JPS62116746A - High strength lightweight sintered ti alloy - Google Patents
High strength lightweight sintered ti alloyInfo
- Publication number
- JPS62116746A JPS62116746A JP25633585A JP25633585A JPS62116746A JP S62116746 A JPS62116746 A JP S62116746A JP 25633585 A JP25633585 A JP 25633585A JP 25633585 A JP25633585 A JP 25633585A JP S62116746 A JPS62116746 A JP S62116746A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- phase
- sintered
- compound
- forming component
- 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.)
- Granted
Links
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、戦域にして、特に高い高温強度を有し、か
つ耐酸１ヒ性にも丁ぐれた焼結Ｔｉ合金（二関するもの
である。[Detailed Description of the Invention] [Field of Industrial Application] This invention is a sintered Ti alloy that has particularly high high-temperature strength and excellent acid resistance and arsenic resistance. .
［従来の技術］
従来、一般に、例えばジェットエンジン用フンプレツサ
のディスクやブレード、さらに航空機の構造部材などと
して各種のＴｉ合金が用いられている。[Prior Art] Conventionally, various Ti alloys have been generally used, for example, as discs and blades of jet engine humplets, as well as structural members of aircraft.
このＴｉ合金には、いずれも重を鴫で、例えばＴｉ−Ｔ
ｉ−５Ｔｏ、５憾Ｓｎに代表されるα相組織のＴｉ合金
や、回じ＜Ｔｉ −６４Ｍ −４４Ｖに代表されるα＋
β相組織を有するＴｉ合金、さらにＴｉ−１３％Ｖ−１
１４Ｃｒ −３１ＡＡ％Ｔｉ −１０％Ｖ−２４Ｆｅ−
３１ＡＪ、あるいはＴｉ −１５４Ｖ −３％Ｃｒ −
３ｑｂＡＪ −３４Ｓｎに代表されるβ相組織を府下る
Ｔｉ合金（以下β相Ｔｉ合金という）が知られている。This Ti alloy has a heavy weight, for example, Ti-T.
Ti alloys with α phase structure represented by i-5To and 5Sn, and α+ represented by < Ti -64M -44V.
Ti alloy with β phase structure, further Ti-13%V-1
14Cr -31AA%Ti -10%V-24Fe-
31AJ, or Ti −154V −3%Cr −
Ti alloys having a β-phase structure (hereinafter referred to as β-phase Ti alloys) such as 3qbAJ-34Sn are known.
一方、これらのＴｉ合金は、比較的高い常温および高温
強度を示すものの、近年の高性能化および省エネルギー
１ヒに伴い、特に一段と商い高温強度が要求されるよう
になっており、軽槍１ヒの要求と含まって、その開発が
強く望まれている。On the other hand, although these Ti alloys exhibit relatively high strength at room temperature and high temperature, with the recent advances in high performance and energy conservation, high temperature strength has become increasingly required, and light spears and high temperature strength have become increasingly necessary. There is a strong desire for its development, including the demands of
そこで、本発明者等は、上述のような観点から研究を行
なった結果、分散相形成成分としてＴｉとＡｌの金属間
１ヒ合物（以ド’ｒｉ−Ｍ（ヒ合物という）：６０〜９
０容ｌ係を含有し、残りが素地形成成分としてのβ相Ｔ
ｉ合金からなる金属組成を有する焼結Ｔｉ合金は、上記
の従来Ｔｉ合金に比して一段と高い高温強度を有し、か
つより＠置にして、耐酸ｆヒ性にも丁ぐれているという
知見を得たのである。Therefore, as a result of research from the above-mentioned viewpoint, the present inventors found that an intermetallic compound of Ti and Al (hereinafter referred to as 'ri-M): 60 ~9
0 volume and the rest is β phase T as a matrix forming component.
Knowledge that a sintered Ti alloy having a metal composition consisting of an i-alloy has higher high-temperature strength than the above-mentioned conventional Ti alloy, is more stable, and has excellent acid resistance and arsenic resistance. I got it.
この発明は、上記知見にもとづいてなされたものであり
、Ｔｉ ＡＪｆヒ合物の含有量を６０−ｒ・９０容ｔ
４に定めたのは以下に示す理由によるものである。丁な
わち、Ｔｉ−Ａｌ、１６合物には、冷間および熱間加工
性の丁ぐれたβ相Ｔｉ合金との共存において、合金の高
温強度を向上させ、かつＴｉ −Ｍ ｆヒ合物のもつ丁
ぐれた耐酸１ヒ性および低比重によって合金の耐酸１ヒ
性を向上させると共に、＠啜【ヒをはかる作用があるが
、その會有噴が４０容ｔ１未満では前記作用に所望の効
果が得られず、一方その含有針が９０容＃憾を越えると
、素地を構成する前記β相Ｔｉ合金の含有量が相対的に
低くなり丁ぎ、これによってもたらされる丁ぐれた冷間
および熱間加工性を確保することができなくなることか
ら。This invention was made based on the above knowledge, and the content of the Ti AJf compound was reduced to 60-r/90 volume t.
