US20130160900A1 - SHAPE MEMORY STAINLESS STEELS WITH RARE EARTH ELEMENTS Ce AND La - Google Patents
SHAPE MEMORY STAINLESS STEELS WITH RARE EARTH ELEMENTS Ce AND La Download PDFInfo
- Publication number
- US20130160900A1 US20130160900A1 US13/684,598 US201213684598A US2013160900A1 US 20130160900 A1 US20130160900 A1 US 20130160900A1 US 201213684598 A US201213684598 A US 201213684598A US 2013160900 A1 US2013160900 A1 US 2013160900A1
- Authority
- US
- United States
- Prior art keywords
- shape memory
- stainless steels
- rare earth
- earth elements
- ingot
- 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.)
- Abandoned
Links
Images
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
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/34—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of silicon
-
- 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
- C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2201/00—Treatment for obtaining particular effects
- C21D2201/01—Shape memory effect
Definitions
- the present subject matter relates to shape memory stainless steels. More particularly, the present subject matter relates to shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La).
- Shape memory alloys are a promising class of advanced materials used in many high technology applications, such as aerospace, electronics, and biotechnology.
- the shape memory alloys at a high temperature can be used as functional materials, such as actuators for aircraft engines, automobiles and pipe couplings. Further, the shape memory alloys are used to absorb wind energy.
- Nickel-Titanium (Ni—Ti) and Copper (Cu) based shape memory alloys have been used in such high technology applications. Even though the Nickel-Titanium (Ni—Ti) and Copper (Cu) based shape memory alloys have good shape memory effect, however their mechanical properties are lower and are significantly more expensive to produce when compared with shape memory stainless steels. Further, machinability of the Ni—Ti based shape memory alloys is relatively poor when compared with the shape memory stainless steels.
- the shape memory stainless steels are cheaper alternatives to the expensive Ni—Ti and Cu based shape memory alloys.
- the existing shape memory stainless steels exhibit good shape memory effect, mechanical properties, machinability, weldability and corrosion resistance.
- the shape memory effect of the shape memory stainless steels is not as good as the Ni—Ti and Cu based shape memory alloys.
- Shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La) are disclosed.
- the shape memory stainless steels with rare earth elements include Manganese (Mn), Silicon (Si), Chromium (Cr), Nickel (Ni), Carbon (C), Ce, La and Iron (Fe).
- the shape memory stainless steels with rare earth elements Ce and La include, by weight, about 15 to 17% of Mn, about 5 to 6% of Si, about 9 to 12% of Cr, about 8 to 10% of Ni, about 0.03 to 0.06% of C, about 0.10 to 0.50% of Ce, about 0.5 to 1.0% of La and the balance being Fe.
- raw materials including Mn, Si, Cr, Ni, C, Ce, La and Fe are melted to form a molten alloy of the shape memory stainless steels with rare earth elements Ce and La. Further, the molten alloy is solidified to form an ingot. Furthermore, the ingot is subjected to nondestructive evaluation to assess internal soundness of the ingot. In addition, the evaluated ingot is homogenized to form homogenized shape memory stainless steels with rare earth elements Ce and La. Moreover, a semi-finished product is formed from the homogenized shape memory stainless steels with rare earth elements Ce and La. Also, a desired component is formed from the semi-finished product.
- FIG. 1 illustrates a flow diagram of an exemplary method of forming shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La); and
- FIG. 2 is a table including a range, by weight, of each element in the shape memory stainless steels with rare earth elements Ce and La, according to one embodiment.
- FIG. 1 illustrates a flow diagram 100 of an exemplary method of forming shape memory stainless steels with rare earth elements Ce and La.
- raw materials including Manganese (Mn), Silicon (Si), Chromium (Cr), Nickel (Ni), Carbon (C), Ce, La and Iron (Fe) are added.
- the shape memory stainless steels with rare earth elements Ce and La include, by weight, about 15 to 17% of Mn, about 5 to 6% of Si, about 9 to 12% of Cr, about 8 to 10% of Ni, about 0.03 to 0.06% of C, about 0.10 to 0.50% of Ce, about 0.5 to 1.0% of La and the balance being Fe.
- the added raw materials are melted to form a molten alloy of the shape memory stainless steels with rare earth elements Ce and La.
- the added raw materials are melted at a temperature of about 1600° C. to form the molten alloy.
