EP2031080A1 - Alliage résistant aux températures élevées - Google Patents

Alliage résistant aux températures élevées Download PDF

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Publication number
EP2031080A1
EP2031080A1 EP08163031A EP08163031A EP2031080A1 EP 2031080 A1 EP2031080 A1 EP 2031080A1 EP 08163031 A EP08163031 A EP 08163031A EP 08163031 A EP08163031 A EP 08163031A EP 2031080 A1 EP2031080 A1 EP 2031080A1
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EP
European Patent Office
Prior art keywords
weight
temperature alloy
alloy according
alloys
alloy
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
Application number
EP08163031A
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German (de)
English (en)
Other versions
EP2031080B1 (fr
Inventor
Mohamed Youssef Dr. Nazmy
Andreas KÜNZLER
Markus Staubli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Technology GmbH
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Alstom Technology AG
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Publication of EP2031080A1 publication Critical patent/EP2031080A1/fr
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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
    • C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
    • 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
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • 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
    • C22C38/26—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
    • C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C22C38/32—Ferrous alloys, e.g. steel alloys containing chromium with boron

Definitions

  • the invention relates to the field of materials technology. It relates to a high-temperature iron-based alloy containing about 20% by weight of Cr and several parts by weight of Al and minor amounts of other constituents, and which have good mechanical properties and very good oxidation resistance at service temperatures of up to 1000 ° C.
  • ODS oxide-dispersion-strengthened, oxide dispersion strengthened
  • iron z. B. ferritic ODS FeCrAI alloys
  • They are due to their excellent mechanical properties at high temperatures preferred for thermally and mechanically highly stressed components, eg. B. for gas turbine blades used.
  • thermocouple protection tubes used, for example, in temperature control gas turbine sequential combustion gas turbines where they are exposed to extremely high temperatures and oxidizing atmospheres.
  • Table 1 sets forth the nominal chemical compositions (in weight%): Table 1: Nominal composition of known ODS-FeCrAlTi alloys component Fe Cr al Ti Si Addition of reactive elements (in the form of an oxide dispersion) alloy designation Kanthal APM rest 20.0 5.5 12:03 12:23 ZrO 2 -Al 2 O 3 MA 956 rest 20.0 4.5 0.5 - Y 2 O 3 -Al 2 O 3 PM 2000 rest 20.0 5.5 0.5 - Y 2 O 3 -Al 2 O 3
  • the materials mentioned have very high creep ruptures at very high temperatures and also excellent high-temperature oxidation resistance by forming an Al 2 O 3 protective film, as well as a high resistance to sulfidation and steam oxidation. They have strong directional characteristics. For example, in pipes, the creep strength in the transverse direction is only about 50% of the creep strength in the longitudinal direction.
  • the aim of the invention is to avoid the mentioned disadvantages of the prior art.
  • the invention is based on the object to develop a suitable material for the above applications, which is less expensive than the known from the prior art material PM 2000, but has at least as good oxidation resistance.
  • the material according to the invention should be readily thermoformable and should have better mechanical properties than z.
  • KANTHAL APM which is used for heating elements.
  • the alloy preferably contains 5 to 6% by weight of Al, particularly preferably 5.5 to 6% by weight of Al. This forms a good Al 2 O 3 protective film on the material surface which enhances the high temperature oxidation resistance.
  • the material according to the invention particularly preferably comprises 2-4% by weight of Mo and / or 2-4% by weight of Ta.
  • Ta, Zr and B are elements which act as precipitation strengthening agents.
  • Table 2 Compositions of the investigated alloys according to the invention component Fe Cr al Ta Not a word Zr B Y Si alloy designation 2007 rest 20 5.5 4 - 0.2 12:05 0.1 - 2008 rest 20 5.5 - 4 0.2 12:05 0.1 - 2009 rest 20 8th - 4 0.2 12:05 0.1 - 2010 rest 20 6 - 8th 0.2 12:05 0.1 - 2011 rest 20 5.5 - 4 0.2 12:05 0.1 0.5 2012 rest 20 6 2 2 0.2 12:05 0.1 - 2013 rest 20 6 4 4 0.2 12:05 0.1 - 2014 rest 20 6 - 4 0.2 12:05 0.1 0.5 2015 rest 20 5.5 4 4 0.2 12:05 0.1 - 2016 rest 20 5.5 - 4 0.2 12:05 0.1 12:25
