AT146720B - Manufacture of objects that must have special strength properties, in particular high vibration resistance and / or should have high resistance to becoming brittle due to intergranular corrosion. - Google Patents
Manufacture of objects that must have special strength properties, in particular high vibration resistance and / or should have high resistance to becoming brittle due to intergranular corrosion.Info
- Publication number
- AT146720B AT146720B AT146720DA AT146720B AT 146720 B AT146720 B AT 146720B AT 146720D A AT146720D A AT 146720DA AT 146720 B AT146720 B AT 146720B
- Authority
- AT
- Austria
- Prior art keywords
- resistance
- objects
- manufacture
- strength properties
- intergranular corrosion
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 238000005260 corrosion Methods 0.000 title claims 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052804 chromium Inorganic materials 0.000 claims description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 6
- 239000011651 chromium Substances 0.000 claims description 6
- -1 chromium-nickel Chemical compound 0.000 claims description 6
- 230000001264 neutralization Effects 0.000 claims description 6
- 229910052759 nickel Inorganic materials 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 239000011572 manganese Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000010791 quenching Methods 0.000 claims description 3
- 230000000171 quenching Effects 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium(0) Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229920001098 polystyrene-block-poly(ethylene/propylene) Polymers 0.000 description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
Description
<Desc/Clms Page number 1>
Herstellung von Gegenständen, die besondere Festigkeitseigenschaften, insbesondere eine hohe
Bei der Verwendung von chemischneutralen austenitischen Chromnickelstahllegierungen, die etwa 6-40% Chrom, 40-4% Nickel und bis zu höchstens 1% Kohlenstoff enthalten, zur Herstellung von Maschinenteilen, die hohen Schwingungsbeanspruchungen ausgesetzt sind (z. B. Wellen, Turbinenschaufeln), zeigt sich der Übelstand, dass diese Gegenstände nur eine verhältnismässig kleine Schwingungfestigkeit aufweisen.
Versuche haben nun ergeben, dass an sich bekannte chemischneutrale Chromnickelstahllegierungen mit einem Zusatz von etwa 0'3-5% Silizium, Titan, Vanadium, Molybdän, Mangan oder Aluminium, einzeln odergemischt, die ein Gefüge aufweisen, das neben unmagnetischen Austenitkörnerneinen ausgeprägten magnetischen Sonderbestandteilenthält, eine wesentlich höhere Schwingungsfestigkeit besitzen. So hat z. B. eine Stahllegierung mit etwa 0'13% Kohlenstoff, 1% Silizium, 0-73% Mangan, 9-7% Nickel, 17-9% Chrom und 2-2% Titan nach einem Abschrecken von 10500 C in Wasser das aus der Fig. 1 ersichtliche 500fach vergrösserte Gefüge.
In der unmagnetischen austenitischen Grundmasse sind Kristalle aus magnetischem, 0- Eisen enthaltenden Sonderbestandteil eingebettet. Das Gefüge derselben Stahllegierung nach einem Abschrecken von 950 C in Wasser ist in Fig. 2 dargestellt ; auch hier ist in die austenitische (nichtmagnetische) Grundmasse viel starkmagnetisches -0- Eisen enthaltender Sonderbestandteil in Zeilen eingebettet. Entsprechende, eine nichtmagnetische austenitische Grundmasse und einen magnetischen, 8-Eisen enthaltenden Sonderbestandteil aufweisende Gefügebilder zeigen die Fig. 3 und 4, die das Gefüge einer bei 1150 bzw. 950 C in Wasser abgeschreckten Stahllegierung mit 0-12% Kohlenstoff, 2-13% Silizium, 0-63% Mangan, 7-08% Nickel und 21-4% Chrom wiedergeben.
Chemischneutrale Chromniekelstahllegierungen, die derartige Kristalle aus magnetischem Sonderbestandteil enthalten, besitzen jedoch nicht nur eine ausgezeichnete Schwingungsfestigkeit, sie sind vielmehr reinaustenitischen Legierungen auch bezüglich der übrigen Festigkeitseigenschaften überlegen. So hat z.
