CN101956097B - Machining method of CuAlMn low-temperature memory alloy plate - Google Patents
Machining method of CuAlMn low-temperature memory alloy plate Download PDFInfo
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- CN101956097B CN101956097B CN2010105089899A CN201010508989A CN101956097B CN 101956097 B CN101956097 B CN 101956097B CN 2010105089899 A CN2010105089899 A CN 2010105089899A CN 201010508989 A CN201010508989 A CN 201010508989A CN 101956097 B CN101956097 B CN 101956097B
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Abstract
The invention provides a machining method of a CuAlMn low-temperature memory alloy plate, belonging to the technical field of memory alloy. The machining method is characterized by comprising the following steps: smelting the following components in a vacuum induction furnace: 26-26.5% of Al, 5-5.5% of Mn, 0.3-0.8% of composite rare earth additive and the balance of copper; adding 0.3-0.8% of composite rare earth during the smelting process, and pouring the smelted components into cast ingot diameter of which is phi80*150mm; and annealing and lathe-machining the cast ingot to remove surface of 2-3mm, forging the machined cast ingot into a plate (100*10mm) and then rolling into a plate (180*0.5-1mm), and finally performing vacuum heat treatment, wherein, martensite transition temperature of the CuAlMn low-temperature memory alloy plate is 100-180K, inverse martensite transition temperature thereof is 120-200K, and mechanical properties are as follows: sigmab=550-560MPa, sigma0.2=300-310MPa and delta=5.5-6.5%.
Description
Technical field
The invention belongs to the memorial alloy technical field, refer in particular to a kind of CuAlMn low temperature memorial alloy method for processing sheet material.
Background technology
Through discovering in recent years, CuAlMn is a kind of memorial alloy with better low temperature SME.Up to the present, report is considerably less both at home and abroad for the relevant shape memory alloy of martensitic transformation temperature Ms below 200K.Subzero valve (working temperature is lower than the valve of 200K) is one of industrial indispensable visual plants such as petrochemical complex, air separation, Sweet natural gas, can the quality of its quality is determining safely, economical, produce constantly.The Subzero valve working conditions is harsh, and its working medium major part is the material inflammable, explosive, that perviousness is strong, and minimum operating temperature can reach 4K, and extreme service presure reaches 10MPa.If utilize this low temperature shape memory alloy to make temperature controlling valve, the liquid nitrogen flow in the cryogenic system can be controlled, thereby the consumption of liquid nitrogen can be effectively reduced, reach the purpose of save energy.Some Subzero valve is to adopt board making, and the present invention develops a kind of CuAlMn low temperature memorial alloy method for processing sheet material.
Summary of the invention
The objective of the invention is to develop a kind of CuAlMn low temperature memorial alloy method for processing sheet material, it is characterized by: with composition is Al26-26.5%, Mn5-5.5%, and compound rare-earth additive 0.3-0.8%, all the other carry out melting for the material of copper in vacuum induction furnace.In the fusion process, add compound rare-earth 0.3%-0.8%, pour into the ingot casting that diameter is φ 80 * 150mm after the melting.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, and surperficial 2-3mm is removed in turning processing then, forges into the sheet material of 100 * 10mm again, 830 ℃-650 ℃ of forging temperatures, the last rolling sheet material that is processed into 180 * 0.5～1mm.The rolling course of processing is following: the sheet material of 100 * 10mm is rolled, and rolling temperature is 800 ℃-740 ℃, is rolled into the sheet material of 115 * 7mm this moment; 115 * 7mm sheet material is rolled, and rolling temperature is 740 ℃-680 ℃, is rolled into the sheet material of 130 * 4mm this moment; 130 * 4mm sheet material is rolled, and rolling temperature is 700 ℃-640 ℃, is rolled into the sheet material of 150 * 2.5mm this moment; 150 * 2.5mm sheet material is rolled, and rolling temperature is 660 ℃-600 ℃, is rolled into the sheet material of 165 * 1.5mm this moment; 165 * 1.5mm sheet material is carried out cold rolling, through two to four times cold rolling, the sheet material of last cold rolling one-tenth 180 * 0.5～1mm.Carry out vacuum heat treatment then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out (being incubated 30 minutes) in 150 ℃ of oil again and 50 ℃ of water in (being incubated 15 minutes) two-stage ageing treatment.This moment, the martensite transformation temperature of CuAlMn low temperature memorial alloy sheet material was 100-180K, and contrary martensite transformation temperature is 120-200K.Mechanical property is σ
b=550-560MPa, σ
0.2=300-310MPa, δ=5.5-6.5%.
