JPS58157935A - Shape memory alloy - Google Patents
Shape memory alloyInfo
- Publication number
- JPS58157935A JPS58157935A JP3888582A JP3888582A JPS58157935A JP S58157935 A JPS58157935 A JP S58157935A JP 3888582 A JP3888582 A JP 3888582A JP 3888582 A JP3888582 A JP 3888582A JP S58157935 A JPS58157935 A JP S58157935A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- shape memory
- memory alloy
- rare earth
- alloys
- 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.)
- Pending
Links
Landscapes
- Hard Magnetic Materials (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、優れた繰り返し形状記憶性を有する形状記憶
合金に関するものである０
高温でＣｍＣＬ型の体心立方構造をもち、熱弾性型のマ
ルテンサイト変態を生ずる合金は殆ど形状記憶効果を示
すことが知られておシ、これ壕でにＴｉ−Ｎｉ合金オヨ
びＴｌ −Ｎｉ −Ｘ （Ｘ −Ｆ＠、Ｃｏ。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shape memory alloy having excellent repeated shape memory properties.0 An alloy that has a CmCL type body-centered cubic structure and undergoes thermoelastic martensitic transformation at high temperatures is Ti--Ni alloys and Tl-Ni-X (X-F@, Co) are known to exhibit shape memory effects.
Ｃｕ）合金（以下Ｔ１−Ｎｉ系合金と呼ぶ）をはじめと
してＣｕ−Ｚｎ−ＡｊＳＣｕ−Ａｊ−Ｎ１、Ｃｕ−Ｚｎ
−Ａｕ、ＳＣｕ−Ｚｎ−Ｇａ５Ｃｕ−Ｚｎ−８ｍ、 Ｃ
ｕ−８ｎ。Cu) alloy (hereinafter referred to as T1-Ni alloy), Cu-Zn-AjSCu-Aj-N1, Cu-Zn
-Au, SCu-Zn-Ga5Cu-Zn-8m, C
u-8n.
釆を示さないため、実用上問題がある。しかし、Ｔｉ−
Ｎｉ系合金は例外であシ、多結晶体で形状記ノ
憶効果を有しており、極めて実用的であシ、シかも引張
強度も高く、耐食性に優れていることから、上記合金の
中では最も広範囲な検討がなされているものである。This poses a practical problem because it does not show a kettle. However, Ti-
Ni-based alloys are an exception; they are polycrystalline and have a shape memory effect, making them extremely practical.They also have high tensile strength and excellent corrosion resistance, making them one of the most popular among the above alloys. This is the one that has been studied most extensively.
このように、Ｔｉ−Ｎｉ系合金は実用上有利な材料であ
るが、その繰シ返し形状記憶性については未だ十分な信
頼性があるとは言い難く、このため高信頼性を要求さ訃
る応用部品、特に形状記憶効果を可逆的に繰シ返し生じ
させることを利用した応用品等への使用には問題が残さ
れている。In this way, Ti-Ni alloys are practically advantageous materials, but their repeated shape memory properties cannot be said to be sufficiently reliable, and for this reason, high reliability is required. Problems remain in its use in applied parts, particularly in applied products that utilize reversibly and repeatedly producing a shape memory effect.
本発明者等は、こうしたＴｉ−Ｎｉ系合金の繰り返し形
状記憶性を向上させるために、希土類元素を添加した合
金を作製したところ、この添加が合金の繰シ返し形状記
憶回復性に有益な効果をもたらすことを見いだしたもの
である。In order to improve the repeated shape memory properties of such Ti-Ni alloys, the present inventors created an alloy to which rare earth elements were added, and found that this addition had a beneficial effect on the repeated shape memory recovery properties of the alloy. This is what we found.
本発明の形状記憶合金は、Ｔｌ−Ｎｉ合金またはＴｉ
−Ｎｉ −Ｘ （Ｘ ＝ Ｆｅ、Ｃｏ、Ｃｕ）合金に、
５重ｉｔ−以下の希土類元素を１１１または２種以上含
有せしめたことを特徴とするものである。The shape memory alloy of the present invention is a Tl-Ni alloy or a Ti
-Ni-X (X = Fe, Co, Cu) alloy,
It is characterized by containing 111 or two or more kinds of rare earth elements of quintuple it- or less.
次に、本発明における、添加元素の含有量の範囲の限定
理由について述べる０
５重量−を越える含有量においては、酸化物等の化合物
が多く存在するようになｐ１合金の加工性および繰シ返
し形状記憶回復性を劣化させる。Next, we will discuss the reasons for limiting the content range of additive elements in the present invention.When the content exceeds 0.5 weight, there are many compounds such as oxides, which affects the processability of the P1 alloy. This causes deterioration of shape memory recovery properties.
