WO2012016649A1 - Verfahren zur herstellung von bauteilen, die endformnah aus einer dispersionsverstärkten eisen- oder nickelbasislegierung gebildet sind - Google Patents
Verfahren zur herstellung von bauteilen, die endformnah aus einer dispersionsverstärkten eisen- oder nickelbasislegierung gebildet sind Download PDFInfo
- Publication number
- WO2012016649A1 WO2012016649A1 PCT/EP2011/003702 EP2011003702W WO2012016649A1 WO 2012016649 A1 WO2012016649 A1 WO 2012016649A1 EP 2011003702 W EP2011003702 W EP 2011003702W WO 2012016649 A1 WO2012016649 A1 WO 2012016649A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- powder
- component
- binder
- dispersion
- mixture
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/1017—Multiple heating or additional steps
- B22F3/1021—Removal of binder or filler
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1084—Alloys containing non-metals by mechanical alloying (blending, milling)
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Definitions
- the invention relates to a method for producing components which are formed close to the end of a dispersion-reinforced iron or nickel-based alloy.
- Under base alloys are to be understood as those in which iron or nickel is contained more than 50% by mass in addition to other alloying elements.
- the components produced according to the invention should be able to be used for high-temperature applications and also be able to withstand corrosive and mechanical stress.
- a desired field of application are components of turbochargers for internal combustion engines.
- high temperature alloys especially nickel alloys for such applications used. It is known, for example, for turbochargers of diesel engines components, which are made in investment casting with, for example, the alloy “Inconel713.” Other alloys that have sufficient strength at even higher temperatures, can only be produced at high cost and can cause deficiencies in the Do not avoid corrosion or cavitation.
- components with dispersion-reinforced iron or nickel-base alloys can not be produced by the conventional casting methods. This relates in particular to the unachievable homogeneity and a single-phase microstructure in the component material.
- the procedure is such that a starting powder mixture in which a powder of an iron or nickel-based alloy containing at least 99% by mass and the remainder of a powder is contained in the at least one dispersion-enhancing component, a grinding process within a protective gas atmosphere is subjected to an average particle size d 50 ⁇ 30 ym, preferably ⁇ 20 ⁇ has been obtained in the starting powder mixture.
- a particle size distribution should have been achieved, in which di 0 ⁇ 10 ⁇ , and d 90 ⁇
- dispersion-enhancing component or even more than one such dispersion-enhancing component can be used in the invention.
- the powder mixture obtained after grinding is mixed with an organic binder.
- the powder-binder mixture should have a viscosity suitable for shaping within a molding tool.
- binder a single suitable organic component can be used, or several components can also form a binder.
- a binder for example, a polyamide, which achieves a suitable viscosity in combination with other components, can be used.
- the flowability of the powder-binder mixture should be at or for the molding in the region of 5 cm 3/10 min to 40 cm 3/10 min.
- the flowability was determined by the MVR method (melt volume rate).
- the shaping can be carried out particularly advantageously in the metal powder injection molding process, in which the powder-binder mixture can be injected into a mold at elevated pressure. As a result, an improved close to the final shape can be achieved and also complex outer contours, which can also have undercuts, be produced.
- the powder / binder mixture can be heated to an appropriate temperature for injection into the mold. the .
- the powder-binder mixture should contain from 5% to 10% organic binders by weight.
- one or more components are removed from the component. This can be done chemically (e.g., in a solvent), catalytically, by sublimation, and / or a thermal process.
- the unbound component is then sintered at ambient pressure conditions in a non-oxidizing atmosphere at a temperature in the range of 1200 ° C. to 1500 ° C. with a holding time of at least 0.5 h, preferably at least 1 h, until a physical density of the component material is reached. which corresponds to the theoretical density of the component material of at least 94%.
- the component is hot isostatically pressed at a temperature of at least 1000 ° C., preferably at least 1100 ° C., with a holding period of at least 2.5 h, preferably at least 5 h, at a pressure in the range from 100 Pa to 200 MPa become.
- a physical density of the component material can be achieved which corresponds to the theoretical density of the component material of at least 99%.
- component material can as
- dispersion-enhancing component at least one selected from among ceramic oxides, nitrides, carbides and borides.
- ceramic oxides are Y 2 0 3 and A1 2 0 3 , Zr0 2 and Hf0 2 , as nitride Si 3 N 4 , as carbide are SiC, B 4 C, HfC and as boride HfB 2 and TiB 2 are preferred.
- the dispersion-enhancing component (s) should be used with a maximum particle size of 100 nm, preferably in the range 30 nm to 50 nm.
- the already mentioned removal of one or more components of the binder system takes place after shaping.
- this can be carried out with a solvent (eg water, acetone, alcohol), by means of catalyst (eg nitric acid), by sublimation and / or a thermal treatment (eg by successive evaporation of at least one or more components).
