CN1046969C - Iron-manganese-silicon alloy with larger memory effect - Google Patents
Iron-manganese-silicon alloy with larger memory effect Download PDFInfo
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- CN1046969C CN1046969C CN94110395A CN94110395A CN1046969C CN 1046969 C CN1046969 C CN 1046969C CN 94110395 A CN94110395 A CN 94110395A CN 94110395 A CN94110395 A CN 94110395A CN 1046969 C CN1046969 C CN 1046969C
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- alloy
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- manganese
- iron
- silicon alloy
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Abstract
The present invention relates to Fe-Mn-Si alloy with large memory effect, which contains the components: 30 to 32 wt% of Mn, less than 6 wt% of Si and balance of Fe. The Fe-Mn-Si alloy is characterized in that after the common solution treatment of the Fe-Mn-Si alloy with large memory effect, the Fe-Mn-Si alloy is heated to 400 to 800 DEG C, and the temperature is kept for 5 to 20 min; 2 to 6% of predeformation is carried out; the alloy is rapidly cooled to room temperature. The Fe-Mn-Si alloy has large memory effect.
Description
The present invention relates to memorial alloy, the manufacture method of the Fe-Mn-Si alloy with big memory effect is provided especially.
The Fe-Mn-Si memorial alloy has the advantages that cost is low, machinability is good, is expected to the equivalent material as traditional NiTi, Cu base memorial alloy, obtains application in actual engineering.Have good memory effect when making Fe-Mn-Si alloy deformation at room temperature, best composition range is: 30～32%Mn ,～6%Si.Compare with NiTi, Cu base memorial alloy, Fe-Mn-Si polycrystalline memory effect is smaller, and has very little usually or do not have memory effect completely.The Fe-Mn-Si polycrystalline alloy of solution treatment recovers strain and is generally less than 2%.For improving the method that its memory effect adopts training usually: low temperature predeformation+600～800 ℃ annealing, this process need repeat to adopt this method more than 10 times, can make the Fe-Mn-Si alloy recover strain near 3%, but because this technology more complicated is difficult for promoting in actual applications.
The object of the present invention is to provide a kind of manufacture method of Fe-Mn-Fe alloy, it has bigger memory effect.
The invention provides a kind of manufacture method with Fe-Mn-Si alloy of memory effect, adopt the composition scope weight percent of alloy to exist: 30～32%Mn, 5.6～6.0%Si, surplus is Fe, after it is characterized in that common solution treatment, also need carry out following processing:
--the Fe-Mn-Si alloy is heated to 400～800 ℃, is incubated 5～20 minutes;
--give 2～6% predeformation;
--alloy is chilled to room temperature fast.
By above-mentioned technology, the memory strain of recovering strain and completely reversibility after the deformation of alloy room temperature can be significantly improved.Fe-Mn-Si alloy in the mentioned component scope, dynamic recrystallization begins temperature at 680～740 ℃, and this temperature range is that alloy carries out high temperature predeformation optimum temps.Alloy provided by the present invention heats and recovers deformation temperature between 350～600 ℃ in use.Below in conjunction with embodiment in detail the present invention is described in detail.
Embodiment
①Fe-31.0％Mn-6.0％Si
Alloy is heated to 720 ℃, is incubated after 8 minutes, carries out 4.2% predeformation, is chilled to room temperature then rapidly, after the deformation 6%, is heated to 550 ℃, and recovering strain is 4.0%, and safe reversible memory strain is 2.5%.
②Fe-30.2％Mn-5.6％Si
Alloy is heated to 690 ℃, is incubated after 12 minutes, carries out 5% predeformation, is chilled to room temperature then rapidly, after the deformation 6%, is heated to 600 ℃, and recovering strain is 3.6%, and safe reversible memory strain is 2.0%.
Claims (2)
1. manufacture method with Fe-Mn-Si alloy of memory effect, adopt the composition scope weight percent of alloy to exist: 30～32%Mn, 5.6～6.0%Si, surplus is Fe, it is characterized in that common solution treatment after, also need carry out following processing:
--the Fe-Mn-Si alloy is heated to 400～800 ℃, is incubated 5～20 minutes;
--give 2～6% predeformation;
--alloy is chilled to room temperature fast.
2. according to the described manufacture method of claim 1, it is characterized in that Heating temperature is preferably in 680～740 ℃ with Fe-Mn-Si alloy of memory effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110395A CN1046969C (en) | 1994-07-19 | 1994-07-19 | Iron-manganese-silicon alloy with larger memory effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94110395A CN1046969C (en) | 1994-07-19 | 1994-07-19 | Iron-manganese-silicon alloy with larger memory effect |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1115340A CN1115340A (en) | 1996-01-24 |
| CN1046969C true CN1046969C (en) | 1999-12-01 |
Family
ID=5034368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94110395A Expired - Fee Related CN1046969C (en) | 1994-07-19 | 1994-07-19 | Iron-manganese-silicon alloy with larger memory effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1046969C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395370C (en) * | 2006-01-05 | 2008-06-18 | 同济大学 | Memory alloy fish bolt fastener material for railway and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0176272A1 (en) * | 1984-09-07 | 1986-04-02 | Nippon Steel Corporation | Shape memory alloy and method for producing the same |
| US5032195A (en) * | 1989-03-02 | 1991-07-16 | Korea Institute Of Science And Technology | FE-base shape memory alloy |
-
1994
- 1994-07-19 CN CN94110395A patent/CN1046969C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0176272A1 (en) * | 1984-09-07 | 1986-04-02 | Nippon Steel Corporation | Shape memory alloy and method for producing the same |
| US5032195A (en) * | 1989-03-02 | 1991-07-16 | Korea Institute Of Science And Technology | FE-base shape memory alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100395370C (en) * | 2006-01-05 | 2008-06-18 | 同济大学 | Memory alloy fish bolt fastener material for railway and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1115340A (en) | 1996-01-24 |
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