- the added raw materials are melted conventionally or using vacuum induction at the temperature of about 1600° C. to form the molten alloy.
- the molten alloy is solidified to form an ingot.
- the molten alloy is solidified by cooling to form the ingot of a desired shape.
- the ingot is subjected to nondestructive evaluation to assess internal soundness of the ingot based on quality parameters, such as internal defects, voids, cracks, cavities and the like.
- the nondestructive evaluation uses gamma radiography.
- the evaluated ingot is homogenized to form homogenized shape memory stainless steels with rare earth elements Ce and La.
- the evaluated ingot is homogenized by heating the evaluated ingot at a temperature in a range of about 1050° C. to 1150° C.
- a semi-finished product is formed from the homogenized shape memory stainless steels with rare earth elements Ce and La.
- Exemplary semi-finished product includes a rolled product, a forged product and the like.
- a desired component is formed from the semi-finished product. In one embodiment, the semi-finished product is cold worked or machined to form the desired component.
- Exemplary desired component includes an actuator for an aircraft engine, an automobile component, a pipe coupling and the like.
- thin sheets of the homogenized shape memory stainless steels with rare earth elements Ce and La are made and then small strips are extracted from the thin sheets.
- strips with different lengths are extracted from the thin sheets to measure the shape memory effect.
- the strips are bent into a semicircular shape on mandrels with different diameters at a room temperature with the ends of strips perpendicular to horizontal straight line.
- pre-strain ( ⁇ p ) is computed for each strip using an equation:
- t thickness of the strips and d is diameter of the semicircular shapes of a respective strip.
- ⁇ SME degree of shape recovery
- shape memory effect also referred as a net reversible strain ( ⁇ R )
- ⁇ R net reversible strain
- a table 200 including a range, by weight, of each element in the shape memory stainless steels with rare earth elements Ce and La according to one embodiment.
- the first row includes various elements in the shape memory stainless steels with rare earth elements Ce and La, such as Mn, Si, Cr, Ni, C, Ce, La and Fe.
- the second row includes the range, by weight, of each element in the shape memory stainless steels with rare earth elements Ce and La. Using the range of the elements, in the table 200 , one can form multiple shape memory stainless steels with rare earth elements Ce and La.
- the method described in FIGS. 1 and 2 enables to form the shape memory stainless steels with rare earth elements Ce and La.
- the shape memory stainless steels with rare earth elements Ce and La are cheaper compared to existing shape memory alloys. Further, the shape memory stainless steels with rare earth elements Ce and La have good mechanical properties, machinability, weldability and corrosion resistance.
Abstract
Shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La) are disclosed. In one embodiment, raw materials including Manganese (Mn), Silicon (Si), Chromium (Cr), Nickel (Ni), Carbon (C), Ce, La and Iron (Fe) are melted to form a molten alloy of the shape memory stainless steels with rare earth elements Ce and La. Further, the molten alloy is solidified to form an ingot. Furthermore, the ingot is subjected to nondestructive evaluation to assess internal soundness of the ingot. In addition, the evaluated ingot is homogenized to form homogenized shape memory stainless steels with rare earth elements Ce and La.
Description
- Benefit is claimed under 35 U.S.C 119(a)-(d) to Foreign Application Serial No. 4525/CHE/2011, filed in INDIA entitled “SHAPE MEMORY STAINLESS STEELS WITH RARE EARTH ELEMENTS Ce AND La” by Airbus Engineering Centre India, filed on Dec. 22, 2011, which is herein incorporated in its entirety by reference for all purposes.
- The present subject matter relates to shape memory stainless steels. More particularly, the present subject matter relates to shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La).
- Shape memory alloys are a promising class of advanced materials used in many high technology applications, such as aerospace, electronics, and biotechnology. The shape memory alloys at a high temperature can be used as functional materials, such as actuators for aircraft engines, automobiles and pipe couplings. Further, the shape memory alloys are used to absorb wind energy. Typically, Nickel-Titanium (Ni—Ti) and Copper (Cu) based shape memory alloys have been used in such high technology applications. Even though the Nickel-Titanium (Ni—Ti) and Copper (Cu) based shape memory alloys have good shape memory effect, however their mechanical properties are lower and are significantly more expensive to produce when compared with shape memory stainless steels. Further, machinability of the Ni—Ti based shape memory alloys is relatively poor when compared with the shape memory stainless steels.
