JPH0698481B2 - Liquid phase diffusion bonding method for γ'reinforced Ni-based heat resistant alloy members - Google Patents
Liquid phase diffusion bonding method for γ'reinforced Ni-based heat resistant alloy membersInfo
- Publication number
- JPH0698481B2 JPH0698481B2 JP24264686A JP24264686A JPH0698481B2 JP H0698481 B2 JPH0698481 B2 JP H0698481B2 JP 24264686 A JP24264686 A JP 24264686A JP 24264686 A JP24264686 A JP 24264686A JP H0698481 B2 JPH0698481 B2 JP H0698481B2
- Authority
- JP
- Japan
- Prior art keywords
- reinforced
- phase diffusion
- liquid phase
- based heat
- diffusion bonding
- 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.)
- Expired - Lifetime
Links
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- Physical Vapour Deposition (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、クリープ強度の高い接合部を形成すること
ができるγ′強化型Ni基耐熱合金部材の液相拡散接合方
法に関するものである。Description: TECHNICAL FIELD The present invention relates to a liquid phase diffusion bonding method for a γ ′ reinforced Ni-base heat-resistant alloy member capable of forming a joint having high creep strength.
〔従来の技術〕 一般に、高温強度が要求される部材、例えばジエツトエ
ンジン部材には、重量％で（以下％は重量％を示す）、 C:0.02〜0.15％、Cr:6〜25％、 Ti:0.2〜５％、Al:0.2〜６・５％、 を含有し、さらに、 Si:0.01〜0.85％、Mn:0.01〜0.85％、 Co:1〜30％、Mo:1〜10％、 Fe:0.15〜25％、B:0.005〜1.2％、 W:0.1〜10％、Nb:0.1〜５％、 のうちの１種または２種以上、 を含有し、残りがNiと不可避不純物からなる組成、並び
に素地中にγ′、すなわちNi3（Al,Ti）が微細均一に分
散析出した組織を有するγ′強化型Ni基耐熱合金が用い
られ、また、これらのγ′強化型Ni基耐熱合金部材が、
ろう材としてNi-Cr-Ｂ系合金の箔材または粉末を用い、
このろう材を部材の接合面間にはさんだ状態で、真空ま
たは不活性ガス雰囲気中、1075〜1200℃の温度で液相拡
散接合されることはよく知られているところである。[Prior Art] Generally, a member requiring high-temperature strength, for example, a jet engine member, has a weight% (hereinafter,% means weight%), C: 0.02 to 0.15%, Cr: 6 to 25%, Ti: 0.2 to 5%, Al: 0.2 to 6.5%, Si: 0.01 to 0.85%, Mn: 0.01 to 0.85%, Co: 1 to 30%, Mo: 1 to 10%, Fe: 0.15 to 25%, B: 0.005 to 1.2%, W: 0.1 to 10%, Nb: 0.1 to 5%, containing one or more of the following, with the balance consisting of Ni and inevitable impurities Γ'reinforced Ni-based heat-resistant alloys having a composition and a structure in which γ ', that is, Ni 3 (Al, Ti) are finely and uniformly dispersed and precipitated in the matrix are used. Alloy material,
Ni-Cr-B alloy foil material or powder is used as brazing material,
It is well known that liquid phase diffusion bonding is carried out at a temperature of 1075 to 1200 ° C. in a vacuum or an inert gas atmosphere with the brazing material sandwiched between the bonding surfaces of the members.
しかし、上記の従来液相拡散接合方法によつてろう付け
されたγ′強化型Ni基耐熱合金部材においては、その接
合部のクリープ強度が十分満足するものではなく、した
がつてこれら部材の接合部におけるクリープ強度の改善
が強く望まれている。However, in the γ'reinforced Ni-based heat-resistant alloy members brazed by the above-mentioned conventional liquid phase diffusion bonding method, the creep strength of the bonded portion is not sufficiently satisfied, and therefore the bonding of these members It is strongly desired to improve the creep strength in the part.
