JP2778041B2 - Ni-base heat-resistant alloy - Google Patents
Ni-base heat-resistant alloyInfo
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- JP2778041B2 JP2778041B2 JP63175471A JP17547188A JP2778041B2 JP 2778041 B2 JP2778041 B2 JP 2778041B2 JP 63175471 A JP63175471 A JP 63175471A JP 17547188 A JP17547188 A JP 17547188A JP 2778041 B2 JP2778041 B2 JP 2778041B2
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Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、高温強度、高温下における耐酸化性が優れ
た酸化物分散強化型のNi基耐熱合金に関する。Description: TECHNICAL FIELD The present invention relates to an oxide dispersion-strengthened Ni-base heat-resistant alloy having excellent high-temperature strength and high-temperature oxidation resistance.
（従来の技術） 航空機や自動車などに搭載される燃焼機関に対しては
高出力化、低燃費化への要求が強い。その要求を満すた
めに、これら燃焼機関をより高い温度で作動せしめると
いうことが行なわれている。(Prior Art) There is a strong demand for higher output and lower fuel consumption for combustion engines mounted on aircraft and automobiles. In order to meet the demand, it has been practiced to operate these combustion engines at higher temperatures.
作動温度の上昇ということは、これら燃焼機関を構成
する部材の材料に対し、優れた高温強度、高温下におけ
る優れた耐酸化性を要求することになる。An increase in the operating temperature requires that the materials of the members constituting these combustion engines have excellent high-temperature strength and excellent oxidation resistance at high temperatures.
また、工業用加熱炉のような1200℃以上の燃焼雰囲気
下で使用される高温炉においても、それを構成する材料
には、高温強度、耐酸化性に優れるという特性が要求さ
れる。Further, even in a high-temperature furnace used in a combustion atmosphere of 1200 ° C. or more, such as an industrial heating furnace, the material constituting the high-temperature furnace is required to have characteristics of excellent high-temperature strength and oxidation resistance.
従来から、このような用途に対しては各種の耐熱合金
が提案されているが、その代表例としてはFe−26Cr−35
Ni−15Co−3Wで示されるSupertherm（耐熱合金）が知ら
れている。Conventionally, various heat-resistant alloys have been proposed for such applications, but a typical example is Fe-26Cr-35.
Supertherm (heat-resistant alloy) represented by Ni-15Co-3W is known.
（発明が解決しようとする課題） しかしながら、上記したインコネル合金もその高温強
度が必ずしも高いとはいえず、前述したように作動温度
が上昇しつつある燃焼機関を構成する材料としては不充
分である。(Problems to be Solved by the Invention) However, the high-temperature strength of the above-mentioned Inconel alloy is not always high, and as described above, it is insufficient as a material for constituting a combustion engine whose operating temperature is increasing. .
本発明は、1200℃以上の燃焼雰囲気下においても優れ
た高温強度と耐酸化性を備えた新規組成のNi基耐熱合金
の提供を目的とする。An object of the present invention is to provide a novel Ni-base heat-resistant alloy having excellent high-temperature strength and oxidation resistance even in a combustion atmosphere of 1200 ° C. or higher.
（課題を解決するための手段・作用） 上記目的を達成するために、本発明においては、第１
の合金として、Cr:25重量％を超え40重量％以下;Co:10
重量％を超え40重量％以下；粒径が1.0μｍ以下で、希
土類元素の酸化物から選ばれる少なくとも１種の酸化
物:0.05〜3.0重量％を必須成分として含有し、残部が実
質的にNiであることを特徴とするNi基耐熱合金が提供さ
れる。(Means / Actions for Solving the Problems) In order to achieve the above object, in the present invention, the first
As an alloy of Cr: more than 25 wt% and less than 40 wt%; Co: 10
More than 40% by weight and not more than 40% by weight; at least one oxide selected from the oxides of rare earth elements having a particle size of 1.0 μm or less: 0.05 to 3.0% by weight as an essential component, and the balance being substantially Ni A Ni-based heat-resistant alloy is provided.