- Generally, the shape memory stainless steels are cheaper alternatives to the expensive Ni—Ti and Cu based shape memory alloys. The existing shape memory stainless steels exhibit good shape memory effect, mechanical properties, machinability, weldability and corrosion resistance. However, the shape memory effect of the shape memory stainless steels is not as good as the Ni—Ti and Cu based shape memory alloys.
- It is well known that the shape memory effect in Iron (Fe) based shape memory alloys is associated with the transformation of face centred cubic austenite (γ) to hexagonal closed packed (hcp) ε—martensite. The transformation can be divided into two components, such as one involving formation of ε—martensite when cooled below a martensite start temperature (Ms) and the other involving stress induced transformation of austenite. There are different opinions on the effect of thermal martensite on recovery strain of the Fe based shape memory alloys. One technique that is used to reduce an incidence of thermal martensite is to reduce Ms by decreasing the austenite grain size, such as addition of grain refining elements, thermo-mechanical treatments and so on.
- Shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La) are disclosed. According to one aspect of the present subject matter, the shape memory stainless steels with rare earth elements include Manganese (Mn), Silicon (Si), Chromium (Cr), Nickel (Ni), Carbon (C), Ce, La and Iron (Fe). The shape memory stainless steels with rare earth elements Ce and La include, by weight, about 15 to 17% of Mn, about 5 to 6% of Si, about 9 to 12% of Cr, about 8 to 10% of Ni, about 0.03 to 0.06% of C, about 0.10 to 0.50% of Ce, about 0.5 to 1.0% of La and the balance being Fe.
- According to another aspect of the present subject matter, raw materials including Mn, Si, Cr, Ni, C, Ce, La and Fe are melted to form a molten alloy of the shape memory stainless steels with rare earth elements Ce and La. Further, the molten alloy is solidified to form an ingot. Furthermore, the ingot is subjected to nondestructive evaluation to assess internal soundness of the ingot. In addition, the evaluated ingot is homogenized to form homogenized shape memory stainless steels with rare earth elements Ce and La. Moreover, a semi-finished product is formed from the homogenized shape memory stainless steels with rare earth elements Ce and La. Also, a desired component is formed from the semi-finished product.
- The method disclosed herein may be implemented in any means for achieving various aspects. Other features will be apparent from the accompanying drawings and from the detailed description that follow.
- Various embodiments are described herein with reference to the drawings, wherein:
-
FIG. 1 illustrates a flow diagram of an exemplary method of forming shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La); and -
FIG. 2 is a table including a range, by weight, of each element in the shape memory stainless steels with rare earth elements Ce and La, according to one embodiment. - The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way.
- Shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La) are disclosed. In the following detailed description of the embodiments of the present subject matter, references are made to the accompanying drawings that form a part hereof, and in which are shown by way of illustration specific embodiments in which the present subject matter may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the present subject matter, and it is to be understood that other embodiments may be utilized and that changes may be made without departing from the scope of the present subject matter. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present subject matter is defined by the appended claims.