Description of drawings
Fig. 1 CuAlMn low temperature memorial alloy sheet material
Embodiment
Embodiment 1
With composition is Al26%, Mn5%, and compound rare-earth additive 0.3%, all the other carry out melting for the material of copper in vacuum induction furnace.In the fusion process, add compound rare-earth additive 0.3%, pour into the ingot casting that diameter is φ 80 * 150mm after the melting.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, and surperficial 2-3mm is removed in turning processing then, forges into the sheet material of 100 * 10mm again, 830 ℃-650 ℃ of forging temperatures, the last rolling sheet material that is processed into 180 * 0.5～1mm.The rolling course of processing is following: the sheet material of 100 * 10mm is rolled, and rolling temperature is 800 ℃-740 ℃, is rolled into the sheet material of 115 * 7mm this moment; 115 * 7mm sheet material is rolled, and rolling temperature is 740 ℃-680 ℃, is rolled into the sheet material of 130 * 4mm this moment; 130 * 4mm sheet material is rolled, and rolling temperature is 700 ℃-640 ℃, is rolled into the sheet material of 150 * 2.5mm this moment; 150 * 2.5mm sheet material is rolled, and rolling temperature is 660 ℃-600 ℃, is rolled into the sheet material of 165 * 1.5mm this moment; 165 * 1.5mm sheet material is carried out cold rolling, through two to four times cold rolling, the sheet material of last cold rolling one-tenth 180 * 0.5～1mm.Carry out vacuum heat treatment then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out (being incubated 30 minutes) in 150 ℃ of oil again and 50 ℃ of water in (being incubated 15 minutes) two-stage ageing treatment.This moment, the martensite transformation temperature of CuAlMn low temperature memorial alloy sheet material was 180K ± 3K, and contrary martensite transformation temperature is 200K ± 3K.Mechanical property is σ
b=556.3MPa, σ
0.2=302.1MPa, δ=6.18%.
Embodiment 2
With composition is Al26.25%, Mn5.25%, and compound rare-earth 0.5%, all the other carry out melting for the material of copper in vacuum induction furnace.In the fusion process, add compound rare-earth 0.5%, pour into the ingot casting that diameter is φ 80 * 150mm after the melting.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, and surperficial 2-3mm is removed in turning processing then, forges into the sheet material of 100 * 10mm again, 830 ℃-650 ℃ of forging temperatures, the last rolling sheet material that is processed into 180 * 0.5～1mm.The rolling course of processing is following: the sheet material of 100 * 10mm is rolled, and rolling temperature is 800 ℃-740 ℃, is rolled into the sheet material of 115 * 7mm this moment; 115 * 7mm sheet material is rolled, and rolling temperature is 740 ℃-680 ℃, is rolled into the sheet material of 130 * 4mm this moment; 130 * 4mm sheet material is rolled, and rolling temperature is 700 ℃-640 ℃, is rolled into the sheet material of 150 * 2.5mm this moment; 150 * 2.5mm sheet material is rolled, and rolling temperature is 660 ℃-600 ℃, is rolled into the sheet material of 165 * 1.5mm this moment; 165 * 1.5mm sheet material is carried out cold rolling, through two to four times cold rolling, the sheet material of last cold rolling one-tenth 180 * 0.5～1mm.Carry out vacuum heat treatment then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out (being incubated 30 minutes) in 150 ℃ of oil again and 50 ℃ of water in (being incubated 15 minutes) two-stage ageing treatment.This moment, the martensite transformation temperature of CuAlMn low temperature memorial alloy sheet material was 140K ± 3K, and contrary martensite transformation temperature is 160K ± 3K.Mechanical property is σ
b=558.3MPa, σ
0.2=306.1MPa, δ=5.95%.
Embodiment 3
With composition is Al26.5%, Mn5.5%, and compound rare-earth 0.8%, all the other carry out melting for the material of copper in vacuum induction furnace.In the fusion process, add compound rare-earth 0.8%, pour into the ingot casting that diameter is φ 80 * 150mm after the melting.Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, and surperficial 2-3mm is removed in turning processing then, forges into the sheet material of 100 * 10mm again, 830 ℃-650 ℃ of forging temperatures, the last rolling sheet material that is processed into 180 * 0.5～1mm.The rolling course of processing is following: the sheet material of 100 * 10mm is rolled, and rolling temperature is 800 ℃-740 ℃, is rolled into the sheet material of 115 * 7mm this moment; 115 * 7mm sheet material is rolled, and rolling temperature is 740 ℃-680 ℃, is rolled into the sheet material of 130 * 4mm this moment; 130 * 4mm sheet material is rolled, and rolling temperature is 700 ℃-640 ℃, is rolled into the sheet material of 150 * 2.5mm this moment; 150 * 2.5mm sheet material is rolled, and rolling temperature is 660 ℃-600 ℃, is rolled into the sheet material of 165 * 1.5mm this moment; 165 * 1.5mm sheet material is carried out cold rolling, through two to four times cold rolling, the sheet material of last cold rolling one-tenth 180 * 0.5～1mm.Carry out vacuum heat treatment then, its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out (being incubated 30 minutes) in 150 ℃ of oil again and 50 ℃ of water in (being incubated 15 minutes) two-stage ageing treatment.This moment, the martensite transformation temperature of CuAlMn low temperature memorial alloy sheet material was 100K ± 3K, and contrary martensite transformation temperature is 120K ± 3K.Mechanical property is σ
b=554.7MPa, σ
0.2=303.8MPa, δ=6.24%.
