US3859079A - High temperature oxidation resistant alloy - Google Patents

High temperature oxidation resistant alloy Download PDF

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Publication number
US3859079A
US3859079A US275650A US27565072A US3859079A US 3859079 A US3859079 A US 3859079A US 275650 A US275650 A US 275650A US 27565072 A US27565072 A US 27565072A US 3859079 A US3859079 A US 3859079A
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United States
Prior art keywords
alloy
titanium
aluminum
high temperature
chromium
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Expired - Lifetime
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US275650A
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English (en)
Inventor
Philip M Giles
Arnold R Marder
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Bethlehem Steel Corp
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Bethlehem Steel Corp
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Publication date
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Priority to US275650A priority Critical patent/US3859079A/en
Priority to CA176,888A priority patent/CA1000530A/en
Priority to DE19732339869 priority patent/DE2339869A1/de
Priority to JP48088752A priority patent/JPS4984916A/ja
Application granted granted Critical
Publication of US3859079A publication Critical patent/US3859079A/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium

Definitions

  • ABSTRACT A low-cost ferrous alloy having improved hightemperature oxidation-resistance under conditions of 75/124C,2725c/13276/ll()) cyclic heating at temperatures up to about 2500,13 and Consisting essentially of by weight percent, about [58] Field of Search 75/124, 126 D 4.0 to 82% aluminum up to about 10.5% Chromium [56] References Cited about .05 to 2.0% titanium, with the balance iron and incidental impurities, said alloy further characterized UNITED STATES PATENTS by an ffactor 2 9.0, where: 1,621,523 3/1927 Clement 75/124 V 1,641,752 9/1927 Flintermahn 75/124 f(% 041% Cr) 1,833,723 11/1931 Ruder 75/124 3 Claims, lDrawing Figure HIGH TEMPERATURE OXIDATION RESISTANT ALLOY BACKGROUND OF THE INVENTION
  • This invention relates to a low-cost, hightemperature
  • high-temperature oxidation-resistant materials were selected from high cost nickel and cobalt superalloys or ceramic materials.
  • the prior art moved to lower or less rich alloys.
  • U.S. Pat. No. 1,641,752 teaches a ferrous alloy resistant to oxidation at high temperatures, by including therein a high percentage of aluminum. Specifically, said alloy contains'from 12 to 20% aluminum, and about 1 to of a grain refining material, among which the patentee has included titanium and chromium.
  • the high temperature oxidationresistance is due at least in part to the formation of a protective coating of oxide of the aluminum on the exposed surfaces of the ferrous alloy.
  • such alloys are of limited suitability under cyclic heating and cooling conditions wherein thermal shock results in flaking and spalling of the oxide coating. Accordingly, one of the critical requirements of a suitable alloy is its ability to resist such flaking and spalling.
  • FIGURE is a graph of time of exposure to failure vs.ffor,a series of ferrous alloys falling within the alloying ranges noted previously, with time plotted on a logarithmic scale.
  • This invention relates to an oxidation resistant ferrous alloy, more particularly to a wrought ferrous alloy suitable for use in applications where ability to withstand thermal shock is critical.
  • Typical applications where the latter characteristic is significant are high temperature exhaust systems, such as a thermal reactor in automobiles, jet engines, and in the petrochemical industry. While the mention of same is not intended as a limitation on this invention, it is believed that a brief discussion thereofwill help in understanding the significance of this invention and the contributions offered thereby.
  • a thermal reactor is a container into which the hot exhaust gases flow from the automotive, jet or power producing engines, for further combustion. Air is also pumped into the reactor and admixed with said gases.
  • the reactor is generally of sufficient size (chamber volume) to give a long enough residence time ofthe admixed gases to permit complete combustion of the residual hydrocarbons and carbon monoxide. Since the combustion reaction is so strongly exothermic, temper atures may go as high as 2200F., typically about 1800F., in a highly oxidizing environment. Thus, the severe conditions of high temperature, oxidizing environment, and intermittent operation (cyclic heating and cooling), Call for a material capable of meeting these conditions. The alloys of the present invention not only fulfill these conditions, but accomplish it at a low material cost.
  • composition of the alloys of this invention fall broadly within the alloying ranges below:
  • a preferred composition is one containing at least 5.0% chromium, aluminum between about 6.0 to 8.0% and titanium between about 0.4 to 1.10%.
  • the very adherent oxide coating which forms on the alloy of this invention must contain some oxides of titanium.
  • the samples were periodically inspected and considered to have failed when either about 30% of the sample surface was covered with a porous black oxide, or when the area around the hole oxidized to the point of v 5 actually failing or by their appearance being unable to ture, the titanium forms a dual function.
  • the carbon in support the weight any further. an alloy of the type described herein tends to migrate In any case, by these objective standards, it is readily to the grain boundaries as carbides.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Heat Treatment Of Articles (AREA)
US275650A 1972-08-09 1972-08-09 High temperature oxidation resistant alloy Expired - Lifetime US3859079A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US275650A US3859079A (en) 1972-08-09 1972-08-09 High temperature oxidation resistant alloy
CA176,888A CA1000530A (en) 1972-08-09 1973-07-19 High temperature oxidation resistant alloy
DE19732339869 DE2339869A1 (de) 1972-08-09 1973-08-07 Hochtemperatur- und oxydationsfeste legierung
JP48088752A JPS4984916A (en:Method) 1972-08-09 1973-08-07