  • novel alloys were prepared by arc melting the specified elements and then rolled at temperatures of 900-800 ° C before, inter alia, the tensile specimens were prepared.
  • Fig. 1 For the alloys listed, the weight change at 1100 ° C over time over a period of 12 hours is shown.
  • the alloy according to the invention 2008 (inter alia with 4% Mo and 5.5% Al) shows about a comparable oxidation behavior as the comparative alloy PM 2000 and is even better with the long removal times (lower weight change), while the alloy 2009 (inter alia with 4% Mo and 8% Al) is worst in this respect and can not reach the values of PM 2000 at these temperatures. This is due to the comparatively high aluminum content, the 8% by weight of Al being the maximum value, the optimum being 5 to 6% by weight of Al.
  • Fig. 2 For the specified alloys, the weight change at 1000 ° C in air over time over a period of 1000 hours is shown. It turns out that the two inventive alloys 2014 and 2013, but especially the alloy 2013, have a significantly improved oxidation behavior. After 1000 hours of aging in air at 1000 ° C, the weight changes in the two inventive alloys only one-third (alloy 2013) to less than half (alloy 2014) of the weight change compared to the known alloy PM 2000. Apparently affects a combination of Mo and Ta in equal proportions particularly well on the oxidation behavior at 1000 ° C from. In particular, Ta increases the activity of Al in the given range and improves the oxidation resistance.
  • FIGS. 3 to 5 the results of tensile tests in the temperature range from room temperature to 1000 ° C are shown.
  • Fig. 3 shows the dependence of the tensile strength on the temperature of the specified materials. At room temperature, the values of the investigated materials are relatively close to each other. Some of the materials according to the invention (eg alloys 2007 and 2013) are stronger at room temperature than those known from the prior art Materials), in others there are hardly any differences to the well-known alloys PM 2000 and Kanthal APM.
  • the tensile strength values remain approximately constant as a function of the temperature, then they drop markedly as expected.
  • the inventive alloys investigated invariably have higher tensile strengths than Kanthal APM and somewhat lower tensile strengths than PM 2000. However, this is associated with the excellent oxidation behavior of these alloys at 1000 ° C. (see Fig. 2 ), then these are very good property combinations.
  • Fig. 4 the dependence of the yield strength on the temperature is shown. The tendency corresponds approximately to the course of the tensile strength according to Fig. 3 ,
  • Fig. 5 finally shows the dependence of the elongation at break of the temperature in the range from room temperature to 1000 ° C.
  • the elongation at break values in the range from RT to 400 ° C. are approximately constant, at 600 ° C. the maximum value is twice the value compared with RT, then the elongation at break values decrease with increasing temperature until at 1000 ° C. approx. half of the value is reached at RT.
  • the increase in ductility of PM 2000 at about 600 ° C is due to the softening of the material.
  • novel materials can also be hot rolled well, they have a good plastic deformability.
  • thermocouple thermowell They are very useful as a thermocouple thermowell, the latter being used, for example, in gas turbines with sequential combustion for temperature control where they are exposed to oxidizing atmospheres.
  • the alloys according to the invention have a very high oxidation resistance at 1000 ° C. They have better mechanical properties than the Kanthal APM alloy known from the prior art. Although the strength values of the alloys according to the invention are somewhat lower at high temperatures than those of the alloy PM 2000, the ductility is considerably better for this purpose. Moreover, at 1000 ° C., the oxidation resistance is more than twice as high as in PM 2000. Since the alloys according to the invention are also cheaper than PM 2000 (cheaper components, easier production), they are outstandingly suitable as a replacement for PM 2000 for the fields of application described above.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Powder Metallurgy (AREA)
  • Heat Treatment Of Steel (AREA)
EP08163031A 2007-08-30 2008-08-27 Alliage résistant aux températures élevées Active EP2031080B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH13552007 2007-08-30

