EP1052305B1 - Materiau metallique présentant une dureté élevée, une resistance élevée à l' usure et une tenacité élevée - Google Patents
Materiau metallique présentant une dureté élevée, une resistance élevée à l' usure et une tenacité élevée Download PDFInfo
- Publication number
- EP1052305B1 EP1052305B1 EP20000890146 EP00890146A EP1052305B1 EP 1052305 B1 EP1052305 B1 EP 1052305B1 EP 20000890146 EP20000890146 EP 20000890146 EP 00890146 A EP00890146 A EP 00890146A EP 1052305 B1 EP1052305 B1 EP 1052305B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- elements
- niobium
- content
- periodic table
- carbon
- 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.)
- Expired - Lifetime
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
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/24—Ferrous alloys, e.g. steel alloys containing chromium with vanadium
-
- 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
Definitions
- the invention relates to a method for alloying control of the solidification kinetics and the matrix composition of carbide-forming metallic melts and to a material preferably produced by the method with high hardness, high wear resistance and high. Toughness.
- Such alloys are state of the art.
- tool steels which include, among others, the elements carbon, vanadium, niobium and aluminum.
- DE 31 44 475 A1 discloses a Schnellarbeits- and tool steel, in addition to other elements 0.3 to 3.0 wt.% Carbon, 0.5 to 3.0 wt.% Silicon, 0.5 to 3.0 wt. % Aluminum 0.5 to 6.0 wt.% Vanadium has.
- the steel in which the vanadium may be partially or completely replaced by zirconium, niobium, hafnium, titanium, tantalum or a mixture thereof preferably has a sum of the contents of silicon and aluminum of about 2% by weight.
- the elements silicon and aluminum in combination should completely or partially replace cobalt and reduce the content of tungsten, vanadium and molybdenum at about the same material quality.
- At least one desired property of materials that stabilize ledeburitically can be particularly promoted.
- a high level of wear resistance can be achieved by alloying by increasing the amount of carbide, but the toughness of the material deteriorates.
- the quality and the usability of the material are characterized by the property profile, which should be formed in accordance with the modern technical requirements of these as possible from each high or advantageous individual properties. It is important for reasons of reliability that the fluctuation range of the property values is as low as possible.
- alloying with aluminum has attempted to substitute expensive elements or to influence the thermal tempering in such a way that the material properties are improved.
- the invention seeks to remedy the situation and sets itself the goal of specifying a method with which the solidification kinetics of carbide-forming metallic Melting technology is controlled such that the microstructure is formed morphologically advantageous with improved matrix properties Furthermore, it is an object of the invention to provide generic metallic materials with high hardness, high wear resistance and high toughness. Specifically, this means the creation of high pressure resistant, especially cold working materials, simultaneously with significantly improved resistance to abrasive wear, increased plastic bending work and flexural strength, and a significantly increased 0.2% compression limit of the material.
- the advantages of the method according to the invention are essentially to be seen in that the solidification kinetics can be influenced by means of the effect-optimized aluminum content in such a way that a primary carbide release and carbide growth is largely suppressed for further cooling, ie that the carbides are eutectically substantially finely globulitic to form the melt.
- the composition of the matrix, in particular its carbon content can be controlled by the respective aluminum concentration, and ultimately the matrix hardness and toughness can be determined. For the first time it was found that it was necessary for a Particularly advantageous high property profile of materials is important to adjust the aluminum content within limits depending on the carbon concentration and the niobium equivalent.
- a morphologically particularly favorable structure is achieved if the effective range factor F has a value between 0.9 and 1.2.
- the further object of the invention is achieved in the case of a metallic material, which is preferably produced according to the abovementioned method, in that the alloy of the elements in% by weight: 0.6 to 1.7 % carbon 0.6 to 1.1 % silicon 0.2 to 0.5 % manganese 7.0 to 11.0 % chrome 2.0 to 3.2 % molybdenum to 1.0 % tungsten to 0.8 % nickel 0.5 to 1.5 % vanadium 0.4 to 0.65 % niobium 0.3 to 2.6 %
- the advantages of the material according to the invention essentially consist in the fact that all mechanical properties and also the resistance to abrasive wear thereof are substantially improved.
- an appropriate adjustment or maintenance of the aluminum content is important for this, because depending on the carbon content and the niobium equivalent depending on the formation of the cast structure and that of the structure of the deformed material.
