DE749893C - Austenitic manganese steels with increased nitrogen content - Google Patents

Austenitic manganese steels with increased nitrogen content

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Publication number
DE749893C
DE749893C DEK144222D DEK0144222D DE749893C DE 749893 C DE749893 C DE 749893C DE K144222 D DEK144222 D DE K144222D DE K0144222 D DEK0144222 D DE K0144222D DE 749893 C DE749893 C DE 749893C
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DE
Germany
Prior art keywords
manganese steels
austenitic manganese
nitrogen content
steels
austenitic
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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
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DEK144222D
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German (de)
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Publication date
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Priority to DEK144222D priority Critical patent/DE749893C/en
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Publication of DE749893C publication Critical patent/DE749893C/en
Expired legal-status Critical Current

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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
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Description

Austenitische Manganstähle mit erhöhtem Stickstoffgehalt Die als austenitische Manganhartstähle bekannten Stähle mit etwa Iz bis ao% Mangan haben infolge ihres hohen Verschleißwiderstandes und ihrer hervorragenden Zähigkeit eine weitgehende Verwendung gefunden. Wegen ihrer niedrigen Streckgrenze blieben die austenitischen Manganstähle jedoch bisher von großen Verwendungsgebieten, insbesondere im Maschinenbau, ausgeschlossen. Es ist daher versucht worden, durch Hinzufügung von Legierungselementen, wie Chrom, Silicium, Kupfer, Molybdän, Wolfram u. a., das Streckgrenzenverhältnis und die Bearbeitbarkeit von Manganhartstählen zu erhöhen, ohne dlaß jedoch diese Versuche von einem nennenswerten Erfolg begleitet waren.Austenitic manganese steels with increased nitrogen content Die as austenitic Manganese steels known steels with about Iz to ao% manganese have as a result of their high wear resistance and their excellent toughness an extensive one Use found. Because of their low yield strength, the austenitic ones remained Manganese steels, however, have so far been used in large areas, especially in mechanical engineering, locked out. Attempts have therefore been made, by adding alloying elements, such as chromium, silicon, copper, molybdenum, tungsten and others, the yield strength ratio and to increase the machinability of manganese steels without, however, reducing them Attempts were accompanied by a notable success.

Es wurde nun festgestellt, daß es möglich ist, die Streckgrenze bei austenitischen Manganstählen ganz. erheblich zu steigern durch einen Stickstoffgehalt, der über o,o3 % liegt. Ess ist bekannt, Stählen mit 5 bis 30% Mangan kornverfeinernde Zusätze, wie Wolfram, Vanadim, Kobalt, Kupfer, Titan, Tantal, Bor, Zinn und Stickstoff, zuzugeben. Andererseits ist es aber auch bekannt, daß ein grobkörniger Stahl etwa die gleiche Streckgrenze besitzt wie ein feinkörniger Stahl. Gegenstand der Erfindung ist die Verwendung von austenitischen Manganstählen üblicher Zusammensetzung, jedoch mit einem Stickstoffgehalt über o,o3 % als Werkstoff für Gegenstände, die eine höhere Streckgrenze besitzen sollen, als sie entsprechende austenitische Manganstähle mit niedrigerem Stickstoffgehalt aufweisen.It has now been found that it is possible to reduce the yield strength at austenitic manganese steels whole. to be increased significantly by a nitrogen content, which is above 0.03%. Ess is known to grain-refine steels with 5 to 30% manganese Additives such as tungsten, vanadim, cobalt, copper, titanium, tantalum, boron, tin and nitrogen, admit. On the other hand, it is also known that a coarse-grained steel about has the same yield strength as fine-grained steel. Subject of the invention is the use of austenitic manganese steels of common composition, however with a nitrogen content of over 0.03% as a material for objects that have a higher Yield strength should have than they are equivalent to austenitic manganese steels have a lower nitrogen content.