なお、０．５重量−未満の微量含有でも効果が認められ
るが、好ましくは０．５〜３．０重量−の範囲であるこ
とが望ましい。Although the effect is recognized even when the content is in a trace amount of less than 0.5 weight, it is preferably in the range of 0.5 to 3.0 weight.
以下に、本発明を実施例に基づき説明する。The present invention will be explained below based on examples.
実施例
第１表に示す権々の合金をアルゴン中にてアーク溶解し
た後、１０００℃にて２時間真空焼鈍を行って均一化処
理を施し、その後７００〜８００℃にて熱間スウエージ
ングを行い３φの丸棒とした。この丸棒を史に６００〜
８００ｃにて歪取ｐ焼鈍を繰シ返しながら、冷間伸線を
行い、０．５φの細線に加工した。Examples The alloys shown in Table 1 were arc melted in argon, vacuum annealed at 1000°C for 2 hours to homogenize them, and then hot swaged at 700 to 800°C. It was made into a 3φ round bar. 600~ to make this round stick into history
While repeating strain relief p annealing at 800c, cold wire drawing was performed to form a thin wire of 0.5φ.
次に、この細線を７５０℃にて１時間真空焼鈍を行い、
その後３００℃にて１時間形状記憶処理を行い、真っす
ぐな細線を作製した０この真っすぐな細線に引張応力を
加えることにより８畳の歪を付加した後、１００℃に加
熱し、元の長さに回復させる操作を繰に返し行い形状回
復率を測定した０その結果を第１図に、希土類元素無添
加の合金と比較して示す。Next, this thin wire was vacuum annealed at 750°C for 1 hour.
After that, shape memory treatment was performed at 300℃ for 1 hour to create a straight thin wire.After adding a strain of 8 tatami by applying tensile stress to this straight thin wire, it was heated to 100℃ and returned to its original length. The shape recovery rate was measured by repeating the operation to recover the shape. The results are shown in FIG. 1 in comparison with an alloy to which no rare earth elements were added.
第１図から明らかなように無添加の合金では、１５回以
上のサイクルにおいて回復率の低下を生じるが、希土類
元素を添加した合金では、１５回以上のサイクルにおい
ても回復率が増大してお勤、繰り返し形状記憶回復性に
優れているものである０As is clear from Figure 1, in the case of alloys without additives, the recovery rate decreases after 15 cycles or more, but in the case of alloys containing rare earth elements, the recovery rate increases even after 15 cycles. 0, which has excellent shape memory recovery properties after repeated use.
第１図は本発明合金の回復率とサイクル数との関係を示
す図である。
代理人 弁理士 本 間 崇発−；
グ 図
廿、イクル敷（＠）FIG. 1 is a diagram showing the relationship between the recovery rate and the number of cycles for the alloy of the present invention. Agent: Patent attorney Takahiro Honma;
Gu diagram, Ikuru Shiki (@)
Claims (1)
・、Ｃｏ、Ｃｕ）合金に、５重量−以下の希土類元素を
１棟または２種以上含有せしめたことを特徴とする形状
記憶合金。One round of Ti-'Ni alloy is TI -Ni -X (X-F
A shape memory alloy characterized by containing one or more rare earth elements of 5 weight or less in a Co, Cu) alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3888582A JPS58157935A (en) | 1982-03-13 | 1982-03-13 | Shape memory alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3888582A JPS58157935A (en) | 1982-03-13 | 1982-03-13 | Shape memory alloy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58157935A true JPS58157935A (en) | 1983-09-20 |
Family
ID=12537661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3888582A Pending JPS58157935A (en) | 1982-03-13 | 1982-03-13 | Shape memory alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58157935A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4533411A (en) * | 1983-11-15 | 1985-08-06 | Raychem Corporation | Method of processing nickel-titanium-base shape-memory alloys and structure |
| JPS60251241A (en) * | 1984-05-25 | 1985-12-11 | Sumitomo Electric Ind Ltd | Shape memory alloy |
| US4586969A (en) * | 1984-05-09 | 1986-05-06 | Kyoto University | Fe-Ni-Ti-Co alloy with shape memory effect and pseudo-elasticity and method of producing the same |
| JPS61210142A (en) * | 1985-03-14 | 1986-09-18 | Mitsui Eng & Shipbuild Co Ltd | Ni-ti alloy having superior shock resistance and its manufacture |
| US6077369A (en) * | 1994-09-20 | 2000-06-20 | Nippon Steel Corporation | Method of straightening wire rods of titanium and titanium alloy |
| CN100347323C (en) * | 2004-12-29 | 2007-11-07 | 同济大学 | Ti-Ni base shape memory alloy and method for preparing same |
| US20080053577A1 (en) * | 2006-09-06 | 2008-03-06 | Cook Incorporated | Nickel-titanium alloy including a rare earth element |