-
FIG. 1 illustrates a flow diagram 100 of an exemplary method of forming shape memory stainless steels with rare earth elements Ce and La. Atblock 102, raw materials including Manganese (Mn), Silicon (Si), Chromium (Cr), Nickel (Ni), Carbon (C), Ce, La and Iron (Fe) are added. In one embodiment, as shown inFIG. 2 , the shape memory stainless steels with rare earth elements Ce and La include, by weight, about 15 to 17% of Mn, about 5 to 6% of Si, about 9 to 12% of Cr, about 8 to 10% of Ni, about 0.03 to 0.06% of C, about 0.10 to 0.50% of Ce, about 0.5 to 1.0% of La and the balance being Fe. Atblock 104, the added raw materials are melted to form a molten alloy of the shape memory stainless steels with rare earth elements Ce and La. In one embodiment, the added raw materials are melted at a temperature of about 1600° C. to form the molten alloy. In this embodiment, the added raw materials are melted conventionally or using vacuum induction at the temperature of about 1600° C. to form the molten alloy. - At
block 106, the molten alloy is solidified to form an ingot. In one embodiment, the molten alloy is solidified by cooling to form the ingot of a desired shape. Atblock 108, the ingot is subjected to nondestructive evaluation to assess internal soundness of the ingot based on quality parameters, such as internal defects, voids, cracks, cavities and the like. In one embodiment, the nondestructive evaluation uses gamma radiography. Atblock 110, the evaluated ingot is homogenized to form homogenized shape memory stainless steels with rare earth elements Ce and La. In one embodiment, the evaluated ingot is homogenized by heating the evaluated ingot at a temperature in a range of about 1050° C. to 1150° C. for about 6 hours to form the homogenized shape memory stainless steels with rare earth elements Ce and La. Atblock 112, a semi-finished product is formed from the homogenized shape memory stainless steels with rare earth elements Ce and La. Exemplary semi-finished product includes a rolled product, a forged product and the like. Atblock 114, a desired component is formed from the semi-finished product. In one embodiment, the semi-finished product is cold worked or machined to form the desired component. Exemplary desired component includes an actuator for an aircraft engine, an automobile component, a pipe coupling and the like. - In one embodiment, to measure shape memory effect of the shape memory stainless steels with rare earth elements Ce and La, thin sheets of the homogenized shape memory stainless steels with rare earth elements Ce and La are made and then small strips are extracted from the thin sheets. In one embodiment, strips with different lengths are extracted from the thin sheets to measure the shape memory effect. Further, the strips are bent into a semicircular shape on mandrels with different diameters at a room temperature with the ends of strips perpendicular to horizontal straight line. Furthermore, pre-strain (εp) is computed for each strip using an equation:
-
εp =t/d - where t is thickness of the strips and d is diameter of the semicircular shapes of a respective strip.
- The strips are then allowed to recover at a temperature in a range about 400° C.-450° C. In addition, a degree of shape recovery (ηSME) for each strip is computed using an equation:
-
ηSME=((90−θ)/90)×100 - where θ is a residual angle.
- Also, the shape memory effect (also referred as a net reversible strain (εR)), in percentage, for each strip is computed using an equation:
-
εR=εP×ηSME. - Referring now to
FIG. 2 , a table 200 including a range, by weight, of each element in the shape memory stainless steels with rare earth elements Ce and La, according to one embodiment. In the table 200, the first row includes various elements in the shape memory stainless steels with rare earth elements Ce and La, such as Mn, Si, Cr, Ni, C, Ce, La and Fe. Further in the table 200, the second row includes the range, by weight, of each element in the shape memory stainless steels with rare earth elements Ce and La. Using the range of the elements, in the table 200, one can form multiple shape memory stainless steels with rare earth elements Ce and La. - In various embodiments, the method described in
FIGS. 1 and 2 enables to form the shape memory stainless steels with rare earth elements Ce and La. The shape memory stainless steels with rare earth elements Ce and La are cheaper compared to existing shape memory alloys. Further, the shape memory stainless steels with rare earth elements Ce and La have good mechanical properties, machinability, weldability and corrosion resistance. - Although the present embodiments have been described with reference to specific example embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader spirit and scope of the various embodiments.
Claims (15)
1. Shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La), which comprise, Manganese (Mn), Silicon (Si), Chromium (Cr), Nickel (Ni), Carbon (C), Ce, La and Iron (Fe).
2. The shape memory stainless steels of claim 1 , wherein the shape memory stainless steels with rare earth elements Ce and La comprise, by weight, about 15 to 17% of Mn, about 5 to 6% of Si, about 9 to 12% of Cr, about 8 to 10% of Ni, about 0.03 to 0.06% of C, about 0.10 to 0.50% of Ce, about 0.5 to 1.0% of La and the balance being Fe.
3. The shape memory stainless steels of claim 2 , wherein the shape memory stainless steels with rare earth elements Ce and La further comprise:
unavoidable impurities.
4. A method of forming shape memory stainless steels with rare earth elements Cerium (Ce) and Lanthanum (La), comprising:
melting raw materials including Manganese (Mn), Silicon (Si), Chromium (Cr), Nickel (Ni), Carbon (C), Ce, La and Iron (Fe) to form a molten alloy of the shape memory stainless steels with rare earth elements Ce and La;
solidifying the molten alloy to form an ingot;
subjecting the ingot to nondestructive evaluation to assess internal soundness of the ingot; and
homogenizing the evaluated ingot to form homogenized shape memory stainless steels with rare earth elements Ce and La.