- that of aluminum is within the limits of 0.3 to 2.6% by weight. certainly.
- Cutting tools with improved service life and the same resistance to breakage are preferably produced when the base of the alloy is formed as a high-speed steel and alloyed with aluminum in the Erfindungsberelchn.
- the advantages can be particularly pronounced in an alloyed cold work tool steel according to the invention.
- the high wear resistance and the high toughness and strength of the material give superior performance of tools made from them.
- a flexural strength of at least 4500 N / mm 2 and a plastic bending stress in the range of 3000 Nmm with a 0.2% compression limit of more than 2600 N / mm 2 of the thermally tempered material can be achieved if the alloy is in% by weight: 1.0 to 1.4 % carbon 0.6 to 1.1 % silicon 0.2 to 0.5 % manganese 7.0 to 11.0 % chrome 2.0 to 3.2 % molybdenum to 1.0 % tungsten to 0.8 % nickel 1.0 to 1.5 % vanadium 0.4 to 0.65 % niobium Aluminum in the present invention dependent limits between 0.64 and 2.0, balance iron and manufacturing-related impurities.
- the mechanical properties and the resistance to abrasive wear can be increased if the alloy has more than 0.5 wt .-% niobium.
- a morphologically favorable structure is a low concentration of the alloy on elements of Group 4 of the Periodic Table and optionally of nitrogen, because compounds of these elements can form effective nuclei for primary carbide precipitation. It is therefore advantageous if the content of elements of group 4 of the periodic table is below 0.24% by weight, preferably below 0.1% by weight, and the nitrogen content is less than 0.01% by weight.
- Table 1 shows the chemical composition of the trial alloy, with the remainder each consisting of iron and impurities caused by melting.
- the alloys 1,2 and 10 are alloys according to the invention and have consistently superior individual properties.
- the plastic bending work of these materials is advantageous at values above 2900Nmm.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Claims (5)
- Procédé de commande en technique d'alliage de la cinétique de solidification et de la composition de la matrice de coulées métalliques à formation de carbure, caractérisé en ce que le métal liquide est fabriqué en étant constitué des éléments en % en poids :
0,6 à 1,7 % de carbone 0,6 à 1,1 % de silicium 0,2 à 0,5 % de manganèse 7,0 à 11,0 % de chrome 2,0 à 3,2 % de molybdène jusqu'à 1,0 % de tungstène jusqu'à 0,8 % de nickel 0,5 à 1,5 % de vanadium 0,4 à 0,55 % de niobium
des éléments au choix du groupe 4 de la table périodique dans une mesure inférieure à 0,24% en poids,
le reste étant du fer ainsi que des impuretés dues à la fabrication et en fonction de la teneur en carbone et de la teneur en éléments du groupe 5 de la table périodique, est allié à jusqu'à 4,6% en poids d'aluminium dans une concentration de 0,3 à 2,6% en poids de Al, de telle sorte que la teneur en aluminium est égale à la teneur en carbone, multipliée par l'équivalent de niobium AN, multipliée par le facteur de champ d'action F - Matériau métallique, fabriqué notamment d'après le procédé selon les revendications précédentes, présentant une dureté élevée, une résistance élevée à l'usure et une ténacité élevée, caractérisé en ce que l'alliage est constitué des éléments en % en poids :
0,6 à 1,7 % de carbone 0,6 à 1,1 % de silicium 0,2 à 0,5 % de manganèse 7,0 à 11,0 % de chrome 2,0 à 3,2 % de molybdène jusqu'à 1,0 % de tungstène jusqu'à 0,8 % de nickel 0,5 à 1,5 % de vanadium 0,4 à 0,55 % de niobium 0,3 à 2,6 % d'aluminium
des éléments au choix du groupe 4 de la table périodique dans une mesure inférieure à 0,24% en poids,