The reason for setting 4 is as follows. In other words, the Ti-Al, 16 compound improves the high-temperature strength of the alloy in coexistence with the β-phase Ti alloy, which has excellent cold and hot workability, and the Ti-Mf compound. It improves the alloy's acid and arsenic resistance due to its excellent acid and arsenic resistance and low specific gravity. On the other hand, if the content of the needle exceeds 90 volumes, the content of the β-phase Ti alloy constituting the base material becomes relatively low, and the resulting cold and This is because hot workability cannot be ensured.
その含有量を４０〜９０容量憾と定めたのである。The content was set at 40 to 90 volumes.
つぎに、この発明の焼結Ｔｉ合金を実施例により具体的
に説明する。Next, the sintered Ti alloy of the present invention will be specifically explained using examples.
通常の真空アーク溶解炉を用いて溶製し、インゴットに
鋳造し、このインゴットの真空プラズマビームな用いる
回転電極法にて粉ｆヒすることによって、原料粉末とし
て、いずれも５〜５０μｍの範囲内の平均粒径を有する
。By melting using a normal vacuum arc melting furnace, casting into an ingot, and grinding this ingot using a rotating electrode method using a vacuum plasma beam, it is possible to obtain raw material powder with a particle diameter of 5 to 50 μm. It has an average particle size of
（ａ）Ｔｉ−Ｍ化合物（Ｔｉ：５０原子係、Ｍ：５０原
子幅）粉末、
（ｂ） Ｔｉ−１３，１％Ｖ−１０，９１Ｃｒ−２，
９４Ｍからなる組成（重獄憾）のβ相Ｔｉ合金（以下、
β相Ｔｉ合金（１）という）粉末、
（ｃ） Ｔｉ −１５，３４Ｖ −２，８％Ｃｒ −
３，０４八８−２．９１８ｎからなる組成（’１（ｆｌ
ｌのβ相Ｔｉ合金（以下、β相Ｔｉ合金（２）という）
粉末、（ｄ） Ｔｉ −１０，２４Ｖ−２，１４Ｆｅ
−３，０４Ｍ力らなる組成（重［１のβ相Ｔｉ合金（
以下、β相Ｔｉ合金１３）という）粉末、
をそれぞれ調製し、これら原料粉末を第１表に示される
配合組成に配合し、通常の条件Ｃ：て混合し、７５０℃
の温度にて熱間静水圧プレスを旌して、直径：５０端φ
×長さ：２００ｍの寸法をもった焼結体とし、これに温
度ニア５０’Ｃに加熱後空冷および温度： ４８０ ’
Ｃに８時間保持後空冷の熱処理を旌Ｔことによって、本
発明焼結Ｔｉ合金１−６をそれぞれ製造した。(a) Ti-M compound (Ti: 50 atoms wide, M: 50 atoms wide) powder, (b) Ti-13,1%V-10,91Cr-2,
β-phase Ti alloy (hereinafter referred to as
β-phase Ti alloy (referred to as (1)) powder, (c) Ti −15,34V −2,8%Cr −
Composition consisting of 3,0488-2.918n ('1(fl
l β-phase Ti alloy (hereinafter referred to as β-phase Ti alloy (2))
Powder, (d) Ti-10,24V-2,14Fe
-3,04M composition (heavy [1 β phase Ti alloy (
Hereinafter referred to as β-phase Ti alloy 13) powder, these raw material powders were blended into the composition shown in Table 1, and mixed under normal conditions C: 750°C.
Diameter: 50 end φ by hot isostatic pressing at a temperature of
A sintered body with a length of 200 m was heated to a temperature of 50'C and then air cooled to a temperature of 480'.
Sintered Ti alloys 1-6 of the present invention were manufactured by holding the alloys at C for 8 hours and then subjecting them to air-cooling heat treatment.