5. The method of claim 4 , wherein the shape memory stainless steels with rare earth elements Ce and La comprise, by weight, about 15 to 17% of Mn, about 5 to 6% of Si, about 9 to 12% of Cr, about 8 to 10% of Ni, about 0.03 to 0.06% of C, about 0.10 to 0.50% of Ce, about 0.5 to 1.0% of La and the balance being Fe.
6. The method of claim 4 , wherein homogenizing the evaluated ingot to form the homogenized shape memory stainless steels with rare earth elements Ce and La comprises:
homogenizing the evaluated ingot by heating the evaluated ingot at a temperature in a range of about 1050° C. to 1150° C. for about 6 hours to form the homogenized shape memory stainless steels with rare earth elements Ce and La.
7. The method of claim 4 , wherein the nondestructive evaluation comprises nondestructive evaluation using gamma radiography.
8. The method of claim 4 , wherein melting the raw materials to form the molten alloy comprises:
adding the raw materials; and
melting the added raw materials at a temperature of about 1600° C. to form the molten alloy.
9. The method of claim 8 , wherein melting the added raw materials at the temperature of about 1600° C. comprises:
conventional melting of the added raw materials at the temperature of about 1600° C.
10. The method of claim 8 , wherein melting the added raw materials at the temperature of about 1600° C. comprises:
vacuum induction melting of the added raw materials at the temperature of about 1600° C.
11. The method of claim 4 , wherein solidifying the molten alloy to form the ingot comprises:
solidifying the molten alloy by cooling to form the ingot of a desired shape.
12. The method of claim 4 , further comprising:
forming a semi-finished product from the homogenized shape memory stainless steels with rare earth elements Ce and La.
13. The method of claim 12 , wherein the semi-finished product comprises a rolled product or a forged product.
14. The method of claim 12 , further comprising:
forming a desired component from the semi-finished product.
15. The method of claim 14 , wherein the desired component is an actuator for an aircraft engine, an automobile component and a pipe coupling.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IN4525CH2011 | 2011-12-22 | ||
IN4525/CHE/2011 | 2011-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20130160900A1 true US20130160900A1 (en) | 2013-06-27 |
Family
ID=47323939
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/684,598 Abandoned US20130160900A1 (en) | 2011-12-22 | 2012-11-26 | SHAPE MEMORY STAINLESS STEELS WITH RARE EARTH ELEMENTS Ce AND La |
Country Status (3)
Country | Link |
---|---|
US (1) | US20130160900A1 (en) |
EP (1) | EP2607513B8 (en) |
CN (1) | CN103173695B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2591933C1 (en) * | 2015-04-13 | 2016-07-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ФГУП "ВИАМ") | High-temperature alloy with shape memory effect |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105331905B (en) * | 2015-11-12 | 2017-05-03 | 深圳市雅鲁实业有限公司 | Novel non-magnetic stainless steel and preparation method thereof |
CN105396688B (en) * | 2015-11-30 | 2017-06-06 | 永春聚发工艺品有限公司 | electromagnetic ore separator |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62170457A (en) * | 1986-01-23 | 1987-07-27 | Nippon Steel Corp | Shape memory iron alloy |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1024719B (en) * | 1951-04-16 | 1958-02-20 | Carpenter Steel Company | Hot-formable alloys |
JPS5611745B2 (en) * | 1973-10-03 | 1981-03-17 | ||
JPH04154909A (en) * | 1990-10-16 | 1992-05-27 | Sumitomo Metal Ind Ltd | Production of cast material for tool excellent in crack resistance |
AU6361396A (en) * | 1995-07-11 | 1997-02-10 | Kari Martti Ullakko | Iron-based shape memory and vibration damping alloys containing nitrogen |
CN1062060C (en) * | 1997-12-31 | 2001-02-14 | 天津大学国家教委形状记忆材料工程研究中心 | Shape-memory stainless steel joint for pipeline |
CN1098371C (en) * | 1999-09-30 | 2003-01-08 | 上海交通大学 | Rare earth-iron based high-temp. marmem |
-
2012
- 2012-11-26 US US13/684,598 patent/US20130160900A1/en not_active Abandoned
- 2012-11-29 EP EP12194924.2A patent/EP2607513B8/en not_active Not-in-force
- 2012-12-17 CN CN201210544848.1A patent/CN103173695B/en not_active Expired - Fee Related
