properties in the A (solution treated and aged) condition as shown in Table II was obtained with heat 285D containing 0.005 boron. The proper-ties of heats 286D and 269D containing 0.025 and 0.05 boron were adversely affected by these amounts of boron. It would appear that up to about 0.025% boron may be safely used in the base composition 267D preferably up to about 0.01%. For the same heats in as cast condition those containing 0.025% and above were inferior to those containing less than this amount of boron. The use of boron is especially desirable because it appears to promote an optimum distribution of the precipitates and an optimum structure With respect to a combination of boron and zirconium heats 274D, 275D, 278D and 279D it appeared that the combination in the optimum amount used separately did not produce any improved properties in the base alloy containing single additions of these elements.
With respect to trace elements phosphorous, sulfur, titanium, tantalum and aluminum as reported by heats 290D, 291D, 322D, 323D, 299D, 301D, 295D, 296D, 297D and 324D, 388D, 389D and 391D, it appears that trace amounts of these elements are not detrimental. However, 2% or more titanium is detrimental and phosphorous additions at 0.5% and above produced alloys which did not respond to heat treatment.
With respect to the crucibles used for melting the heats it was found that part of all of the trace elements given above may be picked up therefrom. Heats 243D, 246D, 247D and 248D were, for example, prepared using respectively graphite, alumina, zircon, and zircon crucibles and picked up at least some of the trace elements therefrom. Most of the other heats were prepared in magnesia crucibles which are less likely to impart the trace elements to the heats.
Table I.Chemical compositions of heat (nominal weight percent) Alloy C Cr Si W Mo Cb Ni Mn N B Others 243D Q- 1. 0 18. 0 0. 5 2. 0 2. 0 2. 0 5. 0 5. 0 0.3 Graphite crucible.
246D 1. O 18. 0 0. 5 2. O 2. 0 2. 0 5. 0 5. 0 0.3 Alumina.
crucible.
247D 1. 0 18. 0 0. 5 v2. 0 2. 0 2. 0 5. 0 5. 0 0.3 Zirconia crucible.
263D- 1. 0 18.0 0. 5 2. 0 2. 0 2. 0 5. 0 5. 0 0.3 0.1 Ti.
265D 1.0 18.0 0.5 2.0 2.0 2.0 5.0 5.0 0.3 0.5 Ti.
267D 1.0 18.0 0.5 1.0 1.0 1.0 5.0 5.0 MgO crucible.
Stress-rupture data at 1,500 F.
Stress 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 m 5 5 5 5 m 0 0 0 w 5 5 0 5 0 8 5 1 y 1 y 1 1 2 0 1 7 1 0 9 0 9 0 0 0 9 4 9 5 9 L 3 2 3 2 3 2 2 2 2 2 3 2 2 2 2 2 2 h 0 0 1 03342 093432 9 32 0 0 3 46 332 m r. 1 ED 60810 406782 031252 437159 77349 6843 LumooJml 09035 32 8 39m 3* om 7 42 0 4 om7 5oo e 5999 18366 518%43 81 .5%1 9 075 0383 m 1 2 1 11 3 1 l 2 4 1 2 2 T 00000 000000 000000 000000 00000 0000 00000 000000 0000 00 0 0 00000 0000 00000 000000 wm0000 00m0m0 00 00 0000 5 5 2 0 0 0 5 7 5 2 0 7 0 5 2 7 5 7 0 5 0 7 5 7 2 0 7 5 7 0 7 23333 322333 232%32 223232 22232 2232 Alloy 1. An iron base casting type alloy for producing products of complex shape and having substantial oxidation resistance and high strength at elevated temperature and characterized by a structure having a network outlining an austenitic phase embedding fine dot-like precipitates, 5 said alloy consisting essentially of by weight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium; between 0 to 2.5% silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in'the range 0.1 to 9%, columbium and tantalum,
said columbium and tantalum combined being in the range 0.1 to 5%, up to 15% of metal from the group consisting of, nickel in the range 0 to 15%, manganese in .the range 0 to 15%, cobalt in the range 0 to 8% 27,000 0 to 0.6% nitrogen; a small but eifective amount of boron not exceeding 0.025% to promote distribution of the precipitates; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, 500 said manganese being at least between 2 to 10% when the nickel is less than 2% and nitrogen is present, at least between about 5 to 10% when substantially no nitrogen present and the nickel is less than about 2%, and at least about 10% when the nickel is zero.