| GB2475340A (en) * | 2009-11-17 | 2011-05-18 | Cook Inc Inc | A Ni-Ti-rare earth alloy and a method of processing a Ni-Ti-rare earth alloy |
| US8801875B2 (en) | 2007-12-21 | 2014-08-12 | Cook Medical Technologies Llc | Radiopaque alloy and medical device made of this alloy |
| US9212409B2 (en) | 2012-01-18 | 2015-12-15 | Cook Medical Technologies Llc | Mixture of powders for preparing a sintered nickel-titanium-rare earth metal (Ni-Ti-RE) alloy |
| US10000827B2 (en) | 2011-10-21 | 2018-06-19 | University Of Limerick | Method of forming a sintered nickel-titanium-rare earth (Ni—Ti—RE) alloy |
-
1982
- 1982-03-13 JP JP3888582A patent/JPS58157935A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4533411A (en) * | 1983-11-15 | 1985-08-06 | Raychem Corporation | Method of processing nickel-titanium-base shape-memory alloys and structure |
| US4586969A (en) * | 1984-05-09 | 1986-05-06 | Kyoto University | Fe-Ni-Ti-Co alloy with shape memory effect and pseudo-elasticity and method of producing the same |
| JPS60251241A (en) * | 1984-05-25 | 1985-12-11 | Sumitomo Electric Ind Ltd | Shape memory alloy |
| JPS61210142A (en) * | 1985-03-14 | 1986-09-18 | Mitsui Eng & Shipbuild Co Ltd | Ni-ti alloy having superior shock resistance and its manufacture |
| JPH0429727B2 (en) * | 1985-03-14 | 1992-05-19 | ||
| US6077369A (en) * | 1994-09-20 | 2000-06-20 | Nippon Steel Corporation | Method of straightening wire rods of titanium and titanium alloy |
| CN100347323C (en) * | 2004-12-29 | 2007-11-07 | 同济大学 | Ti-Ni base shape memory alloy and method for preparing same |
| US20080053577A1 (en) * | 2006-09-06 | 2008-03-06 | Cook Incorporated | Nickel-titanium alloy including a rare earth element |
| WO2008030517A1 (en) * | 2006-09-06 | 2008-03-13 | Cook Incorporated | Nickel-titanium alloy including a rare earth element |
| JP2010502842A (en) * | 2006-09-06 | 2010-01-28 | クック・インコーポレイテッド | Nickel-titanium alloy containing rare earth elements |
| US9873933B2 (en) | 2006-09-06 | 2018-01-23 | Cook Medical Technologies Llc | Nickel-titanium alloy including a rare earth element |
| US9103006B2 (en) | 2006-09-06 | 2015-08-11 | Cook Medical Technologies Llc | Nickel-titanium alloy including a rare earth element |
| US8801875B2 (en) | 2007-12-21 | 2014-08-12 | Cook Medical Technologies Llc | Radiopaque alloy and medical device made of this alloy |
| JP2013510955A (en) * | 2009-11-17 | 2013-03-28 | クック メディカル テクノロジーズ エルエルシー | Nickel-titanium-rare earth alloy and alloy processing method |
| US8440031B2 (en) | 2009-11-17 | 2013-05-14 | Cook Medical Technologies Llc | Nickel-titanium-rare earth alloy and method of processing the alloy |
| GB2475340B (en) * | 2009-11-17 | 2013-03-27 | Univ Limerick | Nickel-titanium alloy and method of processing the alloy |
| US9074274B2 (en) | 2009-11-17 | 2015-07-07 | Cook Medical Technologies Llc | Nickel-titanium-rare earth alloy and method of processing the alloy |
| WO2011062863A1 (en) * | 2009-11-17 | 2011-05-26 | Cook Incorporated | Nickel-titanium-rare earth alloy and method of processing the alloy |
| JP2017014623A (en) * | 2009-11-17 | 2017-01-19 | クック・メディカル・テクノロジーズ・リミテッド・ライアビリティ・カンパニーＣｏｏｋ Ｍｅｄｉｃａｌ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ｌｌｃ | Nickel-titanium-rare earth alloy and method of processing alloy |
| GB2475340A (en) * | 2009-11-17 | 2011-05-18 | Cook Inc Inc | A Ni-Ti-rare earth alloy and a method of processing a Ni-Ti-rare earth alloy |
| US10000827B2 (en) | 2011-10-21 | 2018-06-19 | University Of Limerick | Method of forming a sintered nickel-titanium-rare earth (Ni—Ti—RE) alloy |
| US10563291B2 (en) | 2011-10-21 | 2020-02-18 | University Of Limerick | Method of forming a sintered nickel-titanium-rare earth (Ni—Ti—Re) alloy |
| US9212409B2 (en) | 2012-01-18 | 2015-12-15 | Cook Medical Technologies Llc | Mixture of powders for preparing a sintered nickel-titanium-rare earth metal (Ni-Ti-RE) alloy |
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