また、第２の合金として、Cr:25重量％を超え40重量
％以下;Co:10重量％を超え40重量％以下；粒径が1.0μ
ｍ以下で、希土類元素の酸化物から選ばれる少なくとも
１種の酸化物:0.05〜3.0重量％;Tiまたは／およびAl:0.
1〜2.0重量％を含有し、残部が実質的にNiであるNi基耐
熱合金が提供される。Further, as the second alloy, Cr: more than 25% by weight and 40% by weight or less; Co: more than 40% by weight and 40% by weight or less;
m or less, at least one oxide selected from the oxides of rare earth elements: 0.05 to 3.0% by weight; Ti or / and Al: 0.
A Ni-based heat-resistant alloy containing 1 to 2.0% by weight, with the balance being substantially Ni, is provided.
更に、第３の合金として、Cr:25重量％を超え40重量
％以下;Co:10重量％を超え40重量％以下；粒径が1.0μ
ｍ以下で、希土類元素の酸化物から選ばれる少なくとも
１種の酸化物:0.05〜3.0重量％;B:0.005〜0.05重量％を
含有し、残部が実質的にNiであるNi基耐熱合金が提供さ
れる。Further, as a third alloy, Cr: more than 25% by weight and 40% by weight or less; Co: 10% by weight or more and 40% by weight or less;
m or less, at least one oxide selected from oxides of rare earth elements: 0.05 to 3.0% by weight; B: 0.005 to 0.05% by weight, and the balance is substantially Ni. Is done.
更にまた、第４の合金として、Cr:25重量％を超え40
重量％以下;Co:10重量％を超え40重量％以下；粒径が1.
0μｍ以下で、希土類元素の酸化物から選ばれる少なく
とも１種の酸化物:0.05〜3.0重量％;Tiまたは／およびA
l:0.1〜2.0重量％;B:0.005〜0.05重量％を含有し、残部
が実質的にNiであるNi基耐熱合金が提供される。Further, as a fourth alloy, Cr: more than 25% by weight and 40%
% By weight; Co: more than 10% by weight and 40% by weight or less;
0 μm or less, at least one oxide selected from oxides of rare earth elements: 0.05 to 3.0% by weight; Ti or / and A
The present invention provides a Ni-based heat-resistant alloy containing l: 0.1 to 2.0% by weight; B: 0.005 to 0.05% by weight, with the balance being substantially Ni.
更にまた、第５の合金として、Cr:25重量％を超え40
重量％以下;Co:10重量％を超え40重量％以下；粒径が1.
0μｍ以下で、希土類元素の酸化物から選ばれる少なく
とも１種の酸化物:0.05〜3.0重量％;C:0.05〜0.5重量
％,Moまたは／およびW:1.0〜6.0重量％を含有し、残部
が実質的にNiであるNi基耐熱合金が提供される。Furthermore, as the fifth alloy, Cr: more than 25% by weight and 40%
% By weight; Co: more than 10% by weight and 40% by weight or less;
0 μm or less, at least one oxide selected from rare earth oxides: 0.05 to 3.0% by weight; C: 0.05 to 0.5% by weight, Mo or / and W: 1.0 to 6.0% by weight, with the balance being A Ni-based heat resistant alloy that is substantially Ni is provided.
更にまた、第６の合金として、Cr:25重量％を超え35
重量％以下;Co:15重量％を超え40重量％以下；粒径が1.
0μｍ以下で、希土類元素の酸化物から選ばれる少なく
とも１種の酸化物:0.05〜3.0重量％;Tiまたは／およびA
l:0.1〜2.0重量％;C:0.05〜0.5重量％;Moまたは／およ
びW:1.0〜6.0重量％を含有し、残部が実質的にNiである
Ni基耐熱合金が提供される。Furthermore, as the sixth alloy, Cr: more than 25% by weight and 35%
% By weight; Co: more than 15% by weight and 40% by weight or less;
0 μm or less, at least one oxide selected from oxides of rare earth elements: 0.05 to 3.0% by weight; Ti or / and A
l: 0.1 to 2.0% by weight; C: 0.05 to 0.5% by weight; Mo or / and W: 1.0 to 6.0% by weight, with the balance being substantially Ni
A Ni-base heat-resistant alloy is provided.