そこで、本発明者等は、上述のような観点から、液相拡
散接合によりろう付けされたγ′強化型Ni基耐熱合金部
材の接合部におけるクリープ強度を向上させるべく研究
を行なつた結果、従来液相拡散接合方法においては、ろ
う付けに先だつて、接合せんとするγ′強化型Ni基耐熱
合金部材の接合面をイオンボンバードによりクリーニン
グするが、クリーニング装置とろう付け装置とは別々で
あるため、クリーニング装置からろう付け装置に移す間
に、前記部材接合面における易酸化性の合金成分として
のTiおよびAlが大気中の酸素と反応して酸化物を形成
し、この状態で液相拡散接合を行なうと、接合部には酸
化物が存在するようになり、この酸化物が原因で十分な
クリープ強度が得られないことが判明し、しかして、
γ′強化型Ni基耐熱合金部材の接合面を、ろう付けに先
だつて、イオンプレーテイング装置またはスパツタリン
グ装置において、まずイオンボンバードによりクリーニ
ングし、引続いてこのクリーニング接合面に、Pd、Pt、
Cr、またはCr-Ni合金の金属皮膜を蒸着形成しておく
と、前記の反応性の強い接合面は前記難酸化性の金属皮
膜によつて保護されることから、これが酸化することは
なく、またろう付け時に、接合面に蒸着された金属皮膜
に僅かな酸化があつても、これらの酸化物は、ろう付け
時の真空または不活性ガスの加熱雰囲気によつて還元さ
れ、あるいは蒸発除去されることから、接合部には酸化
物がほとんど存在しないようになるので、クリープ強度
の高い接合部が形成されるようになるという知見を得た
のである。Therefore, the present inventors, from the above viewpoints, as a result of conducting research to improve the creep strength in the joint portion of the γ'reinforced Ni-based heat-resistant alloy member brazed by liquid phase diffusion bonding, In the conventional liquid phase diffusion bonding method, the bonding surface of the γ'reinforced Ni-based heat-resistant alloy member to be bonded is cleaned by ion bombarding prior to brazing, but the cleaning device and the brazing device are separate. Therefore, during the transfer from the cleaning device to the brazing device, Ti and Al as easily oxidizable alloy components on the joint surface of the members react with oxygen in the atmosphere to form an oxide, and in this state liquid phase diffusion When joining was carried out, it became clear that oxide was present at the joint, and it was found that sufficient creep strength could not be obtained due to this oxide.
Prior to brazing, the joint surface of the γ'reinforced Ni-based heat-resistant alloy member is first cleaned by ion bombarding in an ion plating device or a sputtering device, and then Pd, Pt, Pt,
Cr, or by forming a metal film of Cr-Ni alloy by vapor deposition, since the strongly reactive bonding surface is protected by the non-oxidizing metal film, it does not oxidize, Also, during brazing, even if there is a slight oxidation of the metal film deposited on the joint surface, these oxides are reduced or evaporated by the vacuum or heated atmosphere of inert gas during brazing. From this, it was found that almost no oxide was present in the joint, and thus a joint having high creep strength was formed.
この発明は、上記知見にもとづいてなされものであつ
て、γ′強化型Ni基耐熱合金部材をNi-Cr-Ｂ系合金ろう
材を用いて液相拡散接合するに際して、ろう付けに先だ
つて、イオンプレーテイング装置またはスパツタリング
装置において、前記部材の接合面をイオンボンバードに
よりクリーニグし、引続いてこのクリーニング接合面
に、Pd、Pt、Cr、またはCr-Ni合金の金属皮膜を蒸着形
成することによつて、前記部材接合面の酸化を防止し、
これによつて高いクリープ強度を有する接合部を形成す
るようにしたγ′強化型Ni基耐熱合金部材の液相拡散接
合方法に特徴を有するものである。The present invention has been made based on the above findings, and when liquid-phase diffusion bonding of a γ'reinforced Ni-based heat-resistant alloy member using a Ni-Cr-B alloy brazing material, prior to brazing, In an ion plating device or a sputtering device, the bonding surface of the member is cleaned by ion bombardment, and subsequently, a metal film of Pd, Pt, Cr, or Cr-Ni alloy is vapor-deposited on the cleaning bonding surface. Therefore, to prevent the oxidation of the member joint surface,
This is characterized by a liquid phase diffusion bonding method for a γ'reinforced Ni-based heat-resistant alloy member, which is designed to form a joint having high creep strength.
つぎに、この発明の方法を実施例により具体的に説明す
る。Next, the method of the present invention will be specifically described by way of Examples.