- a solvent eg water, acetone, alcohol
- catalyst eg nitric acid
- sublimation and / or a thermal treatment eg by successive evaporation of at least one or more components.
- the detachment / removal can take place in one or more process steps.
- the result is an open porosity in the material, through which then the last remaining binder components can be removed by evaporation immediately before sintering.
- Removal be dipped in a solvent or solvent mixture or sprayed with it.
- the respective binder component (s) is then progressively released progressively into the interior of the component starting from the surface of the component.
- the dissolution increases the porosity, which, however, can be reduced again during sintering and in particular during hot isostatic pressing (HIP).
- the first process step, the grinding, which must be carried out after mixing the starting powder, should be done in a ball mill and thereby a mass ratio of starting powder to grinding balls of at least 1:10 be maintained.
- the high energy milling in a planetary ball mill in non-oxidizing atmosphere over a period of 25 h to 70 h, preferably 40 h to 60 h to be performed.
- Example 1 The invention will be further explained by way of example below.
- Example 1 The invention will be further explained by way of example below.
- the powder mixture was subjected to a high energy milling process in a planetary ball mill.
- Mahlkugel was 10 times larger than the mass of the powder mixture. It was milled in an argon atmosphere over a period of 50 hours. After grinding, the powder mixture had a
- Particle size distribution dso ⁇ IV m, dio ⁇ 10 ym and dgo ⁇ 30 ⁇ It consisted of particles that were predominantly rounded and elliptical.
- This powder mixture was mixed with 35 g of a polyamide-based binder system. At a temperature of 130 ° C was a melt flow rate of 30 cm 3/10 min, determined achieved with MVR. The pasty mass was then injected into a metal injection mold and brought into the desired shape of the component. After cooling and solidification, the binder components were removed in two stages.
- the demolded component was placed in acetone as a solvent for 24 hours. This removed 70% of the binder system from the component. This took place successively starting from the surface into the interior, whereby pores formed in the component material.
- thermal removal of at least one component or of the entire binder contained in the binder can also be carried out.
- the so-called brown part may be subjected to a thermal treatment in a suitable atmosphere, preferably argon.
- a suitable atmosphere preferably argon.
- the atmosphere may also have been made with hydrogen or nitrogen.
- the binder-free shaped body can then be sintered without pressure. It can be sintered in the same atmosphere as in the thermal removal of the binder or in a high vacuum. It was sintered at a maximum temperature of 1430 ° C, which has been held for 3 h.
- the component material After sintering, the component material reached a physical density of 94.5% of the theoretical density.
- the density was increased to 99.2%.
- a temperature of 1150 ° C was held for a period of 5 h and at a pressure of
- the component material was single-phase and the grain sizes in the material ranged from 5 to 40 m.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112011102581.5T DE112011102581B4 (de) | 2010-08-02 | 2011-07-23 | Verfahren zur Herstellung von Bauteilen, die endformnah aus einer dispersionsverstärkten Eisen- oder Nickelbasislegierung gebildet sind |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10008036.5 | 2010-08-02 | ||
EP10008036 | 2010-08-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012016649A1 true WO2012016649A1 (de) | 2012-02-09 |
Family
ID=44629042
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2011/003702 WO2012016649A1 (de) | 2010-08-02 | 2011-07-23 | Verfahren zur herstellung von bauteilen, die endformnah aus einer dispersionsverstärkten eisen- oder nickelbasislegierung gebildet sind |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE112011102581B4 (de) |
WO (1) | WO2012016649A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102020204031A1 (de) * | 2020-03-27 | 2021-09-30 | Robert Bosch Gesellschaft mit beschränkter Haftung | Verfahren und Vorrichtung zur Herstellung eines partikelverstärkten Kompositwerkstoff-Bauteils |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070151639A1 (en) * | 2006-01-03 | 2007-07-05 | Oruganti Ramkumar K | Nanostructured superalloy structural components and methods of making |
CN101538674A (zh) * | 2009-05-06 | 2009-09-23 | 北京科技大学 | 一种制备氧化物弥散强化型奥氏体不锈钢的方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1162882A (en) * | 1966-02-02 | 1969-08-27 | Gen Electric | Improvements in Chromium-Containing Alloys of Improved Resistance to Oxidation and Nitrification |
US4758273A (en) * | 1984-10-23 | 1988-07-19 | Inco Alloys International, Inc. | Dispersion strengthened aluminum alloys |
JPH03232920A (ja) * | 1990-02-06 | 1991-10-16 | Daido Steel Co Ltd | 鉄/クロム分散強化合金を使用したスキッドレール |
-
2011
- 2011-07-23 WO PCT/EP2011/003702 patent/WO2012016649A1/de active Application Filing
- 2011-07-23 DE DE112011102581.5T patent/DE112011102581B4/de active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070151639A1 (en) * | 2006-01-03 | 2007-07-05 | Oruganti Ramkumar K | Nanostructured superalloy structural components and methods of making |
CN101538674A (zh) * | 2009-05-06 | 2009-09-23 | 北京科技大学 | 一种制备氧化物弥散强化型奥氏体不锈钢的方法 |
Non-Patent Citations (3)
Title |
---|
M. TURKER ET AL: "Investigation of rheological properties of mechanically alloyed and turbula processed composite powder PIM feedstock by capillar rheometer", POWDER METALLURGY, vol. 47, no. 1, 1 January 2004 (2004-01-01), pages 49 - 54, XP055010975, ISSN: 0032-5899, DOI: 10.1179/003258904225015419 * |
MCCLINTOCK D A ET AL: "Mechanical properties of neutron irradiated nanostructured ferritic alloy 14YWT", JOURNAL OF NUCLEAR MATERIALS, ELSEVIER BV, NL, vol. 386-388, 30 April 2009 (2009-04-30), pages 307 - 311, XP002627786, ISSN: 0022-3115, [retrieved on 20081227], DOI: 10.1016/J.JNUCMAT.2008.12.104 * |
YE ET AL: "Fabrication of metal matrix composites by metal injection molding-A review", JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, ELSEVIER, NL, vol. 200, no. 1-3, 6 November 2007 (2007-11-06), pages 12 - 24, XP022510603, ISSN: 0924-0136, DOI: 10.1016/J.JMATPROTEC.2007.10.066 * |
Also Published As
Publication number | Publication date |
---|---|
DE112011102581A5 (de) | 2013-05-02 |
DE112011102581B4 (de) | 2015-01-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AT521303B1 (de) | Hartmetallpulver für die additive Herstellung | |
EP1523390B1 (de) | Verfahren zur endkonturnahen herstellung von hochporösen met allischen formkörpern | |
DE69907922T2 (de) | Pulvermetallspritzgiessverfahren zum formen eines gegenstandes aus der nickelbasis- superlegierung "hastelloy x" | |
DE4338457C2 (de) | Bauteil aus Metall oder Keramik mit dichter Außenschale und porösem Kern und Herstellungsverfahren | |
DE2351846C2 (de) | Verfahren zur Herstellung von Sinterkörpern aus Superlegierungspulver auf Nickel-Basis | |
EP1469963B1 (de) | Verfahren zur herstellung von gesinterten bauteilen aus einem sinterfähigen material | |
EP2292806B1 (de) | Verfahren zur Herstellung von Bauteilen aus Titan oder Titanlegierung mittels MIM-Technologie | |
AU2003271541B2 (en) | Method for the production of near net-shaped metallic and/or ceramic parts | |
JP2002523629A (ja) | 水性バインダーを用いて作られた金属射出成形パーツの脱バインダー及び焼結方法 | |
EP1470261A1 (de) | Sinterf hige metallpulvermischung zur herstellung gesinterte r bauteile | |
DE60315550T2 (de) | Abreibbarer metallischer oder keramischer Werkstoff; Formkörper, Gehäuse die dieses Material enthalten sowie seine Herstellung | |
CN109576546B (zh) | 一种高强韧性无磁Ti(C,N)基金属陶瓷的制备方法 | |
DE102020109047A1 (de) | Sintercarbidpulver für additive fertigung | |
CN114086078A (zh) | Fe-Mn-Al-C系轻质钢及其制备方法、终端、钢结构件和电子设备 | |
CN116041051A (zh) | 一种应用于3dp打印的造粒粉体及其打印成型方法 | |
DE102011013894A1 (de) | Verfahren zur endformnahen Herstellung von Bauteilen | |
DE112011102581B4 (de) | Verfahren zur Herstellung von Bauteilen, die endformnah aus einer dispersionsverstärkten Eisen- oder Nickelbasislegierung gebildet sind | |
JP4779997B2 (ja) | 焼結体の製造方法 | |
DE3243570C2 (de) | Verfahren zum Herstellen eines dichten polykristallinen Formkörpers aus SiC | |
EP1390321B1 (de) | Metall-keramik-verbundwerkstoff und verfahren zu dessen herstellung | |
DE102006005225B3 (de) | Titanwerkstoff und Verfahren zu seiner Herstellung | |
EP1525330B1 (de) | Verfahren zur herstellung eines bauteils, bauteil und verwendung | |
DE102015224588A1 (de) | Verfahren zum Herstellen eines porösen Formkörpers | |
DE102009008685A1 (de) | Verfahren zum Herstellen eines Bauteils | |
JPH111704A (ja) | 粉体成形方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11736011 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1120111025815 Country of ref document: DE Ref document number: 112011102581 Country of ref document: DE |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: R225 Ref document number: 112011102581 Country of ref document: DE Effective date: 20130502 |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 11736011 Country of ref document: EP Kind code of ref document: A1 |