B. der Chromnickelstahl mit 0-13% Kohlenstoff, 9-7% Nickel und 17-9% Chrom in reinauste-
EMI1.1
EMI1.2
<tb>
<tb> Se, <SEP> h-wingungsbiegefestigkeit <SEP> 20 <SEP> /) <SEP> tnm
<tb> Streckgrenze <SEP> ..........................................................25 <SEP> kg/mm2
<tb> Zugfestigkeit <SEP> 60 <SEP> kg/mm2
<tb>
Ein chemischneutraler Stahl mit denselben Gehalten an Kohlenstoff, Nickel und Chrom, der jedoch einen oder mehrere der genannten Zusätze enthält und Kristalle aus magnetischem, 3-Eisen enthaltenden Sonderbestandteil (Fig. 1 und 2) aufweist, zeichnet sich dagegen durch folgende, wesentlich höhere Festigkeitswerte aus :
EMI1.3
<tb>
<tb> Schwingungsbiegefestigkeit <SEP> 50 <SEP> /t <SEP> ? <SEP> M
<tb> Streckgrenze <SEP> 60 <SEP> kg/mm2
<tb> Zugfestigkeit <SEP> ..........................................................78 <SEP> kg/mm2
<tb>
Bei Verwendung von derartigen Sonderbestandteil enthaltenden chemischneutralen Chromnickelstahllegierungen zeigt sich ausserdem der Vorteil, dass diese Legierungen und die aus diesen hergestellten Gegenstände die nachteilige Eigenschaft des Büchigwerdens nicht besitzen, die den reinaustenitischen Chromnickelstahllegierungen eigen ist, wenn sie bei der Herstellung oder im Betriebe (z. B. beim Zu- sammenschweissen) einer, einer Anlassbehandlung gleichkommenden Erwärmung auf 500-900 C und dem Angriff korrodierender Agentien ausgesetzt werden.
Besonders günstig ist es unter diesem Gesichtspunkt, das Entstehen des Sonderbestandteiles durch Zugabe von Vanadium oder Titan zu bewirken, denn diese Elemente bilden mit dem Kohlenstoff und Stickstoff der Legierungen sehr stabile chemische Verbindungen, die ein Brüchigwerden der Legierungen beim Angriff korrodierender Agentien nach oder während einer Erwärmung auf etwa 500-9000 C praktisch ausschalten.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Manufacture of objects that have special strength properties, especially high
When using chemically neutral austenitic chromium-nickel steel alloys, which contain about 6-40% chromium, 40-4% nickel and up to a maximum of 1% carbon, for the manufacture of machine parts that are exposed to high vibration loads (e.g. shafts, turbine blades), there is the disadvantage that these objects only have a relatively low vibration resistance.
Tests have now shown that chemically neutral chromium-nickel steel alloys known per se with an addition of about 0.3-5% silicon, titanium, vanadium, molybdenum, manganese or aluminum, individually or mixed, which have a structure that contains a pronounced magnetic special component in addition to non-magnetic austenite grains, have a much higher vibration resistance. So has z. B. a steel alloy with about 0.13% carbon, 1% silicon, 0-73% manganese, 9-7% nickel, 17-9% chromium and 2-2% titanium after quenching at 10500 C in water that from the Fig. 1 visible structure enlarged 500 times.
In the non-magnetic austenitic matrix, crystals made of a magnetic special component containing O-iron are embedded. The structure of the same steel alloy after quenching at 950 C in water is shown in FIG. 2; Here too, in the austenitic (non-magnetic) base mass, a lot of strongly magnetic -0- iron-containing special component is embedded in rows. Corresponding microstructure diagrams with a non-magnetic austenitic base material and a magnetic special component containing 8-iron are shown in FIGS. 3 and 4, which show the structure of a steel alloy quenched in water at 1150 and 950 C with 0-12% carbon, 2-13% Represent silicon, 0-63% manganese, 7-08% nickel and 21-4% chromium.
Chemically neutral stainless steel alloys that contain such crystals made of special magnetic constituents not only have excellent vibration resistance, they are also superior to purely austenitic alloys with regard to the other strength properties. So has z.
B. the chromium-nickel steel with 0-13% carbon, 9-7% nickel and 17-9% chromium in pure auste-
EMI1.1
EMI1.2
<tb>
<tb> Se, <SEP> flexural flexural strength <SEP> 20 <SEP> /) <SEP> tnm
<tb> Yield strength <SEP> ........................................... ............... 25 <SEP> kg / mm2
<tb> tensile strength <SEP> 60 <SEP> kg / mm2
<tb>
A chemically neutral steel with the same contents of carbon, nickel and chromium, but which contains one or more of the additives mentioned and crystals of a magnetic special component containing 3-iron (FIGS. 1 and 2), is characterized by the following, significantly higher strength values out :
EMI1.3
<tb>
<tb> Vibration flexural strength <SEP> 50 <SEP> / t <SEP>? <SEP> M
<tb> Yield strength <SEP> 60 <SEP> kg / mm2
<tb> tensile strength <SEP> ........................................... ............... 78 <SEP> kg / mm2
<tb>
When using chemically neutral chromium-nickel steel alloys containing such special components, there is also the advantage that these alloys and the objects made from them do not have the disadvantageous property of becoming bulky, which is inherent in the purely austenitic chromium-nickel steel alloys when they are used during manufacture or in the factory (e.g. . When welding together) a tempering treatment equivalent to heating to 500-900 C and the attack of corrosive agents.
