EP0380630B1 - Anwendung von einer zweiphasigen eisen-mangan-aluminium-kohlenstofflegierung mit hoher dämpfungsfähigkeit - Google Patents

Anwendung von einer zweiphasigen eisen-mangan-aluminium-kohlenstofflegierung mit hoher dämpfungsfähigkeit Download PDF

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Publication number
EP0380630B1
EP0380630B1 EP89908610A EP89908610A EP0380630B1 EP 0380630 B1 EP0380630 B1 EP 0380630B1 EP 89908610 A EP89908610 A EP 89908610A EP 89908610 A EP89908610 A EP 89908610A EP 0380630 B1 EP0380630 B1 EP 0380630B1
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EP
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Prior art keywords
alloy
cast iron
phase
damping capacity
alloys
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EP89908610A
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English (en)
French (fr)
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EP0380630A1 (de
EP0380630A4 (en
Inventor
Chi-Meen Wan
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Famcy Steel Corp
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Famcy Steel Corp
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Priority claimed from US07/218,695 external-priority patent/US4875933A/en
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Publication of EP0380630A4 publication Critical patent/EP0380630A4/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
    • 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

Definitions

  • This invention relates to a high damping capacity, two-phase Fe-Mn-Al-C alloy.
  • alpha-gamma two-phase alloys have been developed by adding molybdenum and cobalt to the Fe-Ni-Cr alloy system for the purpose of making alloys having both better stress corrosion and hydrogen embrittlement resistance.
  • the iron-based materials that have been used for high damping capacity are the cast irons.
  • the graphite in gray cast irons is the most important factor for absorbing the high frequency vibration wave. But cast irons generally are not workable, making them of limited value in high damping applications.
  • a ferrite-austenite two-phase alloy for high damping capacity applications, said alloy having a composition comprising of 10 to 45 wt% manganese, 4 to 15 wt% aluminum, up to 12 wt% chromium, 0.01 to 0.7 wt% carbon and optionally containing 0 to 4.0 wt% molybdenum, 0 to 4.0 wt% copper, 0 to 2.0 wt% nickel, 0 to 3.5 wt% niobium, up to 500 ppm boron, up to 0.2 wt% nitrogen, 0 to 3.5 wt% titanium, 0 to 2.0 wt% cobalt, 0 to 3.5 wt% vanadium, 0 to 3.5 wt% tungsten, 0 to 2.0 wt% zirconium, up to 2.5 wt% silicon, the balance iron and impurities, the composition being such that the ferrite phase of said alloy comprises 25% to 75%
  • Fe-Mn-Al-C alloys manganese and carbon are gamma-phase formers and aluminum is an alpha-phase former.
  • Fe-Mn-Al-C alloys can be designed to be fully gamma phase, such as Fe-29Mn-7A1-1C. Reduction of the manganese or carbon or both of them and the increase of aluminum can promote the appearance of alpha phase, and make the alloy an alpha+gamma two-phase steel.
  • the volume fraction of alpha phase can be controlled by changing the amount of manganese or aluminum or carbon or other ferrite-forming elements.
  • This example illustrates the effect of the element compositions on the change of a volume fraction in the Fe-Mn-Al-C based alloys.
  • Manganese and carbon are austenite phase stabilizers and aluminum is a ferrite phase former.
  • the effect of the carbon content on the ferrite fraction of the Fe-Mn-Al-C based alloys is shown in Table I, in which the chemical composition of aluminum and manganese are essentially constant and the carbon content decreases from 0.5 wt% to 0.11 wt%. With the decreasing of carbon content, the ferrite phase volume fractions of the alloys increases from 0% to 36%. With the change of manganese, carbon and aluminum contents, the volume fractions of ferrite phase and balanced ⁇ phase is controlled to be from 25% to 75%.
  • This example illustrates the good damping capacity of the said ⁇ + ⁇ two-phase Fe-Mn-Al-C based alloys which have been measured and determined with comparison to ductile cast iron.
  • the test sample of the invention contained 19.7Mn-5.84Al-5.74Cr-0.19C.
  • the ferrite volume fraction is about 65% balanced with ⁇ phase.
  • the damping capacity curves of the damping capacity tests of the Fe-Mn-Al-C based alloy and ductile cast iron are shown in Fig. 1 and Fig. 2. It is seen that the damping capacities of the two alloys are almost equivalent.
  • This example illustrates the good workability of ⁇ + ⁇ two-phase Fe-Mn-Al-C based alloys.
  • the alloys listed in Table II were cast into ingot; homogenized at 1200°C; cut and hot forged at 1200°C; further annealed at 1150°C and descaled.
  • the alloys were cold rolled into 2.0 mm thick strip and annealed.
  • the ferrite volume percentages of these strips were measured and are listed in Table III.
  • the mechanical properties of these annealed strips are also listed in Table III. It is seen that the alloys of the invention have good workability and excellent mechanical properties. Table II alloy no.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Laminated Bodies (AREA)

Claims (1)