まず、γ′強化型Ni基耐熱合金部材として、いずれも直
径:15mmφ×長さ:60mmの寸法をもち、かつそれぞれ第１
表に示される組成をもつた試験片を用意し、この試験片
を、その接合面を機械加工により仕上げて鋳造時の変質
層を取り除いた状態で、イオンプレーテイング装置に装
入し、装置内を、10-6torrの高真空に排気した後、高純
度のArガスを導入しして雰囲気圧力を10-3torrとし、こ
の状態で、試験片を陰極とし、陽極との間に、周波数:1
3.56MHz、電流密度:0.5A/cm2、直流電圧:1KVの条件で高
周波電圧を印加して放電し、発生したArイオンのボンバ
ードによつて試験片の接合面を20分間クリーニングし、
ついで、通常の条件で、このクリーニングした接合面
に、同じく第１表に示される金属および層厚の金属皮膜
を蒸着形成し、ついで、このようにクリーニングし、か
つ金属皮膜を形成した試験片を、イオンプレーテイング
装置から取り出し、通常のろう付け装置に、同じく第１
表に示される組成を有し、かつ通常の単ロールによる超
急冷法により製造された厚さ:25μｍのNi-Cr-Ｂ系合金
ろう材を接合面間にはさんで積み重ねた状態で装入し、
0.2Kg/mm2の荷重をかけながら、10-5torrの真空中、115
0℃に３時間保持し、引続いて1100 ℃に24時間保持の条件で液相拡散接合を行なうことによ
つて本発明法１〜６をそれぞれ実施した。First, as a γ'reinforced Ni-based heat-resistant alloy member, all had dimensions of diameter: 15 mmφ x length: 60 mm, and each had the first
Prepare a test piece with the composition shown in the table, and insert this test piece into the ion plating equipment with the joining surface finished by machining to remove the deteriorated layer at the time of casting, , Was evacuated to a high vacuum of 10 -6 torr, high-purity Ar gas was introduced to set the atmospheric pressure to 10 -3 torr, and in this state, the test piece was used as the cathode and the frequency between the anode and : 1
3.56MHz, current density: 0.5A / cm 2 , DC voltage: 1KV under the condition of applying a high frequency voltage to discharge, the bonding surface of the test piece was cleaned for 20 minutes by the generated Ar ion bombardment,
Then, under normal conditions, a metal coating having the same metal and layer thickness as shown in Table 1 was vapor-deposited and formed on the cleaned joint surface, and then the test piece thus cleaned and having the metal coating formed thereon was formed. , Removed from the ion-plating equipment and replaced with the usual brazing equipment
It has the composition shown in the table and is manufactured by a normal single roll ultra-quenching method. A Ni-Cr-B alloy brazing filler metal with a thickness of 25 μm is inserted between the joint surfaces and stacked. Then
While applying a load of 0.2 kg / mm 2 , in a vacuum of 10 -5 torr, 115
Hold at 0 ° C for 3 hours, then continue to 1100 Each of the methods 1 to 6 of the present invention was carried out by performing liquid phase diffusion bonding under the condition of holding at 24 ° C for 24 hours.
また、比較の目的で、クリーニング接合面への金属皮膜
の蒸着形成を行なわない以外は、上記本発明法１〜６に
おけると同一の条件で従来法１〜３をそれぞれ行なつ
た。For the purpose of comparison, Conventional Methods 1 to 3 were carried out under the same conditions as in the above Invention Methods 1 to 6 except that the metal film was not formed on the cleaning joint surface by vapor deposition.
ついで、この結果得られた各種のろう付け部材につい
て、これより平行部が6mmφの接合試験片を切り出し、7
60℃および982℃において、それぞれ100時間のクリープ
試験を行ない、接合部のクリープラプチヤー強度（100
時間で寿命となる時の負荷）を測定した。この結果を第
１表に示した。Then, for each of the brazing members obtained as a result of this, a joint test piece with a parallel portion of 6 mmφ was cut out from this, and
Creep tests of 100 hours were carried out at 60 ℃ and 982 ℃, respectively, and the creep rupture strength (100
The load at the time of reaching the end of life) was measured. The results are shown in Table 1.
第１表に示される結果から、本発明法１〜６において
は、いずれの場合も接合部に酸化物が存在しないので、
著しく高いクリープ強度をもつた接合部を形成すること
ができるのに対して、従来法１〜３では、部材のクリー
ニング装置からろう付け装置への移動の間に接合面に酸
化が起り、接合部における酸化物の存在を無とすること
は不可能なことから、相対的に低いクリープ強度の接合
部しか得られないことが明らかである。From the results shown in Table 1, in each of the methods 1 to 6 of the present invention, since no oxide is present in the joint,
While it is possible to form a joint having a remarkably high creep strength, in the conventional methods 1 to 3, oxidation occurs on the joint surface during the movement of the member from the cleaning device to the brazing device, and the joint part is Since it is not possible to eliminate the presence of oxides in, it is clear that only relatively low creep strength joints can be obtained.