et le reste de fer ainsi que d'impuretés dues à la fabrication et l'aluminium comprend en fonction de la teneur en carbone ainsi que de la teneur en vanadium, en niobium et en tantale une concentration selon la formule : - Matériau selon l'une quelconque des revendications 3 ou 4, caractérisé en ce que la teneur en éléments du groupe 4 de la table périodique est inférieure à 0, 1 % en poids.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI200030850T SI1052305T1 (sl) | 1999-05-10 | 2000-05-09 | Kovinski material z visoko trdoto, visoko odpornostjo proti obrabi in visoko zilavostjo |
AT00890146T ATE318941T1 (de) | 1999-05-10 | 2000-05-09 | Metallischer werkstoff mit hoher härte, hohem verschleisswiderstand und hoher zähigkeit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT84299 | 1999-05-10 | ||
AT84299A AT407648B (de) | 1999-05-10 | 1999-05-10 | Metallischer werkstoff mit hoher härte, hohem verschleisswiderstand und hoher zähigkeit |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1052305A2 EP1052305A2 (fr) | 2000-11-15 |
EP1052305A3 EP1052305A3 (fr) | 2002-04-17 |
EP1052305B1 true EP1052305B1 (fr) | 2006-03-01 |
Family
ID=3501032
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20000890146 Expired - Lifetime EP1052305B1 (fr) | 1999-05-10 | 2000-05-09 | Materiau metallique présentant une dureté élevée, une resistance élevée à l' usure et une tenacité élevée |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1052305B1 (fr) |
AT (1) | AT407648B (fr) |
DE (1) | DE50012310D1 (fr) |
DK (1) | DK1052305T3 (fr) |
ES (1) | ES2255967T3 (fr) |
HK (1) | HK1034541A1 (fr) |
PT (1) | PT1052305E (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100396405C (zh) * | 2006-02-28 | 2008-06-25 | 天津大学 | 能够使熔覆层产生压缩应力的合金粉 |
EP4357471A1 (fr) * | 2022-10-20 | 2024-04-24 | Höganäs Germany GmbH | Alliages nickel-chrome |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE900466C (de) * | 1943-02-14 | 1953-12-28 | Stahlwerke Bochum A G | Zyanierte Schneidwerkzeuge |
GB787951A (en) * | 1953-01-05 | 1957-12-18 | William Jessop And Sons Ltd | Improvements in or relating to alloy steels |
SE8106207L (sv) * | 1980-11-10 | 1982-05-11 | Teledyne Ind | Snabbstal och andra verktygsstal |
SU1002395A1 (ru) * | 1981-10-16 | 1983-03-07 | Предприятие П/Я М-5481 | Быстрорежуща сталь |
SU1342938A2 (ru) * | 1986-05-05 | 1987-10-07 | Предприятие П/Я М-5481 | Быстрорежуща сталь |
AT393387B (de) * | 1989-10-23 | 1991-10-10 | Boehler Gmbh | Kaltarbeitsstahl mit hoher druckfestigkeit und verwendung dieses stahles |
US5458703A (en) * | 1991-06-22 | 1995-10-17 | Nippon Koshuha Steel Co., Ltd. | Tool steel production method |
JP2817587B2 (ja) * | 1993-09-17 | 1998-10-30 | 住友金属工業株式会社 | ボイラ用耐摩耗複層鋼管およびその製造方法 |
JPH10298710A (ja) * | 1997-04-28 | 1998-11-10 | Daido Steel Co Ltd | 表面改質用工具鋼 |
JPH10330894A (ja) * | 1997-06-05 | 1998-12-15 | Daido Steel Co Ltd | 低合金高速度工具鋼およびその製造方法 |
EP0903420A3 (fr) * | 1997-09-17 | 1999-12-15 | Latrobe Steel Company | Aciers rapides exempts de cobalt |
-
1999
- 1999-05-10 AT AT84299A patent/AT407648B/de not_active IP Right Cessation
-
2000
- 2000-05-09 DE DE50012310T patent/DE50012310D1/de not_active Expired - Lifetime
- 2000-05-09 EP EP20000890146 patent/EP1052305B1/fr not_active Expired - Lifetime
- 2000-05-09 ES ES00890146T patent/ES2255967T3/es not_active Expired - Lifetime
- 2000-05-09 DK DK00890146T patent/DK1052305T3/da active
- 2000-05-09 PT PT00890146T patent/PT1052305E/pt unknown
-
2001
- 2001-05-15 HK HK01103379A patent/HK1034541A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DK1052305T3 (da) | 2006-07-03 |
EP1052305A3 (fr) | 2002-04-17 |
ES2255967T3 (es) | 2006-07-16 |
AT407648B (de) | 2001-05-25 |
PT1052305E (pt) | 2006-07-31 |
HK1034541A1 (en) | 2001-10-26 |
EP1052305A2 (fr) | 2000-11-15 |
ATA84299A (de) | 2000-09-15 |
DE50012310D1 (de) | 2006-04-27 |
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