  1. Verwendung einer Ferrit-Austenit-Zweiphasenlegierung in Anwendungen, die ein hohes Dämpfungsvermögen verlangen, wobei diese Legierung eine Zusammensetzung aufweist, die 10 bis 45 Gew.% Mangan, 4 bis 15 Gew.% Aluminium, bis zu 12 Gew.% Chrom und 0,01 bis 0,7 Gew.% Kohlenstoff umfaßt und gegebenenfalls 0 bis 4,0 Gew.% Molybdän, 0 bis 4,0 Gew.% Kupfer, 0 bis 2,0 Gew.% Nickel, 0 bis 3,5 Gew.% Niob, bis zu 500 ppm Bor, bis zu 0,2 Gew.% Stickstoff, 0 bis 3,5 Gew.% Titan, 0 bis 2,0 Gew.% Cobalt, 0 bis 3,5 Gew.% Vanadium, 0 bis 3,5 Gew.% Wolfram, 0 bis 2,0 Gew.% Zirkon und bis zu 2,5 Gew.% Silicium enthält, wobei der Rest Eisen und Verunreinigungen ist und die Zusammensetzung derart ist, daß die Ferritphase der Legierung 25 bis 75 Vol.% der Legierung umfaßt, der Rest im wesentlichen Austenit ist und die Legierung ein Dämpfungsvermögen mit etwa dem gleichen Wert wie duktiles Eisen hat.
EP89908610A 1988-07-08 1989-07-06 Anwendung von einer zweiphasigen eisen-mangan-aluminium-kohlenstofflegierung mit hoher dämpfungsfähigkeit Expired - Lifetime EP0380630B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US218695 1988-07-08
US07/218,695 US4875933A (en) 1988-07-08 1988-07-08 Melting method for producing low chromium corrosion resistant and high damping capacity Fe-Mn-Al-C based alloys
US341117 1989-04-20
US07/341,117 US4966636A (en) 1988-07-08 1989-04-20 Two-phase high damping capacity F3-Mn-Al-C based alloy
PCT/US1989/002950 WO1990000629A1 (en) 1988-07-08 1989-07-06 High damping capacity, two-phase fe-mn-al-c alloy

Publications (3)

Publication Number Publication Date
EP0380630A1 EP0380630A1 (de) 1990-08-08
EP0380630A4 EP0380630A4 (en) 1990-12-27
EP0380630B1 true EP0380630B1 (de) 1994-11-30

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EP89908610A Expired - Lifetime EP0380630B1 (de) 1988-07-08 1989-07-06 Anwendung von einer zweiphasigen eisen-mangan-aluminium-kohlenstofflegierung mit hoher dämpfungsfähigkeit

Country Status (7)

Country Link
EP (1) EP0380630B1 (de)
JP (1) JPH03500305A (de)
AT (1) ATE114736T1 (de)
AU (1) AU610429B2 (de)
CA (1) CA1336364C (de)
DE (1) DE68919672T2 (de)
WO (1) WO1990000629A1 (de)

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KR960006453B1 (ko) * 1993-10-22 1996-05-16 최종술 Fe-Mn계 진동 감쇠 합금강과 그 제조 방법
CN1043253C (zh) * 1995-08-18 1999-05-05 赵学胜 铝锰硅氮系奥氏体不锈耐酸钢
DE10259230B4 (de) * 2002-12-17 2005-04-14 Thyssenkrupp Stahl Ag Verfahren zum Herstellen eines Stahlprodukts
RU2401877C2 (ru) * 2005-02-02 2010-10-20 Корус Стал Бв Аустенитная сталь, имеющая высокую прочность и формуемость, способ получения упомянутой стали и ее применение
EP2008971A4 (de) 2006-04-20 2010-08-04 Asahi Glass Co Ltd Kern-schale-siliciumdioxid und herstellungsverfahren dafür
WO2013064202A1 (en) * 2011-11-03 2013-05-10 Tata Steel Nederland Technology B.V. Method of manufacturing a duplex steel sheet having enhanced formability
WO2013178887A1 (fr) * 2012-05-31 2013-12-05 Arcelormittal Investigación Desarrollo Sl Acier laminé a chaud ou a froid a faible densite, son procede de mise en oeuvre et son utilisation
FI3265102T3 (fi) 2015-03-06 2025-10-31 Atea Pharmaceuticals Inc Beta-d-2'-deoksi-2'-alfa-fluori-2'-beta-c-substituoituja-2-modifioituja-n6-substituoituja puriininukleotideja hcv-hoitoa varten
CN104674109B (zh) * 2015-03-11 2017-01-18 北京科技大学 一种低密度Fe‑Mn‑Al‑C系冷轧汽车用钢板及制备方法
KR101910744B1 (ko) * 2017-07-26 2018-10-22 포항공과대학교 산학협력단 극저온 특성이 우수한 중엔트로피 합금

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CA655825A (en) * 1963-01-15 Ciba Limited Unsaturated aliphatic amino-diols and process for their manufacture
DE1239857B (de) * 1959-06-23 1967-05-03 United States Steel Corp Verwendung einer austenitischen Stahllegierung fuer schmiedbare Bauteile
AU8261182A (en) * 1981-04-22 1982-10-28 Unisearch Limited Oxidation and corrosion-resistant febase-al-mn alloys
JPS60248866A (ja) * 1984-05-24 1985-12-09 Yamato Metal Kogyo Kk 耐海水性に優れる極低温用ステンレス鋼

Also Published As

Publication number Publication date
CA1336364C (en) 1995-07-25
JPH03500305A (ja) 1991-01-24
EP0380630A1 (de) 1990-08-08
WO1990000629A1 (en) 1990-01-25
AU610429B2 (en) 1991-05-16
DE68919672T2 (de) 1995-04-06
EP0380630A4 (en) 1990-12-27
ATE114736T1 (de) 1994-12-15
DE68919672D1 (de) 1995-01-12
AU3981589A (en) 1990-02-05

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