Publications (2)

Publication Number Publication Date
EP2031080A1 true EP2031080A1 (fr) 2009-03-04
EP2031080B1 EP2031080B1 (fr) 2012-06-27

Family

ID=38617266

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08163031A Active EP2031080B1 (fr) 2007-08-30 2008-08-27 Alliage résistant aux températures élevées

Country Status (5)

Country Link
US (1) US8435443B2 (fr)
EP (1) EP2031080B1 (fr)
JP (1) JP5574588B2 (fr)
CN (1) CN101476084B (fr)
CA (1) CA2639255C (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2016403428A1 (en) 2016-04-22 2018-11-01 Sandvik Intellectual Property Ab A tube and a method of manufacturing a tube
IT201900003507A1 (it) 2019-03-11 2020-09-11 Polidoro S P A Sensore di temperatura perfezionato per bruciatore a gas e assieme di un tale sensore e bruciatore

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061322A2 (fr) * 1981-03-23 1982-09-29 Hitachi, Ltd. Structure métallique revêtue par un alliage et ayant une excellente résistance à la corrosion à haute temperature et au choc thermique
JPH04128344A (ja) * 1990-09-20 1992-04-28 Nippon Steel Corp 耐熱疲労性を有する燃焼排気ガス浄化触媒担体用耐熱ステンレス箔
JPH04141558A (ja) * 1990-10-03 1992-05-15 Nippon Steel Corp 自動車触媒担体用耐熱ステンレス箔
EP0516267A1 (fr) * 1991-05-29 1992-12-02 Nisshin Steel Co., Ltd. Acier inoxydable ferritique à teneur élevée en aluminium
EP0573343A1 (fr) * 1992-06-01 1993-12-08 Sumitomo Chemical Company, Limited Tôles et feuilles en acier ferritique inoxydable et procédé pour leur fabrication
JPH05331552A (ja) * 1992-06-01 1993-12-14 Sumitomo Metal Ind Ltd フェライト系ステンレス鋼板の製造法
EP0592667A1 (fr) * 1992-03-02 1994-04-20 Nippon Steel Corporation Pot catalytique d'automobile a resistance elevee a la chaleur
JPH06212363A (ja) * 1993-01-12 1994-08-02 Kawasaki Steel Corp 高温耐酸化性および高温耐久性に優れたＦｅ−Ｃｒ−Ａｌ系合金鋼
JPH08299808A (ja) * 1995-05-12 1996-11-19 Nippon Steel Corp 耐酸化性、耐久性に優れた触媒用メタル担体の製造方法
JP2000055739A (ja) * 1998-08-05 2000-02-25 Hitachi Zosen Corp 熱電対保護管
JP2000055741A (ja) * 1998-08-05 2000-02-25 Kawasou Denki Kogyo Kk 連続測温装置
EP1076157A2 (fr) * 1999-08-09 2001-02-14 ALSTOM POWER (Schweiz) AG Elément de friction pour une turbomachine
WO2001049441A1 (fr) * 2000-01-01 2001-07-12 Sandvik Ab PROCEDE DE PRODUCTION D'UN MATERIAU EN FeCrAl ET LEDIT MATERIAU
WO2004104257A1 (fr) * 2003-05-20 2004-12-02 Sandvik Intellectual Property Ab Tube radiant pour fours de craquage
WO2005080622A1 (fr) * 2004-02-23 2005-09-01 Sandvik Intellectual Property Ab Acier cr-al pour applications haute temperature

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2933619B1 (ja) 1998-08-12 1999-08-16 日本電気移動通信株式会社 動態感知センサーおよび動態感知装置
DE10228103A1 (de) 2002-06-24 2004-01-15 Bayer Cropscience Ag Fungizide Wirkstoffkombinationen
US7563748B2 (en) 2003-06-23 2009-07-21 Cognis Ip Management Gmbh Alcohol alkoxylate carriers for pesticide active ingredients
CN1276116C (zh) 2004-10-26 2006-09-20 中国科学院兰州化学物理研究所 铁基自润滑耐磨合金

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061322A2 (fr) * 1981-03-23 1982-09-29 Hitachi, Ltd. Structure métallique revêtue par un alliage et ayant une excellente résistance à la corrosion à haute temperature et au choc thermique
JPH04128344A (ja) * 1990-09-20 1992-04-28 Nippon Steel Corp 耐熱疲労性を有する燃焼排気ガス浄化触媒担体用耐熱ステンレス箔
JPH04141558A (ja) * 1990-10-03 1992-05-15 Nippon Steel Corp 自動車触媒担体用耐熱ステンレス箔
EP0516267A1 (fr) * 1991-05-29 1992-12-02 Nisshin Steel Co., Ltd. Acier inoxydable ferritique à teneur élevée en aluminium
EP0592667A1 (fr) * 1992-03-02 1994-04-20 Nippon Steel Corporation Pot catalytique d'automobile a resistance elevee a la chaleur
JPH05331552A (ja) * 1992-06-01 1993-12-14 Sumitomo Metal Ind Ltd フェライト系ステンレス鋼板の製造法
EP0573343A1 (fr) * 1992-06-01 1993-12-08 Sumitomo Chemical Company, Limited Tôles et feuilles en acier ferritique inoxydable et procédé pour leur fabrication
JPH06212363A (ja) * 1993-01-12 1994-08-02 Kawasaki Steel Corp 高温耐酸化性および高温耐久性に優れたＦｅ−Ｃｒ−Ａｌ系合金鋼
JPH08299808A (ja) * 1995-05-12 1996-11-19 Nippon Steel Corp 耐酸化性、耐久性に優れた触媒用メタル担体の製造方法
JP2000055739A (ja) * 1998-08-05 2000-02-25 Hitachi Zosen Corp 熱電対保護管
JP2000055741A (ja) * 1998-08-05 2000-02-25 Kawasou Denki Kogyo Kk 連続測温装置
EP1076157A2 (fr) * 1999-08-09 2001-02-14 ALSTOM POWER (Schweiz) AG Elément de friction pour une turbomachine
WO2001049441A1 (fr) * 2000-01-01 2001-07-12 Sandvik Ab PROCEDE DE PRODUCTION D'UN MATERIAU EN FeCrAl ET LEDIT MATERIAU
WO2004104257A1 (fr) * 2003-05-20 2004-12-02 Sandvik Intellectual Property Ab Tube radiant pour fours de craquage
WO2005080622A1 (fr) * 2004-02-23 2005-09-01 Sandvik Intellectual Property Ab Acier cr-al pour applications haute temperature

Also Published As

Publication number Publication date
JP2009057633A (ja) 2009-03-19
US20090060774A1 (en) 2009-03-05
CN101476084A (zh) 2009-07-08
US8435443B2 (en) 2013-05-07
CA2639255A1 (fr) 2009-02-28
EP2031080B1 (fr) 2012-06-27
JP5574588B2 (ja) 2014-08-20
CN101476084B (zh) 2013-10-23
CA2639255C (fr) 2016-08-16

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