EP0380630A4 - High damping capacity, two-phase fe-mn-al-c alloy - Google Patents
High damping capacity, two-phase fe-mn-al-c alloyInfo
- Publication number
- EP0380630A4 EP0380630A4 EP19890908610 EP89908610A EP0380630A4 EP 0380630 A4 EP0380630 A4 EP 0380630A4 EP 19890908610 EP19890908610 EP 19890908610 EP 89908610 A EP89908610 A EP 89908610A EP 0380630 A4 EP0380630 A4 EP 0380630A4
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy
- cast iron
- alloys
- phase
- damping capacity
- 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
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
- C22C38/06—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
- Figure 1 depicts the damping capacity curve for an alloy of the invention
- Figure 2 depicts the damping capacity curve for ductile iron.
- Fe-Mn-Al-C alloys manganese ⁇ •- ⁇ tnd carbon are gamma- phase formers andaluminum is an alpha-phase former.
- Fe-Mn-Al-C alloys canbe disigned to be fully gamma phase, such as Fe-29Mn-7Al-lC. 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 to-phase steel.
- the volume fraction of alpha phase can be controlled bychanging the amount of manganese or aluminum or carbon or other ferrite-forming elements.
- Alloys according to the invention contain, in weight percent, 107. to 457 0 manganese, 47, to 127. aluminum, up to 127, chromium, 0.01% to 0.77o carbon, balance essentially iron, and are charac ⁇ terized by a microstructure containing about 257. to 757,ferrite, with the remainder austenite and bya high damping capacity on the order of a cast iron. Minor amounts of Ni,Mo,Cb,Co,Si, etc. may be included in the allov.
- This example illustrates the effect of the element compositions on the change of ⁇ 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%.
- the ferrite phase volume fractions of the alloys increases from 0% to 36%.
- the volume fractions of ferrite phase and balanced ⁇ phase is controlled to be from 25% to 75%. Within this ferrite fraction range, excellent damping capacity is always found in the Fe-Mn-Al-C based alloy.
- 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 workablility and excellent mechanical properties.
Landscapes
- 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)
Abstract
Description
Claims
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 (en) | 1990-08-08 |
EP0380630A4 true EP0380630A4 (en) | 1990-12-27 |
EP0380630B1 EP0380630B1 (en) | 1994-11-30 |
Family
ID=26913151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89908610A Expired - Lifetime EP0380630B1 (en) | 1988-07-08 | 1989-07-06 | Use of a high damping capacity, two-phase fe-mn-al-c alloy |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0380630B1 (en) |
JP (1) | JPH03500305A (en) |
AT (1) | ATE114736T1 (en) |
AU (1) | AU610429B2 (en) |
CA (1) | CA1336364C (en) |
DE (1) | DE68919672T2 (en) |
WO (1) | WO1990000629A1 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR960006453B1 (en) * | 1993-10-22 | 1996-05-16 | 최종술 | Making method of vibration decrease alloy steel & the manufacturing process |
DE10259230B4 (en) * | 2002-12-17 | 2005-04-14 | Thyssenkrupp Stahl Ag | Method for producing a steel product |
KR20070099684A (en) * | 2005-02-02 | 2007-10-09 | 코루스 스타알 베.뷔. | Austenitic steel having high strength and formability, method of producing said steel and use thereof |
KR20080111032A (en) | 2006-04-20 | 2008-12-22 | 아사히 가라스 가부시키가이샤 | Core-shell silica and method for producing same |
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 (en) * | 2012-05-31 | 2013-12-05 | Arcelormittal Investigación Desarrollo Sl | Low-density hot- or cold-rolled steel, method for implementing same and use thereof |
MY190867A (en) | 2015-03-06 | 2022-05-13 | Atea Pharmaceuticals Inc | ? -d-2'-deoxy-2'-?-fluoro-2'- ? -c-substituted-2-modified-n6-substituted purine nucleotides for hcv treatment |
CN104674109B (en) * | 2015-03-11 | 2017-01-18 | 北京科技大学 | Low-density Fe-Mn-Al-C system cold-rolled automobile steel plate and preparation method |
KR101910744B1 (en) * | 2017-07-26 | 2018-10-22 | 포항공과대학교 산학협력단 | Medium-entropy alloys with excellent cryogenic properties |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB949786A (en) * | 1959-06-23 | 1964-02-19 | United States Steel Corp | Austenitic stainless steel |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA655825A (en) * | 1963-01-15 | Ciba Limited | Unsaturated aliphatic amino-diols and process for their manufacture | |
AU8261182A (en) * | 1981-04-22 | 1982-10-28 | Unisearch Limited | Oxidation and corrosion-resistant febase-al-mn alloys |
JPS60248866A (en) * | 1984-05-24 | 1985-12-09 | Yamato Metal Kogyo Kk | Stainless steel for cryogenic service having excellent sea water resistance |
-
1989
- 1989-07-06 AT AT89908610T patent/ATE114736T1/en not_active IP Right Cessation