From this point of view, it is particularly favorable to create the special component by adding vanadium or titanium, because these elements form very stable chemical compounds with the carbon and nitrogen of the alloys, which make the alloys brittle when corrosive agents attack or during a Practically switch off heating to around 500-9000 C.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Publications (1)
Publication Number | Publication Date |
---|---|
AT146720B true AT146720B (en) | 1936-08-10 |
Family
ID=2728
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT146720D AT146720B (en) | 1931-06-23 | Manufacture of objects that must have special strength properties, in particular high vibration resistance and / or should have high resistance to becoming brittle due to intergranular corrosion. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT146720B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1222266B (en) * | 1963-01-05 | 1966-08-04 | Bofors Ab | Use of a corrosion-resistant steel alloy as a material for easily weldable objects |
DE1224512B (en) * | 1960-02-02 | 1966-09-08 | Atomic Energy Authority Uk | Use of an austenitic steel alloy as a material for nuclear reactor components and process for its manufacture |
DE1230232B (en) * | 1959-06-24 | 1966-12-08 | Aktienbolaget Bofors | Use of a corrosion-resistant steel alloy as a material for easily weldable objects |
DE1233148B (en) * | 1964-07-13 | 1967-01-26 | Int Nickel Ltd | Use of a martensite hardenable steel alloy for pressure and impact resistant objects |
DE1239109B (en) * | 1963-06-07 | 1967-04-20 | Int Nickel Ltd | Use of a martensite-hardenable steel alloy as a material for pressure and impact-resistant objects |
DE1264074B (en) * | 1963-01-28 | 1968-03-21 | United States Steel Corp | Use of a martensite-hardened steel as a material for objects that have to be resistant to stress corrosion cracking in a chloride-containing atmosphere |
DE1294032B (en) * | 1963-10-14 | 1969-04-30 | Allegheny Ludlum Steel | Martensitic, heat-treatable, stainless steel |
DE1458331B1 (en) * | 1963-10-14 | 1970-05-21 | Allegheny Ludlum Steel | Use of a martensitic, stainless steel alloy as a material for welded objects |
DE1458330A1 (en) * | 1963-08-02 | 1972-03-23 | Armco Steel Corp | Stainless steel |
-
1931
- 1931-06-23 AT AT146720D patent/AT146720B/en active
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1230232B (en) * | 1959-06-24 | 1966-12-08 | Aktienbolaget Bofors | Use of a corrosion-resistant steel alloy as a material for easily weldable objects |
DE1224512B (en) * | 1960-02-02 | 1966-09-08 | Atomic Energy Authority Uk | Use of an austenitic steel alloy as a material for nuclear reactor components and process for its manufacture |
DE1222266B (en) * | 1963-01-05 | 1966-08-04 | Bofors Ab | Use of a corrosion-resistant steel alloy as a material for easily weldable objects |
DE1264074B (en) * | 1963-01-28 | 1968-03-21 | United States Steel Corp | Use of a martensite-hardened steel as a material for objects that have to be resistant to stress corrosion cracking in a chloride-containing atmosphere |
DE1239109B (en) * | 1963-06-07 | 1967-04-20 | Int Nickel Ltd | Use of a martensite-hardenable steel alloy as a material for pressure and impact-resistant objects |
DE1458330A1 (en) * | 1963-08-02 | 1972-03-23 | Armco Steel Corp | Stainless steel |
DE1294032B (en) * | 1963-10-14 | 1969-04-30 | Allegheny Ludlum Steel | Martensitic, heat-treatable, stainless steel |
DE1458331B1 (en) * | 1963-10-14 | 1970-05-21 | Allegheny Ludlum Steel | Use of a martensitic, stainless steel alloy as a material for welded objects |
DE1233148B (en) * | 1964-07-13 | 1967-01-26 | Int Nickel Ltd | Use of a martensite hardenable steel alloy for pressure and impact resistant objects |
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