更にまた、第７の合金として、Cr:25重量％を超え35
重量％以下;Co:15重量％を超え40重量％以下；粒径が1.
0μｍ以下で、希土類元素の酸化物から選ばれる少なく
とも１種の酸化物:0.05〜3.0重量％;B:0.005〜0.05重量
％;C:0.05〜0.5重量％;Moまたは／およびW:1.0〜6.0重
量％を含有し、残部が実質的にNiであるNi基耐熱合金が
提供される。Furthermore, as the seventh alloy, Cr: more than 25% by weight and 35%
% By weight; Co: more than 15% by weight and 40% by weight or less;
0 μm or less, at least one oxide selected from oxides of rare earth elements: 0.05 to 3.0% by weight; B: 0.005 to 0.05% by weight; C: 0.05 to 0.5% by weight; Mo or / and W: 1.0 to 6.0% A Ni-base heat-resistant alloy is provided, wherein the Ni-base heat-resistant alloy contains 0.1 wt% and the balance is substantially Ni.
更にまた、第８の合金として、Cr:25重量％を超え35
重量％以下;Co:15重量％を超え40重量％以下；粒径が1.
0μｍ以下で、希土類元素の酸化物から選ばれる少なく
とも１種の酸化物:0.05〜3.0重量％;Tiまたは／およびA
l:0.1〜2.0重量％;B:0.005〜0.05重量％;C:0.05〜0.5重
量％;Moまたは／およびW:1.0〜6.0重量％を含有し、残
部が実質的にNiであるNi基耐熱合金が提供される。Furthermore, as an eighth alloy, Cr: more than 25% by weight and 35%
% By weight; Co: more than 15% by weight and 40% by weight or less;
0 μm or less, at least one oxide selected from oxides of rare earth elements: 0.05 to 3.0% by weight; Ti or / and A
l: 0.1-2.0% by weight; B: 0.005-0.05% by weight; C: 0.05-0.5% by weight; Mo or / and W: 1.0-6.0% by weight, with the balance being substantially Ni An alloy is provided.
本発明のNi基合金はNiをバランス成分とするが、第１
の必須成分であるCrは高温下における耐酸化性の向上に
寄与する成分であって、その含有量は25重量％を超え40
重量％以下の範囲に設定される。その含有量が25重量％
以下の場合には、上記効果が充分に発揮されず、また40
重量％を超える場合はσ相が生成しはじめて、高温強度
低下、靭性の低下を招いて不都合である。好ましい含有
量は28〜35重量％である。The Ni-based alloy of the present invention has Ni as a balance component.
Cr, an essential component of, is a component that contributes to the improvement of oxidation resistance at high temperatures, and its content exceeds 25% by weight and 40%.
It is set in the range of not more than weight%. 25% by weight
In the following cases, the above effects are not sufficiently exhibited, and 40
If the content exceeds 10% by weight, the σ phase starts to be formed, which is disadvantageous in that the high-temperature strength and the toughness are reduced. The preferred content is 28-35% by weight.
Coは融点の向上、高温強度の確保に寄与する成分で、
その含有量は10〜40重量％の範囲に設定される。含有量
が10重量％以下の場合は、上記効果が充分に発揮され
ず、また40重量％未満の場合は、耐酸化性が低下するば
かりではなく、高価なCoの使用量が増加するので経済的
に不利益である。好ましい含有量は15〜30重量％であ
る。Co is a component that contributes to improving the melting point and ensuring high-temperature strength.