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62170457A (en) * | 1986-01-23 | 1987-07-27 | Nippon Steel Corp | Shape memory iron alloy |
Non-Patent Citations (4)
Title |
---|
Chenxu Zhao at el., "Influence of Cerium, Titanium and Nitrogen on Shape Memory Effect of Fe-Mn-Si-Cr-Ni Alloys", Scripta Materialia Vol. 38 No. 7 (1998) pages 1163-1168. * |
DE 1024719 machine translation * |
JP62-170457 written translation * |
Schaffer, Saxena, Antolovich, Sanders, Warner. The Science and Design of Engineering Materials. Chapter 4 Section 4.3 Impurities page 116. * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2591933C1 (en) * | 2015-04-13 | 2016-07-20 | Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ФГУП "ВИАМ") | High-temperature alloy with shape memory effect |
Also Published As
Publication number | Publication date |
---|---|
CN103173695A (en) | 2013-06-26 |
EP2607513B1 (en) | 2016-04-06 |
EP2607513A1 (en) | 2013-06-26 |
CN103173695B (en) | 2015-10-21 |
EP2607513B8 (en) | 2016-09-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107075629B (en) | Austenitic stainless steel sheet | |
TWI510642B (en) | Steel wire for bolt, bolt and manufacturing method thereof | |
EP3354756B1 (en) | Online-controlled seamless steel tube cooling process and seamless steel tube manufacturing method with effective grain refinement | |
JP6819700B2 (en) | Ni-based heat-resistant alloy member and its manufacturing method | |
Peng et al. | Key factors achieving large recovery strains in polycrystalline Fe–Mn–Si‐based shape memory alloys: A review | |
EP2589673A1 (en) | Hot-rolled steel sheet and method for producing same | |
CN114086049B (en) | 2.0GPa grade CoCrNi-based medium entropy alloy with ultrahigh yield strength and plasticity and preparation method thereof | |
CN101660107A (en) | Atmosphere corrosion resistance structural steel with ultralow temperature impact performance and manufacturing method thereof | |
JP2008019479A (en) | Rolled austenitic stainless steel plate with excellent strength and ductility, and its manufacturing method | |
TWI547566B (en) | Steel for mechanical construction for cold working and its manufacturing method | |
JP6222504B1 (en) | Metastable austenitic stainless steel strip or steel plate and method for producing the same | |
US20170283901A1 (en) | Grade 550mpa high-temperature resistant pipeline steel and method of manufacturing same | |
JP5618916B2 (en) | Machine structural steel for cold working, method for producing the same, and machine structural parts | |
CN102226255A (en) | Steel plate with high strength and toughness and 690MPa of yield strength and preparation process thereof | |
CN106906426B (en) | A kind of high tenacity high corrosion resistant type weather-resistant steel plate and its manufacturing method | |
WO2017169011A1 (en) | Ti-containing ferritic stainless steel sheet, manufacturing method, and flange | |
CN107557666A (en) | A kind of Q355NH rare earths weatherproof structure steel band and preparation method thereof | |
US20130160900A1 (en) | SHAPE MEMORY STAINLESS STEELS WITH RARE EARTH ELEMENTS Ce AND La | |
JP6309003B2 (en) | Molded parts made of corrosion-resistant copper alloy | |
JP6400516B2 (en) | High strength steel material with excellent fatigue crack propagation resistance and method for producing the same | |
JP6229794B2 (en) | Seamless stainless steel pipe for oil well and manufacturing method thereof | |
EP3342894A1 (en) | Stainless steel pipe and method for producing same | |
Tian et al. | Cracking due to Cu and Ni segregation in a 17-4 PH stainless steel piston rod | |
JP5704716B2 (en) | Machine structural steel for cold working and method for producing the same | |
JP6400517B2 (en) | High strength steel material with excellent fatigue crack propagation resistance and method for producing the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AIRBUS ENGINEERING CENTRE INDIA, INDIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SHETTY, KISHORA;REEL/FRAME:029344/0792 Effective date: 20121126 |
|
AS | Assignment |
Owner name: AIRBUS GROUP INDIA PRIVATE LIMITED, INDIA Free format text: CHANGE OF NAME;ASSIGNOR:AIRBUS ENGINEERING CENTRE INDIA;REEL/FRAME:039390/0277 Effective date: 20150428 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |