DE1247668B - Process for the production of dispersion and precipitation hardened metallic materials - Google Patents
Process for the production of dispersion and precipitation hardened metallic materialsInfo
- Publication number
- DE1247668B DE1247668B DED47384A DED0047384A DE1247668B DE 1247668 B DE1247668 B DE 1247668B DE D47384 A DED47384 A DE D47384A DE D0047384 A DED0047384 A DE D0047384A DE 1247668 B DE1247668 B DE 1247668B
- Authority
- DE
- Germany
- Prior art keywords
- hardened
- particles
- melt
- dispersion
- precipitation
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/02—Making ferrous alloys by powder metallurgy
- C22C33/0257—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements
- C22C33/0278—Making ferrous alloys by powder metallurgy characterised by the range of the alloying elements with at least one alloying element having a minimum content above 5%
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/062—Fibrous particles
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
-
- 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
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0425—Copper-based alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
-
- 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
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/248—Thermal after-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
BUNDESREPUBLIK DEUTSCHLANDFEDERAL REPUBLIC OF GERMANY
DEUTSCHESGERMAN
PATENTAMTPATENT OFFICE
AUSLEGESCHRIFTEDITORIAL
Int. CL:Int. CL:
C22cC22c
Deutsche Kl.: 40 b-1/02German class: 40 b-1/02
Nummer: 1247 668Number: 1247 668
Aktenzeichen: D 47384 VI a/40 bFile number: D 47384 VI a / 40 b
Anmeldetag: 28. Mai 1965 Filing date: May 28, 1965
Auslegetag: 17. August 1967Opened on: August 17, 1967
Es ist bekannt, durch in der Schmelze gebildete Reaktionsprodukte, ζ. B. nach dem sogenannten Schmelzsättigungsverfahren durch eine flüssig-flüssig-Reaktion beim Mischen von zwei Schmelzen, die je ein Element einer zu bildenden Verbindung enthalten, eine Dispersionshärtung einer metallischen Grundmasse zu erzielen, doch hat sich gezeigt, daß man infolge der auftretenden Wännetönungen nach diesem Verfahren oft nur zu relativ grobkörnigen Dispersionen kommt.It is known that reaction products formed in the melt, ζ. B. after the so-called Melt saturation process through a liquid-liquid reaction when mixing two melts, each contain an element of a compound to be formed, a dispersion hardening of a metallic To achieve basic mass, but it has been shown that as a result of the occurring tinting this process often only results in relatively coarse-grained dispersions.
Demgegenüber soll nach dem Verfahren gemäß der Erfindung von einer homogenen metallischen Schmelze ausgegangen werden, aus der sich nacheinander beim Abkühlen mehrere verschiedene feste Phasen ausscheiden können, von denen die sich zuletzt ausscheidende eine Mischkristallphase ist, die normalerweise die zuvor primär und eventuell auch sekundär ausfallende Qi) Phase Qi) umschließt. In contrast, the method according to the invention should be based on a homogeneous metallic melt, from which several different solid phases can be separated out one after the other as it cools, of which the last separating phase is a mixed crystal phase, which is normally the Qi, which was previously primarily and possibly also secondary ) Phase Qi) encloses.
Es ist nun erfindungsgemäß vorgesehen, eine solche Schmelze, in der zunächst alle diese Teilchen gelöst sind, mit möglichst hoher Geschwindigkeit um möglichst feine Primär- bzw. Sekundärausscheidungen von unter 1 μ, vorzugsweise unter 0,2 μ, Korngröße zu erhalten, zumindest so weit abzukühlen, bis auch die sich zuletzt ausscheidende Mischkristallphase gerade erstarrt ist, und die Schmelze zu diesem Zweck durch aus der Pulverherstellung an sich bekannte Verfahren wie Durchlaufenlassen oder Durchpressen durch Düsenanordnungen weitgehend zu unterteilen, im Anschluß an diese Unterteilungs-Abschreck-Unterkühlungs-Behandlung die Teilchen wieder zu einer kompakten Masse zu vereinigen, z. B. durch Strangpressen, Warm- oder Kaltwalzen, und schließlich die bereits durch Dispersion gehärtete Grundmasse noch weiter nach dem Verfahren der Ausscheidungshärtung durch Anlassen nach oder ohne vorheriges Lösungsglühen unterhalb der SoIidustemperatur zu verfestigen.The invention now provides such a melt in which all of these particles are initially dissolved are, at the highest possible speed, around the finest possible primary or secondary precipitations of less than 1 μ, preferably less than 0.2 μ, to obtain grain size, at least to cool down until too the mixed crystal phase that separates out has just solidified, and the melt to this Purpose by processes known per se from powder production, such as letting through or pressing through largely subdivided by nozzle assemblies following this subdivision-quench-supercooling treatment to reunite the particles into a compact mass, e.g. B. by extrusion, hot or cold rolling, and Finally, the base material, which has already been hardened by dispersion, is carried out using the method of Precipitation hardening by tempering after or without prior solution annealing below the solids temperature to solidify.
Wird ein wie beschrieben aufgebauter Werkstoff in dieser Weise behandelt, so erfährt er nacheinander
eine Dispersionshärtung durch Ausscheidung von extrem feinen Teilchen im schmelzflüssigen Zustand
und eine Ausscheidungshärtung (Aushärtung) durch Ausscheidung von feinen Teilchen im festen Zustand
bzw. es laufen die bekannten die Ausscheidung vorbereitenden Vorgänge ab. Es kann sich bei der Dispersions-
und bei der Ausscheidungshärtung um Ausscheidungen von Teilchen der gleichen Phase Qi)
gleicher oder verschiedener Zusammensetzung oder um Teilchen verschiedener Phasen handeln. Es ist
auch durchaus eine Keimwirkung der dispergierten Verfahren zur Herstellung dispersions- und
ausscheidungsgehärteter metallischer
WerkstoffeIf a material constructed as described is treated in this way, it experiences successively a dispersion hardening through the precipitation of extremely fine particles in the molten state and a precipitation hardening (hardening) through the precipitation of fine particles in the solid state or the known processes that prepare the precipitation run away. The dispersion hardening and the precipitation hardening can be precipitation of particles of the same phase Qi) of the same or different composition or of particles of different phases. It is also quite a germination effect of the dispersed method of preparation and dispersion
Precipitation hardened metallic
Materials
Anmelder:Applicant:
Deutsche Gold- und Silber-ScheideanstaltGerman gold and silver refinery
vormals Roessler,formerly Roessler,
Frankfurt/M., Weißfrauenstr. 9Frankfurt / M., Weißfrauenstr. 9
Als Erfinder benannt:Named as inventor:
Dr. phil. Walter Dannöhl, Kelkheim (Taunus)Dr. phil. Walter Dannöhl, Kelkheim (Taunus)
Phase für den nachfolgenden Aushärtungsvorgang im festen Zustand möglich.Phase for the subsequent hardening process in the solid state possible.
Bei der Durchführung des Verfahrens hat sich als besonders vorteilhaft herausgestellt, die Schmelze unter Ausnutzung einer Druckdifferenz durch eine vorzugsweise vorgeheizte keramische Düsenanordnung zu pressen, sie dabei zu unterteilen und sie durch ein unmittelbar unterhalb der Düsen angebrachtes Kühlsystem unter Verwendung eines flüssigen oder gasförmigen Kühlmittels genügend stark zu unterkühlen und feinkristallin erstarren zu lassen. Die erhaltenen Pulver- oder Faserteilchen werden aufgefangen, getrocknet und verpreßt und in bekannter Weise durch Abschrecken und Anlassen ausgehärtet oder aber beispielsweise unter Verwendung des gasförmigen Kühlmittels, das gegebenenfalls auch noch mit Pulver- oder Faserteilchen reagieren kann, als Trägerwerkstoff in einen vorgewärmten Ofen bzw. direkt in eine Strangpresse oder Walze übergeführt und dort kompaktiert, wobei sich vorteilhaft unmittelbar die Aushärtungsbehandlung anschließt.When carrying out the process, it has been found to be particularly advantageous to use the melt using a pressure difference through a preferably preheated ceramic nozzle arrangement to press, subdividing them and using an attached directly below the nozzles Cooling system using a liquid or gaseous coolant sufficiently strong to undercool and solidify in fine crystalline form. The powder or fiber particles obtained are collected, dried and pressed and hardened in a known manner by quenching and tempering or, for example, using the gaseous coolant, which may also be used can still react with powder or fiber particles as a carrier material in a preheated furnace or transferred directly to an extruder or roller and compacted there, which is advantageous the hardening treatment immediately follows.
Als Beispiel für die beschriebene Überlagerung von Dispersions- und Ausscheidungshärtung kann etwa eine Kupferlegierung mit 5% Eisen und 5% Kobalt dienen, die von 14000C schnell abgekühlt und unterteilt wird. Unmittelbar vor, während oder unmittelbar nach dem Durchtritt durch das Düsensystem scheiden sich aus der Schmelze bzw. innerhalb der Schmelztröpfchen feinste feste Eisen-Kobalt-Mischkristallteilchen aus. Die Grundmasse der erstarrten Pulver ist dann eine kupferreiche Mischkristallphase, welche die ausgeschiedenen y-Eisen-A copper alloy with 5% iron and 5% cobalt, which is rapidly cooled from 1400 ° C. and subdivided, can serve as an example of the described superimposition of dispersion and precipitation hardening. Immediately before, during or immediately after passing through the nozzle system, very fine solid iron-cobalt mixed crystal particles separate from the melt or within the melt droplets. The basic mass of the solidified powder is then a copper-rich mixed crystal phase, which contains the precipitated y-iron
709 637/550709 637/550
Claims (3)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED47384A DE1247668B (en) | 1965-05-28 | 1965-05-28 | Process for the production of dispersion and precipitation hardened metallic materials |
CH658066A CH472501A (en) | 1965-05-28 | 1966-05-06 | Process for the production of dispersion and precipitation hardened metallic materials |
GB22618/66A GB1152695A (en) | 1965-05-28 | 1966-05-20 | A Process for the Production of Dispersion- and Precipitation Hardened Metallic Materials |
NL6607125A NL6607125A (en) | 1965-05-28 | 1966-05-24 | |
FR63350A FR1481531A (en) | 1965-05-28 | 1966-05-27 | Process for the manufacture of metallic materials which have undergone quenching in the state of dispersion and precipitation, as well as products conforming to those obtained by the present or similar process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED47384A DE1247668B (en) | 1965-05-28 | 1965-05-28 | Process for the production of dispersion and precipitation hardened metallic materials |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1247668B true DE1247668B (en) | 1967-08-17 |
Family
ID=7050398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED47384A Pending DE1247668B (en) | 1965-05-28 | 1965-05-28 | Process for the production of dispersion and precipitation hardened metallic materials |
Country Status (4)
Country | Link |
---|---|
CH (1) | CH472501A (en) |
DE (1) | DE1247668B (en) |
GB (1) | GB1152695A (en) |
NL (1) | NL6607125A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4430115A (en) | 1980-05-27 | 1984-02-07 | Marko Materials, Inc. | Boron stainless steel powder and rapid solidification method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5264022A (en) * | 1992-05-05 | 1993-11-23 | Teledyne Industries, Inc. | Composite shot |
-
1965
- 1965-05-28 DE DED47384A patent/DE1247668B/en active Pending
-
1966
- 1966-05-06 CH CH658066A patent/CH472501A/en not_active IP Right Cessation
- 1966-05-20 GB GB22618/66A patent/GB1152695A/en not_active Expired
- 1966-05-24 NL NL6607125A patent/NL6607125A/xx unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4430115A (en) | 1980-05-27 | 1984-02-07 | Marko Materials, Inc. | Boron stainless steel powder and rapid solidification method |
Also Published As
Publication number | Publication date |
---|---|
CH472501A (en) | 1969-05-15 |
GB1152695A (en) | 1969-05-21 |
NL6607125A (en) | 1966-11-29 |
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