- 1989-07-06 EP EP89908610A patent/EP0380630B1/en not_active Expired - Lifetime
- 1989-07-06 WO PCT/US1989/002950 patent/WO1990000629A1/en active IP Right Grant
- 1989-07-06 DE DE68919672T patent/DE68919672T2/en not_active Expired - Fee Related
- 1989-07-06 JP JP1508050A patent/JPH03500305A/en active Pending
- 1989-07-06 AU AU39815/89A patent/AU610429B2/en not_active Ceased
- 1989-07-07 CA CA000605033A patent/CA1336364C/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB949786A (en) * | 1959-06-23 | 1964-02-19 | United States Steel Corp | Austenitic stainless steel |
Also Published As
Publication number | Publication date |
---|---|
AU3981589A (en) | 1990-02-05 |
AU610429B2 (en) | 1991-05-16 |
EP0380630B1 (en) | 1994-11-30 |
EP0380630A1 (en) | 1990-08-08 |
WO1990000629A1 (en) | 1990-01-25 |
CA1336364C (en) | 1995-07-25 |
DE68919672T2 (en) | 1995-04-06 |
ATE114736T1 (en) | 1994-12-15 |
JPH03500305A (en) | 1991-01-24 |
DE68919672D1 (en) | 1995-01-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4966636A (en) | Two-phase high damping capacity F3-Mn-Al-C based alloy | |
US5298093A (en) | Duplex stainless steel having improved strength and corrosion resistance | |
US5286310A (en) | Low nickel, copper containing chromium-nickel-manganese-copper-nitrogen austenitic stainless steel | |
US3953201A (en) | Ferritic stainless steel | |
AU2002252427B2 (en) | Duplex stainless steel | |
US20030021716A1 (en) | Austenitic stainless steel for cold working suitable for later machining | |
EP0380630A4 (en) | High damping capacity, two-phase fe-mn-al-c alloy | |
KR910006030B1 (en) | Austenitic stainless steel for low temperature serivece | |
EP0438992A1 (en) | Austenitic stainless steel | |
US4047941A (en) | Duplex ferrit IC-martensitic stainless steel | |
WO2014080078A1 (en) | Ferritic stainless steel | |
US2862812A (en) | Substantially nickel-free austenitic and corrosion resisting cr-mn-n steels | |
US4456482A (en) | Ferritic stainless steel | |
JPH07138708A (en) | Austenitic steel good in high temperature strength and hot workability | |
JPH0770700A (en) | High proof stress and high corrosion resistant austenitic stainless cast steel | |
JP2005325387A (en) | Low specific gravity iron alloy | |
JP3598364B2 (en) | Stainless steel | |
JPS58144460A (en) | Two-phase cast stainless steel having high corrosion resistant and high fatique strength | |
JPS61207552A (en) | Nonmagnetic austenitic stainless steel having superior working stability | |
US4009025A (en) | Low permeability, nonmagnetic alloy steel | |
CA1163470A (en) | Ferritic stainless steel | |
JPH0475305B2 (en) | ||
JPH07150289A (en) | Cr-series heat resistance steel excellent in high temperature strength | |
JP3393011B2 (en) | High toughness precipitation hardening stainless steel | |
EP0187935A1 (en) | Unstable steels |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19900302 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
A4 | Supplementary search report drawn up and despatched |
Effective date: 19901108 |
|
AK | Designated contracting states |
Kind code of ref document: A4 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
17Q | First examination report despatched |
Effective date: 19930505 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE FR GB IT LI LU NL SE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Effective date: 19941130 Ref country code: CH Effective date: 19941130 Ref country code: AT Effective date: 19941130 |
|
REF | Corresponds to: |
Ref document number: 114736 Country of ref document: AT Date of ref document: 19941215 Kind code of ref document: T |
|
REF | Corresponds to: |
Ref document number: 68919672 Country of ref document: DE Date of ref document: 19950112 |
|
ITF | It: translation for a ep patent filed |
Owner name: RIF. ISCRIZIONE REG.: 04/12/95;STUDIO TORTA SOCIET |
|
ET | Fr: translation filed | ||
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19950706 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19950707 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19950731 Ref country code: BE Effective date: 19950731 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
BERE | Be: lapsed |
Owner name: FAMCY STEEL CORP. Effective date: 19950731 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NL Effective date: 19960201 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19950706 |
|
NLV4 | Nl: lapsed or anulled due to non-payment of the annual fee |
Effective date: 19960201 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19960402 |
|
EUG | Se: european patent has lapsed |
Ref document number: 89908610.2 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19960430 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050706 |