Its content is set in the range of 10 to 40% by weight. When the content is 10% by weight or less, the above effects are not sufficiently exerted. When the content is less than 40% by weight, not only oxidation resistance decreases, but also the amount of expensive Co used increases, so that economy is increased. Disadvantageous. The preferred content is 15 to 30% by weight.
酸化物は、合金の母材中に微粒子として分散すること
により該合金を分散強化型にしてその高温強度の向上に
寄与するとともに、耐酸化性の向上に資する成分であっ
て、その粒径は1.0μｍ以下、その含有量は0.05〜3.0重
量％の範囲に設定される。Oxide is a component that contributes to improving the high-temperature strength of the alloy by dispersing as fine particles in the base material of the alloy, thereby improving the high-temperature strength of the alloy, and contributing to the improvement of oxidation resistance. 1.0 μm or less, the content is set in the range of 0.05 to 3.0% by weight.
粒径が1.0μｍより大きい酸化物である場合は、上記
した分散強化の効果が現出しないためその高温強度が充
分に確保されない。また、含有量が0.05重量％未満の場
合は、上記効果が得られず、また3.0重量％を超える場
合は、上記効果が減退するのみならず更に靭性の低下を
招くようになる。好ましい含有量は0.1〜1.0重量％であ
る。When the oxide has a particle size larger than 1.0 μm, the above-mentioned effect of dispersion strengthening does not appear, so that its high-temperature strength cannot be sufficiently secured. If the content is less than 0.05% by weight, the above effects cannot be obtained. If the content exceeds 3.0% by weight, not only the above effects are reduced but also the toughness is further reduced. The preferred content is 0.1-1.0% by weight.
酸化物としては、Y2O3，ThO2，Gd2O3のような酸化物
をそれぞれ単独で用いてもよいし、また２種類以上を適
宜に組合せた混合物として用いてもよい。これら酸化物
のうち、とくにY2O3は好適なものである。As the oxides, oxides such as Y 2 O 3 , ThO 2 , and Gd 2 O 3 may be used alone or as a mixture of two or more kinds as appropriate. Among these oxides, Y 2 O 3 is particularly preferable.
本発明のNi基合金は上記の組成を必須として構成され
るが、更に、以下の成分を含有する合金も包含される。The Ni-based alloy of the present invention has the above-mentioned composition as an essential component, and further includes an alloy containing the following components.
まず、上記した必須成分に加えて、Ti,Al,Bの１種ま
たは２種以上が下記の態様で含有されている合金であ
る。First, an alloy containing one or more of Ti, Al, and B in addition to the above essential components in the following manner.
すなわち、Tiが含有される場合、その含有量は0.1〜
2.0重量％に設定される。このTiは高温下における耐酸
化性の向上に寄与する成分で、その含有量が0.1重量％
未満の場合は上記効果が得られず、また2.0重量％を超
える場合は、上記効果は飽和してしまうだけではなく、
融点の低下や靭性の低下を招いて不都合である。好まし
くは0.3〜1.0重量％である。That is, when Ti is contained, the content is 0.1 to
Set to 2.0% by weight. This Ti is a component that contributes to the improvement of oxidation resistance at high temperatures, and its content is 0.1% by weight.
If the amount is less than 2.0% by weight, the above effect cannot be obtained.
This is disadvantageous in that the melting point and the toughness decrease. Preferably it is 0.3 to 1.0% by weight.
Alは上記したTiと全く同様の挙動を示す成分で、それ
が含有される場合、その含有量はTiの場合と同様の理由
で0.1〜2.0重量％の範囲に設定される。好ましくは0.3
〜1.0重量％である。Al is a component exhibiting exactly the same behavior as Ti described above, and when it is contained, its content is set in the range of 0.1 to 2.0% by weight for the same reason as in the case of Ti. Preferably 0.3
~ 1.0% by weight.
また、Ｂは結晶粒界を強化して合金の高温強度の向上
に資する成分であるが、それが含有される場合は、その
含有量は0.005〜0.05重量％の範囲に設定される。含有
量が0.005重量％未満の場合は上記した効果が得られ
ず、また0.05重量％を超える場合は逆に靭性低下を招い
て不都合である。好ましくは0.01〜0.03重量％である。B is a component that contributes to strengthening the grain boundaries and improving the high-temperature strength of the alloy. When B is contained, its content is set in the range of 0.005 to 0.05% by weight. When the content is less than 0.005% by weight, the above-mentioned effects cannot be obtained, and when the content exceeds 0.05% by weight, toughness is disadvantageously reduced. Preferably it is 0.01 to 0.03% by weight.
これらの３成分はそれぞれ単独で配合されてもよく、
また２種以上を適宜に組合せて配合されてもよい。ただ
し、配合する成分については、その成分の含有量は上記
した範囲内となるように調節して配合することが必要で
ある。These three components may be blended independently,
Also, two or more kinds may be appropriately combined and blended. However, it is necessary to adjust the content of the components to be blended so as to be within the above-mentioned range.
他の合金は、上記した必須成分に加えて、更に、C:0.
05〜0.5重量％;Moまたは／およびW:1.0〜6.0重量％含有
せしめたものである。Other alloys, in addition to the essential components described above, further, C: 0.
05 to 0.5% by weight; Mo or / and W: 1.0 to 6.0% by weight.
ここで、Ｃは、このＣと同時に配合されるMoまたは／
およびＷと一緒になって微細な炭化物を形成し、母材中
に均一分散することにより合金の高温強度向上に寄与す
る成分であり、その含有量が0.05重量％未満の場合は上
記効果が得られず、また0.5重量％を超える場合は靭性
の低下を招くようになる。好ましい含有量は0.1〜0.3重
量％である。Here, C is Mo or / and is mixed simultaneously with this C.
Is a component that forms fine carbides together with W and contributes to the improvement of the high-temperature strength of the alloy by being uniformly dispersed in the base material. When the content is less than 0.05% by weight, the above effects are obtained. If not more than 0.5% by weight, the toughness is reduced. The preferred content is 0.1-0.3% by weight.
Moまたは／およびＷは、Ｃと一緒になって上記した合
金の高温強度向上に寄与すると同時に、母材に固溶して
固溶強化の効果を発揮する成分である。これらはそれぞ
れ単独で用いてもよいし一緒にした混合粉として用いて
もよい。Moまたは／およびＷの含有量が1.0重量％未満
の場合は上記効果が得られず、逆に6.0重量％を超える
場合は、耐酸化性が低下し、更には靭性の低下を招いて
不都合である。好ましい含有量は、3.0〜4.5重量％であ
る。Mo and / or W is a component that, together with C, contributes to improving the high-temperature strength of the above-mentioned alloy and, at the same time, forms a solid solution with the base material to exhibit the effect of solid solution strengthening. These may be used alone or as a mixed powder. When the content of Mo and / or W is less than 1.0% by weight, the above effects cannot be obtained. On the other hand, when the content exceeds 6.0% by weight, the oxidation resistance is reduced, and the toughness is further reduced. is there. The preferred content is 3.0-4.5% by weight.
更に他の合金は、前述した必須成分に加えて、Ti,Al,
Bの群から選ばれる少なくとも１種の成分、C,Moまたは
／およびＷを各合金につき上記した含有量の範囲内で同
時に含有せしめたものである。Still other alloys include Ti, Al,
At least one component selected from the group B, C, Mo or / and W is simultaneously contained within the above-mentioned content range for each alloy.
本発明のNi基合金は、次のようにして調製することが
できる。The Ni-based alloy of the present invention can be prepared as follows.
すなわち、各成分を所定の量比で混合し、この混合粉
にアトライター処理を施して各成分間で機械的合金化
（mechanical alloying）を進め、得られたフレークを
所定の温度、圧で熱間加工すればよい。That is, each component is mixed at a predetermined ratio, and this mixed powder is subjected to an attritor treatment to promote mechanical alloying between the components, and the obtained flakes are heated at a predetermined temperature and pressure. What is necessary is just to work in between.
（発明の実施例） 実施例１〜20 第１表に示した割合（重量％）で表示の成分をアトラ
イターに投入し、約20時間、アルゴン雰囲気中で機械的
合金化を進めた。得られたフレークを直径65mmの軟鋼製
の缶体に充填し、1500tonプレスを用いて、1150℃で熱
間押出し加工を行ない、直径20mmの試料とした。(Examples of the Invention) Examples 1 to 20 Components shown in the ratio (% by weight) shown in Table 1 were charged into an attritor, and mechanical alloying was carried out in an argon atmosphere for about 20 hours. The obtained flakes were filled into a mild steel can body having a diameter of 65 mm, and subjected to hot extrusion at 1150 ° C. using a 1500 ton press to obtain a sample having a diameter of 20 mm.
これらの試料につき、JIS G0567に準拠して1000℃に
おける引張強さ（kg f/mm2）と伸び率（％）を測定し
た。For these samples, the tensile strength (kg f / mm 2 ) and elongation (%) at 1000 ° C. were measured according to JIS G0567.
また、各試料を1250℃の堅型炉（大気雰囲気）中に96
時間放置し、そのときの重量減を測定しその値を試料表
面積と放置時間で除し腐食減量（g/m2・hr）として算出
し耐酸化性を判定した。以上の結果を一括して第１表に
示した。Each sample was placed in a solid furnace at 1250 ° C (atmospheric atmosphere) for 96 hours.
The sample was left for a period of time, the weight loss at that time was measured, and the value was divided by the surface area of the sample and the standing time to calculate the corrosion loss (g / m 2 · hr) to determine the oxidation resistance. The above results are collectively shown in Table 1.
（発明の効果） 以上の説明で明らかなように、本発明のNi基耐熱合金
は、その高温強度が大きく、1250℃においても耐酸化性
が優れており、例えば航空機や自動車等の燃焼機関、高
温炉のような1250℃以上の燃焼雰囲気に暴される部材を
構成する材料に用いて有用である。 (Effects of the Invention) As is clear from the above description, the Ni-based heat-resistant alloy of the present invention has high strength at high temperatures and excellent oxidation resistance even at 1250 ° C. It is useful as a material for components that are exposed to a combustion atmosphere of 1250 ° C. or higher, such as a high-temperature furnace.
フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) C22C 19/00 - 19/05 C22C 30/00Continuation of front page (58) Field surveyed (Int. Cl. 6 , DB name) C22C 19/00-19/05 C22C 30/00
Claims (7)
量％を超え40重量％以下；粒径が1.0μｍ以下で、希土
類元素の酸化物から選ばれる少なくとも１種の酸化物:
0.05〜3.0重量％を必須成分として含有し、残部が実質
的にNiであることを特徴とするNi基耐熱合金。1. Cr: more than 25% by weight and 40% by weight or less; Co: 10% by weight or more and 40% by weight or less; at least one oxide selected from the oxides of rare earth elements having a particle size of 1.0 μm or less. Stuff:
A Ni-based heat-resistant alloy containing 0.05 to 3.0% by weight as an essential component, with the balance being substantially Ni.
有する請求項１のNi基耐熱合金。2. The Ni-base heat-resistant alloy according to claim 1, containing 0.1 to 2.0% by weight of Ti or / and Al.
または２のNi基耐熱合金。3. The composition according to claim 1, wherein the content of B is 0.005 to 0.05% by weight.
Or 2, Ni-base heat-resistant alloy.
0〜6.0重量％を含有する請求項１のNi基耐熱合金。4. C: 0.05 to 0.5% by weight; Mo or / and W: 1.