また、比較の目的で、上記の３種のβ相Ｔｉ合金粉末の
ほか、いずれも平均粒径：３０μｍを有する、Ｔｉ −
５，０％ Ｍ −２，５４８ｎからなる組成（重量％）
のα相Ｔｉ合金粉末、およびＴｉ−６，１憾Ｍ−４，０
’ｌＶからなる組成（重着％）のα＋β相Ｔｉ合金粉末
を用い、同一の条件にて、従来焼結Ｔｉ合金１〜５をそ
れぞれ製造した。For comparison purposes, in addition to the three types of β-phase Ti alloy powders mentioned above, Ti-
Composition (wt%) consisting of 5,0% M-2,548n
α-phase Ti alloy powder, and Ti-6,1 M-4,0
Conventional sintered Ti alloys 1 to 5 were each manufactured under the same conditions using α+β phase Ti alloy powder having a composition (heavy weight %) of 1V.
ついで、この結果得られた本発明焼結Ｔｉ合金１へ６お
よび従来焼結Ｔｉ合金１〜５について、常温および高温
強度を評価する目的で、常縣および温度：６００℃にお
ける降伏点を測定し、さらに比重を６１１１定した。こ
れらの６１１１定結果を第１茨に示し〔発明の効果〕
第１段に示される結果から、本発明焼結Ｔｉ合金１〜６
は、従来焼結Ｔｉ合金１〜５に比して常温強度は劣るも
のの、比較的高い値を保持しており、一方高温強度にお
いては、従来焼結Ｔｉ合金に比して一段と丁ぐれた値を
示し、かつ＠嘘であることが明らかである。Next, for the resulting sintered Ti alloys 1 to 6 of the present invention and conventional sintered Ti alloys 1 to 5, the yield point at normal temperature and temperature: 600 ° C. was measured for the purpose of evaluating the strength at room temperature and high temperature. Furthermore, the specific gravity was determined to be 6111. These 6111 constant results are shown in the first thorn [Effect of the invention] From the results shown in the first row, the sintered Ti alloys 1 to 6 of the present invention
Although the room-temperature strength is inferior to the conventional sintered Ti alloys 1 to 5, it maintains a relatively high value, while the high-temperature strength is much better than the conventional sintered Ti alloys. , and it is obvious that it is a lie.
上述のように、この発明の焼結Ｔｉ合金は、従来焼結Ｔ
ｉ合金に比して、特に高い高温強度を有するほか、＠址
でもあるので、これをジェットエンジンや航空機などの
構造部材として用いた場合、これの高性能【ヒおよび省
エネルギーｆヒがはかられ、かつＴぐれた性能を長期に
亘って発揮するものである。As mentioned above, the sintered Ti alloy of the present invention is different from the conventional sintered Ti alloy.
Compared to i-alloys, it has particularly high high-temperature strength and is also highly durable, so when it is used as a structural member for jet engines and aircraft, its high performance and energy savings can be achieved. , and exhibits superior performance over a long period of time.
Claims (1)
金属間化合物を含有し、残りが素地形成成分としてのβ
相Ｔｉ合金からなる金属組織を有することを特徴とする
高強度軽量焼結Ｔｉ合金。Contains 60 to 90% by volume of an intermetallic compound of Ti and Al as a dispersed phase forming component, and the rest is β as a matrix forming component.
A high-strength, lightweight sintered Ti alloy characterized by having a metal structure consisting of a phase Ti alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25633585A JPS62116746A (en) | 1985-11-15 | 1985-11-15 | High strength lightweight sintered ti alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25633585A JPS62116746A (en) | 1985-11-15 | 1985-11-15 | High strength lightweight sintered ti alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62116746A true JPS62116746A (en) | 1987-05-28 |
| JPS6316457B2 JPS6316457B2 (en) | 1988-04-08 |
Family
ID=17291241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25633585A Granted JPS62116746A (en) | 1985-11-15 | 1985-11-15 | High strength lightweight sintered ti alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62116746A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5728067A (en) * | 1989-01-30 | 1998-03-17 | C. R. Bard, Inc. | Rapidly exchangeable coronary catheter |
| EP0566523B1 (en) * | 1987-12-23 | 2000-03-15 | Advanced Cardiovascular Systems, Inc. | Extendable guidewire for cardiovascular procedures |
| US6129708A (en) * | 1989-01-30 | 2000-10-10 | Medtronic Ave, Inc. | Rapidly exchangeable coronary catheter |
-
1985
- 1985-11-15 JP JP25633585A patent/JPS62116746A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0566523B1 (en) * | 1987-12-23 | 2000-03-15 | Advanced Cardiovascular Systems, Inc. | Extendable guidewire for cardiovascular procedures |
| US5728067A (en) * | 1989-01-30 | 1998-03-17 | C. R. Bard, Inc. | Rapidly exchangeable coronary catheter |
| US6129708A (en) * | 1989-01-30 | 2000-10-10 | Medtronic Ave, Inc. | Rapidly exchangeable coronary catheter |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6316457B2 (en) | 1988-04-08 |
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