上述のように、この発明の方法によれば、γ′強化型Ni
基耐熱合金部材の接合面をイオンボンバードによりクリ
ーニングした後、直ちにこれに難酸化性の金属皮膜を蒸
着形成しておくことによつて、ろう付け時における液相
拡散接合を酸化物の存在しない状態で行なうことができ
るようになり、これによつて接合部のクリープ強度が著
しく向上するようになるなど工業上有利な効果が得られ
るのである。As described above, according to the method of the present invention, γ′-reinforced Ni
After the bonding surface of the base heat-resistant alloy member was cleaned with ion bombardment, a non-oxidizing metal film was immediately formed by vapor deposition on the surface, so that liquid phase diffusion bonding during brazing was performed without the presence of oxides. In this way, the industrially advantageous effects such as the creep strength of the joint portion being remarkably improved can be obtained.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭58−16794（ＪＰ，Ａ) 特公 昭58−32031（ＪＰ，Ｂ２) 特公 昭58−32030（ＪＰ，Ｂ２) 特公 昭55−7111（ＪＰ，Ｂ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP 58-16794 (JP, A) JP 58-32031 (JP, B2) JP 58-32030 (JP, B2) JP 55- 7111 (JP, B2)
Claims (1)
合金ろう材を用いて液相拡散接合するに際して、ろう付
けに先だつて、イオンプレーテイング装置またはスパツ
タリング装置において、前記部材の接合面をイオンボン
バードによりクリーニングし、かつこのクリーニング接
合面に、Pd、Pt、Cr、またはCr-Ni合金の金属皮膜を蒸
着形成することを特徴とするγ′強化型Ni基耐熱合金部
材の液相拡散接合方法。1. A liquid-phase diffusion bonding of a γ'reinforced Ni-based heat-resistant alloy member using a Ni-Cr-B alloy brazing material, prior to brazing, in an ion plating device or a sputtering device. A γ'reinforced Ni-based heat-resistant alloy member characterized in that the bonding surface of the member is cleaned by ion bombardment, and a metal coating of Pd, Pt, Cr, or Cr-Ni alloy is vapor-deposited on the cleaning bonding surface. Liquid phase diffusion bonding method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24264686A JPH0698481B2 (en) | 1986-10-13 | 1986-10-13 | Liquid phase diffusion bonding method for γ'reinforced Ni-based heat resistant alloy members |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24264686A JPH0698481B2 (en) | 1986-10-13 | 1986-10-13 | Liquid phase diffusion bonding method for γ'reinforced Ni-based heat resistant alloy members |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6397358A JPS6397358A (en) | 1988-04-28 |
| JPH0698481B2 true JPH0698481B2 (en) | 1994-12-07 |
Family
ID=17092142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24264686A Expired - Lifetime JPH0698481B2 (en) | 1986-10-13 | 1986-10-13 | Liquid phase diffusion bonding method for γ'reinforced Ni-based heat resistant alloy members |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0698481B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5832031B2 (en) | 2009-05-25 | 2015-12-16 | オブスチェストヴォ ス オグラニチェンノイ オトヴェツトヴェンノスチュ “ツイン テクノロジー カンパニー”Ｏｂｓｈｅｓｔｖｏ Ｓ Ｏｇｒａｎｉｃｈｅｎｎｏｙ Ｏｔｖｅｔｓｔｖｅｎｎｏｓｔｙｕ ‘Ｔｗｉｎ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏｍｐａｎｙ’ | Method and apparatus for drying ingredients |
| JP5832030B2 (en) | 2012-10-19 | 2015-12-16 | 海幹 森田 | Earphone container and earphone including earphone container |
-
1986
- 1986-10-13 JP JP24264686A patent/JPH0698481B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5832031B2 (en) | 2009-05-25 | 2015-12-16 | オブスチェストヴォ ス オグラニチェンノイ オトヴェツトヴェンノスチュ “ツイン テクノロジー カンパニー”Ｏｂｓｈｅｓｔｖｏ Ｓ Ｏｇｒａｎｉｃｈｅｎｎｏｙ Ｏｔｖｅｔｓｔｖｅｎｎｏｓｔｙｕ ‘Ｔｗｉｎ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏｍｐａｎｙ’ | Method and apparatus for drying ingredients |
| JP5832030B2 (en) | 2012-10-19 | 2015-12-16 | 海幹 森田 | Earphone container and earphone including earphone container |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6397358A (en) | 1988-04-28 |
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