2. The Ni-base heat-resistant alloy according to claim 1, containing 0 to 6.0% by weight.
量％を超え40重量％以下；粒径が1.0μｍ以下で、希土
類元素の酸化物から選ばれる少なくとも１種の酸化物:
0.05〜3.0重量％;Tiまたは／およびAl:0.1〜2.0重量％;
C:0.05〜0.5重量％;Moまたは／およびW:1.0〜6.0重量％
を含有し、残部が実質的にNiであることを特徴とするNi
基耐熱合金。5. Cr: more than 25% by weight and not more than 35% by weight; Co: more than 15% by weight and not more than 40% by weight; at least one oxide selected from the oxides of rare earth elements having a particle size of not more than 1.0 μm. Stuff:
0.05-3.0% by weight; Ti or / and Al: 0.1-2.0% by weight;
C: 0.05-0.5% by weight; Mo or / and W: 1.0-6.0% by weight
Ni is characterized in that the balance is substantially Ni
Base heat-resistant alloy.
量％を超え40重量％以下；粒径が1.0μｍ以下で、希土
類元素の酸化物から選ばれる少なくとも１種の酸化物:
0.05〜3.0重量％;B:0.005〜0.05重量％;C:0.05〜0.5重
量％;Moまたは／およびW:1.0〜6.0重量％を含有し、残
部が実質的にNiであることを特徴とするNi基耐熱合金。6. Cr: more than 25% by weight and not more than 35% by weight; Co: more than 15% by weight and not more than 40% by weight; at least one oxide selected from the oxides of rare earth elements having a particle size of not more than 1.0 μm. Stuff:
B: 0.005 to 0.05% by weight; C: 0.05 to 0.5% by weight; Mo or / and W: 1.0 to 6.0% by weight, with the balance being substantially Ni Ni-base heat-resistant alloy.
量％を超え40重量％以下；粒径が1.0μｍ以下で、希土
類元素の酸化物から選ばれる少なくとも１種の酸化物:
0.05〜3.0重量％;Tiまたは／およびAl:0.1〜2.0重量％;
B:0.005〜0.05重量％;C:0.05〜0.5重量％;Moまたは／お
よびW:1.0〜6.0重量％を含有し、残部が実質的にNiであ
ることを特徴とするNi基耐熱合金。7. Cr: more than 25% by weight and not more than 35% by weight; Co: more than 15% by weight and not more than 40% by weight; at least one oxide selected from oxides of rare earth elements having a particle size of not more than 1.0 μm. Stuff:
0.05-3.0% by weight; Ti or / and Al: 0.1-2.0% by weight;
A Ni-base heat-resistant alloy containing B: 0.005 to 0.05% by weight; C: 0.05 to 0.5% by weight; Mo or / and W: 1.0 to 6.0% by weight, with the balance being substantially Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63175471A JP2778041B2 (en) | 1988-07-14 | 1988-07-14 | Ni-base heat-resistant alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63175471A JP2778041B2 (en) | 1988-07-14 | 1988-07-14 | Ni-base heat-resistant alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0225536A JPH0225536A (en) | 1990-01-29 |
| JP2778041B2 true JP2778041B2 (en) | 1998-07-23 |
Family
ID=15996639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63175471A Expired - Lifetime JP2778041B2 (en) | 1988-07-14 | 1988-07-14 | Ni-base heat-resistant alloy |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2778041B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4029477A (en) * | 1975-10-29 | 1977-06-14 | General Electric Company | Coated Ni-Cr base dispersion-modified alloy article |
| JPS58193335A (en) * | 1982-05-06 | 1983-11-11 | Sumitomo Electric Ind Ltd | Dispersion strengthened type nickel base heat resistant sintered alloy and preparation thereof |
| JPH01188645A (en) * | 1988-01-21 | 1989-07-27 | Mitsubishi Heavy Ind Ltd | Oxide dispersion strengthened undirectional solidified ni-based alloy and its manufacture |
-
1988
- 1988-07-14 JP JP63175471A patent/JP2778041B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0225536A (en) | 1990-01-29 |
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