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US275650A US3859079A (en) 1972-08-09 1972-08-09 High temperature oxidation resistant alloy

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US3859079A true US3859079A (en) 1975-01-07

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US275650A Expired - Lifetime US3859079A (en) 1972-08-09 1972-08-09 High temperature oxidation resistant alloy

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US (1) US3859079A (en:Method)
JP (1) JPS4984916A (en:Method)
CA (1) CA1000530A (en:Method)
DE (1) DE2339869A1 (en:Method)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316743A (en) * 1973-10-29 1982-02-23 Tokyo Shibaura Electric Co., Ltd. High damping Fe-Cr-Al alloy
US6560563B1 (en) * 1998-03-24 2003-05-06 Exergetic Systems Llc L factor method for determining heat rate of a fossil fired system based on effluent flow
US6691054B1 (en) * 1998-03-24 2004-02-10 Exergetic Systems Llc F factor method for determining heat rate and emission rates of a fossil-fired system
DE102007056144A1 (de) * 2007-11-16 2009-05-20 Volkswagen Ag Abgaskrümmer oder Turboladergehäuse aus einer FeAl-Stahllegierung
EP3981895A4 (en) * 2019-07-31 2022-09-28 Posco FERRITE-BASED STEEL SHEET WITH EXCELLENT CORROSION RESISTANCE FOR AN EXHAUST SYSTEM

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6524405B1 (en) * 2000-02-11 2003-02-25 Hui Lin Iron base high temperature alloy
WO2013178629A1 (de) * 2012-05-29 2013-12-05 Thyssenkrupp Steel Europe Ag Warmfester fe-al-cr-stahl
DE102013115005B4 (de) * 2013-12-31 2022-01-05 Gottfried Wilhelm Leibniz Universität Hannover Verfahren zum Erzeugen einer oxidierten Oberfläche einer Metalllegierung, insbesondere bei Bauteilen, solche Bauteile und Werkzeuge, sowie der Verwendung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1621523A (en) * 1917-12-18 1927-03-22 Ludlum Steel Co Titanium alloy
US1641752A (en) * 1919-10-10 1927-09-06 Gen Electric Oxidation-resisting material
US1833723A (en) * 1923-06-07 1931-11-24 Gen Electric Alloy
US2941883A (en) * 1957-10-02 1960-06-21 Martin Co Alloy especially suited to cladding nuclear fuel elements
US2987394A (en) * 1959-03-25 1961-06-06 John J Mueller Iron-aluminum base alloys
US3068094A (en) * 1959-01-27 1962-12-11 Ford Motor Co Alloy of iron, aluminum, and chromium
US3676109A (en) * 1970-04-02 1972-07-11 Cooper Metallurg Corp Rust and heat resisting ferrous base alloys containing chromium and aluminum

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1621523A (en) * 1917-12-18 1927-03-22 Ludlum Steel Co Titanium alloy
US1641752A (en) * 1919-10-10 1927-09-06 Gen Electric Oxidation-resisting material
US1833723A (en) * 1923-06-07 1931-11-24 Gen Electric Alloy
US2941883A (en) * 1957-10-02 1960-06-21 Martin Co Alloy especially suited to cladding nuclear fuel elements
US3068094A (en) * 1959-01-27 1962-12-11 Ford Motor Co Alloy of iron, aluminum, and chromium
US2987394A (en) * 1959-03-25 1961-06-06 John J Mueller Iron-aluminum base alloys
US3676109A (en) * 1970-04-02 1972-07-11 Cooper Metallurg Corp Rust and heat resisting ferrous base alloys containing chromium and aluminum

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4316743A (en) * 1973-10-29 1982-02-23 Tokyo Shibaura Electric Co., Ltd. High damping Fe-Cr-Al alloy
US6560563B1 (en) * 1998-03-24 2003-05-06 Exergetic Systems Llc L factor method for determining heat rate of a fossil fired system based on effluent flow
US6691054B1 (en) * 1998-03-24 2004-02-10 Exergetic Systems Llc F factor method for determining heat rate and emission rates of a fossil-fired system
DE102007056144A1 (de) * 2007-11-16 2009-05-20 Volkswagen Ag Abgaskrümmer oder Turboladergehäuse aus einer FeAl-Stahllegierung
EP3981895A4 (en) * 2019-07-31 2022-09-28 Posco FERRITE-BASED STEEL SHEET WITH EXCELLENT CORROSION RESISTANCE FOR AN EXHAUST SYSTEM

Also Published As

Publication number Publication date
CA1000530A (en) 1976-11-30
DE2339869A1 (de) 1974-02-28
JPS4984916A (en:Method) 1974-08-15

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