Claims (2)
1. CuAlMn low temperature memorial alloy method for processing sheet material is characterized by: with composition do, Al26-26.5%, Mn5-5.5%, compound rare-earth additive 0.3-0.8%, all the other carry out melting for the material of copper in vacuum induction furnace; In the fusion process, add said compound rare-earth additive 0.3%-0.8%, pour into the ingot casting that diameter is φ 80 * 150mm after the melting; Anneal is to be heated to 820 ℃ of insulations furnace cooling after 24 hours, and surperficial 2-3mm is removed in turning processing then, forges into the sheet material of 100 * 10mm again, 830 ℃-650 ℃ of forging temperatures, the last rolling sheet material that is processed into 180 * 0.5～1mm; The rolling course of processing is following: the sheet material of 100 * 10mm is rolled, and rolling temperature is 800 ℃-740 ℃, is rolled into the sheet material of 115 * 7mm this moment; 115 * 7mm sheet material is rolled, and rolling temperature is 740 ℃-680 ℃, is rolled into the sheet material of 130 * 4mm this moment; 130 * 4mm sheet material is rolled, and rolling temperature is 700 ℃-640 ℃, is rolled into the sheet material of 150 * 2.5mm this moment; 150 * 2.5mm sheet material is rolled, and rolling temperature is 660 ℃-600 ℃, is rolled into the sheet material of 165 * 1.5mm this moment; 165 * 1.5mm sheet material is carried out cold rolling, through two to four times cold rolling, the sheet material of last cold rolling one-tenth 180 * 0.5～1mm.
2. a kind of CuAlMn low temperature memorial alloy method for processing sheet material according to claim 1; The sheet material of cold rolling one-tenth 180 * 0.5～1mm carries out vacuum heat treatment; Its concrete technology is: 850 ℃ of insulations are quenched after 30 minutes in the room temperature oil, carry out in 150 ℃ of oil being incubated 15 minutes two-stage ageing treatment in insulation 30 minutes and the 50 ℃ of water again; This moment, the martensite transformation temperature of CuAlMn low temperature memorial alloy sheet material was 100-180K, and contrary martensite transformation temperature is 120-200K; Mechanical property is σ
b=550-560MPa, σ
0.2=300-310MPa, δ=5.5-6.5%.
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| CN2010105089899A CN101956097B (en) | 2010-10-15 | 2010-10-15 | Machining method of CuAlMn low-temperature memory alloy plate |
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| CN101956097B true CN101956097B (en) | 2012-08-22 |
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| CN110527934B (en) * | 2019-10-14 | 2020-08-04 | 河北工业大学 | Preparation method of high-strength high-damping CuAlMn shape memory alloy |
| CN113684942A (en) * | 2021-09-07 | 2021-11-23 | 荣华建设集团有限公司 | Cu-Al-Mn shape memory alloy shock absorption energy absorber for civil construction and manufacturing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044302A (en) * | 1989-01-17 | 1990-08-01 | 山东省冶金设计研究院 | Wear-resisting multicomponent cu alloy |
| CN1138880A (en) * | 1994-09-30 | 1996-12-25 | 新日本制铁株式会社 | Highly corrosion-resistant martensitic stainless steel with excellent weldability and process for producing the same |
| CN1167162A (en) * | 1997-05-08 | 1997-12-10 | 华南理工大学 | Beta brass shape-memory alloy and preparation method |
| JP2007197746A (en) * | 2006-01-25 | 2007-08-09 | Daido Steel Co Ltd | Tool steel |
| CN101381841A (en) * | 2008-10-15 | 2009-03-11 | 武汉钢铁(集团)公司 | High intensity and high ductility -50 DEG C low-temperature steel and manufacturing method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008056983A (en) * | 2006-08-30 | 2008-03-13 | Daido Steel Co Ltd | Precipitation hardening type stainless steel die |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044302A (en) * | 1989-01-17 | 1990-08-01 | 山东省冶金设计研究院 | Wear-resisting multicomponent cu alloy |
| CN1138880A (en) * | 1994-09-30 | 1996-12-25 | 新日本制铁株式会社 | Highly corrosion-resistant martensitic stainless steel with excellent weldability and process for producing the same |
| CN1167162A (en) * | 1997-05-08 | 1997-12-10 | 华南理工大学 | Beta brass shape-memory alloy and preparation method |
| JP2007197746A (en) * | 2006-01-25 | 2007-08-09 | Daido Steel Co Ltd | Tool steel |
| CN101381841A (en) * | 2008-10-15 | 2009-03-11 | 武汉钢铁(集团)公司 | High intensity and high ductility -50 DEG C low-temperature steel and manufacturing method thereof |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2007197746A 2007.08.09 |
| JP特开200856983A 2008.03.13 |
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