Stress-rupture data at1,500 F.
Table Il-Continued a 1 C n e h m m n D" w w 5 6 m 0 S 2 9 W a 3 w 3 1 O 5 0 Ku 0 PO 0 5 1 1 3 3 4 4 5 7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 P 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 E m w m m 0 w m m 5 5 0 5 0 m 5 5 0 5 5 5 1 1 a y 1 1 co y y I 0 5 0 5 8 oo 7 4 4 4 0 J 2" H m m m m M 3 2 3 2 2 2 2 2 2 2 2 r. 2 h 0 0 1 5 5 5 y 1757 9522774 055200 018111 awm 47112 U%..m1257 M %B% 533 211 33 1111 1 1 11 nm r. 1 ED. 71029 2055395 038374 7081622 288143 476618 6248725 6653 5 5 052991 3 7 5 0 9 43 92232 9 omn rhlomnmd 5 9m7 &0 flm OWHQA ZLRW 0 793597 103 44 7 12 99 1 3132 3 493 8 258 17 m 54 13 0 u 7m1577 6m17 3626M 11 4 2 2 T 00000 000000 000000 0000000 000000 000000 0000000 000000 000000 00 00 000000 000000 0000000 000000 000000 00 wmmmm mmmwmm mwmmmm WWWWOOW 000000 000000 0000000 000000 000000 00 S v I 1 y 7 y i 1 1 i y 1 i 1 1 y y y y 1 7 i 1 1 y i y y 1 i 1 1 y y y y i D 1 1 y 1 i r y y i 520 0 55200 075520 075520 0755520 075077 075075 07 m W%333 o n 23333 322333 322333 3222333 322322 322322 32 t s n u u u u n n u u n u n a u 0 n u n u u n n u n u n n V. o m m n n u u n I n A D D D WD MMMD D D D D D D D D D DD w 1111111 2 3 5 6 9 1 0 2 3 4 55 9999999 9 9 9 9 0 2 2 2 2 22 2222222 2 2 WW 2 2 3 3 3 3 3 33 2. An iron base alloy as claimed in claim 1 wherein ,a test bar thereof A in diameter exposed to 1500 F.
carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in the range 0.1 to 9%, columbium and tantalum, said columbium and tantalum combined being in the range 0.1 to 5 up to 15% of metal from the group consisting of, nickel in the range to 15 manganese in the range 0 to 15%, cobalt in the range 0 to 8%; 0 to 0.6% nitrogen; 21 small but efiective amount of zirconium not exceeding 1.0% to promote the 100 hour stress rupture strength at 1500" F. of the alloy when heat treated; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, said manganese being at least between 2 to 10% when the nickel is less than 2% and nitrogen is present, at least between about 5 to when substantially no nitrogen is present and the nickel is less than about 2%, and at least about 10% when the nickel is zero.
4. An iron base casting type alloy for producing prod ucts of complex shape and having substantial oxidation resistance and high strength at elevated temperature, said alloy consisting essentially of, by weight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium; between 0 to 2.5% silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in the range 0.1 to 9%, columbium and tantalum, said columbium and tantalum combined being in the range 0.1 to 5%, up to 15 of metal from the group consisting of, nickel in the range 0 to 15%, manganese in the range 0 to 15%, cobalt in the range 0to 8%; 0 to 0.6% nitrogen; about 0.001 to 0.025% boron; about 0.005 to 0.1% zirconium; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, said manganese being at least between 2 to 10% when the nickel is less than 2% and nitrogen is present, at least between about 5 to 10% when substantially no nitrogen is present and the nickel is less than about 2%, and at least about 10% when the nickel is zero.
, 5. An iron base casting type alloy for producing products of complex shape and having substantial oxidation resistance and high strength at elevated temperature, said alloy consisting essentially of,'byweight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium; between 0 to 2.5% silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in the range 0.1 to 9%, colurnbium and tantalum, said oolumbium and tantalum combined being in the range 0.1 to 5%, up to 15% of metal from the group consisting of, nickel in the range 0 to 15 manganese in the range 0 to 15%, cobalt in the range 0 to 8%; 0 to 0.6% nitrogen; about 0.001 to 0.025% boron; up to 2% titanium; up to 0.5 phosphorous; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, said manganese being at least between 2 to 10% when the nickel is less than 2% and nitrogen is' present, at least between about 5 to 10% when substantially no nitrogen is present and the nickel is less than about 2%, and at least about 10% when'the nickel is zero.
6. An iron base alloy as claimed in' claim 3 wherein a test bar thereof /4" in diameter exposed to 1500 F. for 100 hours is generally characterized by a structure having an interdendritic network of substantially lederburite phases outlining an austenitic phase embedding relatively fine dot-like precipitates randomly distributed therein.
7. An iron base casting type alloy for producing prod ucts of complex shape and having substantial oxidation resistance and high strength at elevated temperature, said alloy consisting essentially of, by weight percent, about 0.6 to 1.6% carbon; about 12 to 35% chromium, be tween 0 to 2.5 silicon; between 0.2 to 12% of a plurality of carbide forming elements from the group consisting of tungsten in the range 0.1 to 10%, molybdenum in the range 0.1 to 9%, columbium and tantalum, said columbium and tantalum combined being in the-range 0.1 to 5%, up to 15 of metal from the group consisting of, nickel in the range 0 to 15 manganese in the range 0 to 15%, cobalt in the range 0 to 8%, 0 to 0.6% nitrogen; about 0.001 to 0.01% boron; the balance essentially iron, said iron content being at least 40%, said nickel being at least about 2% when said manganese is less than about 1%, said manganese being at least between 2 to 10% when the nickel is less than 2% and nitrogen is present, at least between about 5 to 10% when substantially no nitrogen is present and the nickel is less than about 2%, and at least about 10% when the nickel is zero.
References Cited by the Examiner UNITED STATES PATENTS 3,165,400 [/1965 Roy et al. 126
DAVID L. RECK, Primary Examiner.
Claims (1)
1. AN IRON BASE CASTING TYPE ALLOY FOR PRODUCING PRODUCTS OF COMPLEX SHAPE AND HAVING SUBSTANTIAL OXIDATION RESISTANCE AND HIGH STRENGTH AT ELEVATED TEMPERATURE AND CHARACTIERIZED BY A STRUCTURE HAVING ANETWORK OUTLINING AN AUSTENITIC PHASE EMBEDDING FINE DOT-LIKE PRECIPITATES, SAID ALLOY CONSISTING ESSENTIALLY OF BY WEIGHT PERCENT, ABOUT 0.6 TO 1.6% CARBON; ABOUT 12 TO 35% CHROMIUM; BETWEEN 0 TO 2.5% SILICON; BETWEEN 0.2 TO 12% OF A PLURALITY OF CARBIDE FORMING ELEMENTS FROM THE GROUP CONSISTING OF TUNGSTEN IN THE RANGE 0.1 TO 10%, MOLYBDENUM IN THE RANGE 0.1 TO 9%, COLUBIUM AND TANTALUM, SAID COLUMBIUM AND TANTALUM COMBINED BEING IN THE RANGE 0.1 TO 5%, UP TO 15% OF METAL FROM THE GROUP CONSISTING OF, NICKEL IN THE RANGE 0 TO 15%, MANGANESE IN THE RANGE 0 TO 15%, COBALT IN THE RANGE O TO 8%; 0 TO 0.6% NITROGEN; A SMALL BUT EFFECTIVE AMOUNT OF BORON NOT EXCEEDING 0.025% TO PROMOTE DISTRIBUTION OF THE PRECIPITATES; THE BALANCE ESSENTIALLY IRON, SAID IRON CONTENT BEING AT LEAST 40%, SAID NICKEL BEING AT LEAST ABOUT 2% WHEN SAID MANGANESE IS LESSTHAN ABOUT 1%, SAID MANGANESE BEING AT LEAST BETWEEN 2 TO 10% WHEN THE NICKEL IS LESSS THAN 2% AND NITROGEN IS PRESENT, AT LEAST BETWEEN ABOUT 5 TO 10% WHEN SUBSTANTIALLY NO NITROGEN IS PRESENT AND THE NICKEL IS LESS THAN ABOUT 2%, AND AT LEAST ABOUT 10% WHEN THE NICKEL IS ZERO.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US424809A US3250612A (en) | 1965-01-11 | 1965-01-11 | High temperature alloys |
| GB55465/65A GB1132990A (en) | 1965-01-11 | 1965-12-31 | Iron base alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US424809A US3250612A (en) | 1965-01-11 | 1965-01-11 | High temperature alloys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3250612A true US3250612A (en) | 1966-05-10 |
Family
ID=23683959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US424809A Expired - Lifetime US3250612A (en) | 1965-01-11 | 1965-01-11 | High temperature alloys |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US3250612A (en) |
| GB (1) | GB1132990A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3499802A (en) * | 1966-05-04 | 1970-03-10 | Sandvikens Jernverks Ab | Ferritic,martensitic and ferriteaustenitic chromium steels with reduced tendency to 475 c.-embrittlement |
| US3645724A (en) * | 1969-02-10 | 1972-02-29 | Robert L Goldberg | Stainless steel |
| US3876475A (en) * | 1970-10-21 | 1975-04-08 | Nordstjernan Rederi Ab | Corrosion resistant alloy |
| US3901690A (en) * | 1971-05-11 | 1975-08-26 | Carpenter Technology Corp | Wear resistant alloy steels containing cb and one of ti, hf or zr |
| US4360383A (en) * | 1979-04-26 | 1982-11-23 | Nippon Piston Ring Co., Ltd. | Abrasion resistant sintered alloy for internal combustion engines |
| US4534793A (en) * | 1979-09-19 | 1985-08-13 | Research Corporation | Cast iron welding materials and method |
| US4726854A (en) * | 1979-09-19 | 1988-02-23 | Research Corporation | Cast iron welding electrodes |
| US4929288A (en) * | 1988-01-04 | 1990-05-29 | Borges Robert J | Corrosion and abrasion resistant alloy |
| WO2013066936A1 (en) * | 2011-11-01 | 2013-05-10 | Honeywell International Inc. | Low nickel austenitic stainless steel |
| WO2020050727A1 (en) * | 2018-09-07 | 2020-03-12 | Milson Foundry Nz Limited | Steel alloy |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3165400A (en) * | 1961-06-27 | 1965-01-12 | Chrysler Corp | Castable heat resisting iron alloy |
-
1965
- 1965-01-11 US US424809A patent/US3250612A/en not_active Expired - Lifetime
- 1965-12-31 GB GB55465/65A patent/GB1132990A/en not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3165400A (en) * | 1961-06-27 | 1965-01-12 | Chrysler Corp | Castable heat resisting iron alloy |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3499802A (en) * | 1966-05-04 | 1970-03-10 | Sandvikens Jernverks Ab | Ferritic,martensitic and ferriteaustenitic chromium steels with reduced tendency to 475 c.-embrittlement |
| US3645724A (en) * | 1969-02-10 | 1972-02-29 | Robert L Goldberg | Stainless steel |
| US3876475A (en) * | 1970-10-21 | 1975-04-08 | Nordstjernan Rederi Ab | Corrosion resistant alloy |
| US3901690A (en) * | 1971-05-11 | 1975-08-26 | Carpenter Technology Corp | Wear resistant alloy steels containing cb and one of ti, hf or zr |
| US4360383A (en) * | 1979-04-26 | 1982-11-23 | Nippon Piston Ring Co., Ltd. | Abrasion resistant sintered alloy for internal combustion engines |
| US4534793A (en) * | 1979-09-19 | 1985-08-13 | Research Corporation | Cast iron welding materials and method |
| US4726854A (en) * | 1979-09-19 | 1988-02-23 | Research Corporation | Cast iron welding electrodes |
| US4929288A (en) * | 1988-01-04 | 1990-05-29 | Borges Robert J | Corrosion and abrasion resistant alloy |
| WO2013066936A1 (en) * | 2011-11-01 | 2013-05-10 | Honeywell International Inc. | Low nickel austenitic stainless steel |
| US9028745B2 (en) | 2011-11-01 | 2015-05-12 | Honeywell International Inc. | Low nickel austenitic stainless steel |
| WO2020050727A1 (en) * | 2018-09-07 | 2020-03-12 | Milson Foundry Nz Limited | Steel alloy |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1132990A (en) | 1968-11-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3356542A (en) | Cobalt-nickel base alloys containing chromium and molybdenum | |
| AT394397B (en) | CORROSION RESISTANT AND WEAR RESISTANT COBALT BASE ALLOY | |
| CH375903A (en) | Niobium alloy | |
| DE69502867T2 (en) | High strength aluminum alloy | |
| US3250612A (en) | High temperature alloys | |
| CA2955320C (en) | Ni-based superalloy for hot forging | |
| CA1191724A (en) | High chromium nickel base alloys | |
| US3901690A (en) | Wear resistant alloy steels containing cb and one of ti, hf or zr | |
| US4288247A (en) | Nickel-base superalloys | |
| CA2955322C (en) | Ni-based superalloy for hot forging | |
| US2882146A (en) | High temperature niobium base alloy | |
| CA2088065C (en) | Controlled thermal expansion alloy and article made therefrom | |
| CA1214666A (en) | Controlled expansion alloy | |
| EP0035369B1 (en) | Ferritic iron-aluminium-chromium alloys | |
| US4750950A (en) | Heat treated alloy | |
| US4092183A (en) | Directionally solidified castings | |
| US2617723A (en) | Sintered high energy permanent magnets | |
| US2975051A (en) | Nickel base alloy | |
| US3798075A (en) | Method of making stainless steel containing borides | |
| US4456481A (en) | Hot workability of age hardenable nickel base alloys | |
| CA2002634A1 (en) | Niobium base high temperature alloy | |
| US3047382A (en) | Age hardening cobalt base alloy | |
| US3767479A (en) | Multicomponent eutectics for high temperature applications | |
| US3415641A (en) | Wrought nickel base alloy | |
| US3220829A (en) | Cast alloy |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: FIDELITY UNION TRUST COMPANY, 765 BROAD ST., NEWAR Free format text: MORTGAGE;ASSIGNOR:CHRYSLER CORPORATION;REEL/FRAME:003832/0358 Effective date: 19810209 Owner name: FIDELITY UNION TRUST COMPANY, TRUSTEE,NEW JERSEY Free format text: MORTGAGE;ASSIGNOR:CHRYSLER CORPORATION;REEL/FRAME:003832/0358 Effective date: 19810209 |
|
| AS | Assignment |
Owner name: CHRYSLER CORPORATION, HIGHLAND PARK, MI 12000 LYNN Free format text: ASSIGNORS HEREBY REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID INVENTIONS AND RELEASE THEIR SECURITY INTEREST.;ASSIGNORS:FIDELITY UNION BANK;ARNEBECK, WILLIAM, INDIVIDUAL TRUSTEE;REEL/FRAME:004063/0604 Effective date: 19820217 |