Die Erhöhung der Streckgrenze durch den erhöhten Stickstoffgehalt tritt auch ein, wenn die austenitischen Manganstähle weitere Legierungselemente, wie Chrom, Silicium, Kupfer, Nickel, Molybdän, Wolfram u. a., in den bisher üblichen Mengen, d. h. bis etwa 3%, enthalten. Das Legieren mit Stickstoff kann durch Zugabe schwer zersetzlicher Nitride, z. B. von Chrom-, Silicium-, Aluminium- oder ähnlichen Nitriden, und/oder durch Zugabe leicht zersetzlicher Stickstoffverbindungen, wie z. B. Kalkstickstoff, zur flüssigen Schmelze vorgenommen «-erden.The increase in the yield point due to the increased nitrogen content also occurs when the austenitic manganese steels contain additional alloying elements, such as chromium, silicon, copper, nickel, molybdenum, tungsten and others, in the usual ones Quantities, d. H. up to about 3%. Alloying with nitrogen can be done by adding difficult to decompose nitrides, e.g. B. of chromium, silicon, aluminum or the like Nitrides, and / or by adding easily decomposable nitrogen compounds, such as z. B. calcium cyanamide, made to the liquid melt «-erden.

Claims (2)

PATENTANSPRÜCHE r. Die Verwendung von austenitischen Manganstählen üblicher Zusammensetzung, jedoch- mit über 0,030%o Stickstoff als Werlstoff für Gegenstände, die eine höhere Streckgrenze besitzen sollen, als sie entsprechende austenitische Manganstähle mit niedrigerein Stickstoffgehalt aufweisen. PATENT CLAIMS r. The use of austenitic manganese steels usual composition, but with over 0.030% o nitrogen than Material for objects that should have a higher yield strength than the corresponding one have austenitic manganese steels with a lower nitrogen content. 2. Die Verwendung von im Anspruch I genannten austenitischen Manganstählen. die jedoch zusätzlich noch weitere Legerungseleinente, wie Chrom, Silicium. Kupfer, Nickel, Molybdän, Wolfram, einz1ne, oder zu mehreren bis etwa 37%, enthalten, für den Zweck nach Anspruch I. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik sind im Frteilungsverfahren folgende Druckschriften in Betracht gezogen worden: deutsche Patentschrift ...... Nr. 602 I55; französische Patentschriften - 7o5 39o, 739 498, 79o 98o Houdremont, Einführung in die Sonderstahlkunde (I935) S. 49o und 5o9; Chemisches Zentrallblatt«, I933, I, I838 1t. I935, 1, Il4: >=Stahl und Eisen«, 1936, S. 1=j8.2. The use of austenitic manganese steels mentioned in claim I. However, there are also other elements such as chromium and silicon. Copper, nickel, molybdenum, tungsten, single or several to about 37%, for the purpose according to claim I. To distinguish the subject of the application from the prior art, the following publications have been considered in the division process: German patent specification ... ... No. 602 I55; French patents - 7o5 39o, 739 498, 79o 98o Houdremont, Introduction to Special Steel Studies (1935) pp. 49o and 5o9; Chemisches Zentrallblatt «, 1933, I, 1838 1t. 1935, 1, Il4:> = Stahl und Eisen ", 1936, p. 1 = j8.
DEK144222D 1936-10-31 1936-10-31 Austenitic manganese steels with increased nitrogen content Expired DE749893C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEK144222D DE749893C (en) 1936-10-31 1936-10-31 Austenitic manganese steels with increased nitrogen content

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK144222D DE749893C (en) 1936-10-31 1936-10-31 Austenitic manganese steels with increased nitrogen content

Publications (1)

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DE749893C true DE749893C (en) 1944-12-08

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DEK144222D Expired DE749893C (en) 1936-10-31 1936-10-31 Austenitic manganese steels with increased nitrogen content

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952514A1 (en) * 1978-12-28 1980-07-17 Us Energy FERRITIC FE-MN ALLOY

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR705390A (en) * 1929-12-09 1931-06-05 Ver Stahlwerke Ag Process for improving the tenacity of a low-carbon steel containing nitrogen, alloyed or not, produced by current processes
FR739498A (en) * 1931-07-29 1933-01-12 Electro Metallurg Co Improvements in special steels
DE602155C (en) * 1933-06-11 1934-09-01 Bamberger W Process for the production of crushing jaws from austenitic manganese steel

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR705390A (en) * 1929-12-09 1931-06-05 Ver Stahlwerke Ag Process for improving the tenacity of a low-carbon steel containing nitrogen, alloyed or not, produced by current processes
FR739498A (en) * 1931-07-29 1933-01-12 Electro Metallurg Co Improvements in special steels
DE602155C (en) * 1933-06-11 1934-09-01 Bamberger W Process for the production of crushing jaws from austenitic manganese steel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2952514A1 (en) * 1978-12-28 1980-07-17 Us Energy FERRITIC FE-MN ALLOY
DE2952514C2 (en) * 1978-12-28 1987-05-07 United States Department Of Energy, Washington, D.C., Us

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