JP2528704B2 - Hardfacing alloy with excellent high temperature tensile creep properties - Google Patents
Hardfacing alloy with excellent high temperature tensile creep propertiesInfo
- Publication number
- JP2528704B2 JP2528704B2 JP1026291A JP2629189A JP2528704B2 JP 2528704 B2 JP2528704 B2 JP 2528704B2 JP 1026291 A JP1026291 A JP 1026291A JP 2629189 A JP2629189 A JP 2629189A JP 2528704 B2 JP2528704 B2 JP 2528704B2
- Authority
- JP
- Japan
- Prior art keywords
- high temperature
- particles
- tensile creep
- alloy
- carbide particles
- 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
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、高温ファンの羽根部材の構成材料として使
用される高温引張クリープ特性にすぐれた溶接肉盛合金
に関する。TECHNICAL FIELD The present invention relates to a weld overlay metal alloy having excellent high temperature tensile creep characteristics, which is used as a constituent material of a blade member of a high temperature fan.
〔従来の技術〕 高温、特に1000℃以上の温度域で使用される部材の高
温特性改良材として、耐熱合金に炭化クロム粒子を混在
させた分散強化型合金が使用されている。[Prior Art] A dispersion-strengthened alloy in which chromium carbide particles are mixed with a heat-resistant alloy is used as a material for improving the high-temperature characteristics of members used at high temperatures, particularly in the temperature range of 1000 ° C or higher.
上記分散強化型合金は、主として耐摩耗・耐圧縮クリ
ープ材として開発されたものであり、加熱炉の炉床構成
部材や圧延用ロール材等として好適ではあるが、耐引張
クリープ性に乏しいため、高温ファン等のように引張応
力の作用下に使用される部材構成材料としての適性に乏
しく、耐久性改善効果はあまり期待できない。The dispersion-strengthened alloy was mainly developed as a wear-resistant / compression-creep-resistant material, and is suitable as a hearth constituent member of a heating furnace or a roll material for rolling, but has poor tensile creep resistance, It is poor in suitability as a member constituting material used under the action of tensile stress such as a high temperature fan, and durability improvement effect cannot be expected so much.
本発明は上記に鑑み、1000℃以上の高温環境で使用さ
れるファンの構成材料として好適な改良された引張クリ
ープ特性を有する分散強化型溶接肉盛合金を提供するも
のである。In view of the above, the present invention provides a dispersion strengthened weld overlay alloy having improved tensile creep characteristics, which is suitable as a constituent material of a fan used in a high temperature environment of 1000 ° C or higher.
〔課題を解決するための手段および作用〕 本発明の高温ファン用分散強化型溶接肉盛合金は、N
i:25〜35％,Cr:20〜26％,Co:10〜14％,W:4〜６％，残部
実質的にFeであるニッケル基耐熱合金鋼、もしくはCo:3
3〜47％,Cr:22〜32％,Ni:15〜25％，残部実質的にFeで
あるコバルト基耐熱合金鋼からなる金属マトリックス
に、分散相粒子として、炭化クロム粒子25〜55重量％
と、炭化ニオブ粒子２〜20重量％とが混在した複合組織
を有することを特徴としている。[Means and Actions for Solving the Problems] The dispersion-strengthened weld overlay alloy for a high-temperature fan of the present invention is N
i: 25-35%, Cr: 20-26%, Co: 10-14%, W: 4-6%, balance Ni-based heat-resisting alloy steel which is substantially Fe, or Co: 3
3 to 47%, Cr: 22 to 32%, Ni: 15 to 25%, balance 25 to 55% by weight of chromium carbide particles as dispersed phase particles in a metal matrix consisting of cobalt-based heat-resistant alloy steel that is substantially Fe.
And a niobium carbide particle in an amount of 2 to 20% by weight.
本発明の溶接肉盛合金は、炭化クロム（Cr3C2，Cr
7C3，Cr4C等）の粒子に分散による高温耐摩耗性および
耐酸化性と、炭化ニオブ（NbC）の粒子の分散による良
好な高温引張クリープ特性を有する。高温引張クリープ
特性の改善効果は、炭化ニオブ粒子の単独添加に比べ、
炭化クロム粒子の複合配合により増強される。また、本
発明の肉盛合金はこれら粒子の分散硬化作用による高温
強度を備えている。炭化クロム粒子による耐摩耗性・耐
酸化性向上効果を十分なものとするには、少なくとも25
重量％の配合を必要とする、配合量を増すに伴ってその
効果は増大するが、55重量％をこえると、溶接肉盛の施
工中に肉盛層に割れが生じ易くなる。このため炭化クロ
ム粒子の配合量は25〜55重量％とした。他方、炭化ニオ
ブ粒子による高温引張クリープ特性の改善効果は、２重
量％以上の配合により得られ、配合量と共にその効果の
増加をみる。しかし、20重量％をこえると、肉盛施工性
が悪くなり、また粒子の酸化消耗量が多くなる。このた
め炭化ニオブ粒子の配合量は２〜20重量％とした。な
お、炭化クロム粒子および炭化ニオブ粒子の粒度は、例
えば平均粒径約100μｍであってよい。The weld overlay alloy of the present invention is made of chromium carbide (Cr 3 C 2 , Cr
7 C 3 , Cr 4 C, etc.) has high temperature wear resistance and oxidation resistance due to dispersion in particles, and good high temperature tensile creep properties due to dispersion of particles of niobium carbide (NbC). The improvement effect of high temperature tensile creep properties is better than the addition of niobium carbide particles alone.
It is enhanced by the compounding of chromium carbide particles. Further, the hardfacing alloy of the present invention has high temperature strength due to the dispersion hardening action of these particles. At least 25% is required to fully improve the wear resistance and oxidation resistance improvement effect of chromium carbide particles.
The effect increases as the compounding amount increases, which requires the compounding of wt%. However, when it exceeds 55% by weight, cracks are likely to occur in the overlay during the welding overlay process. Therefore, the compounding amount of the chromium carbide particles is set to 25 to 55% by weight. On the other hand, the effect of improving the high temperature tensile creep property by the niobium carbide particles is obtained by the compounding of 2% by weight or more, and the effect increases with the compounding amount. However, if it exceeds 20% by weight, build-up workability becomes poor and the amount of oxidative consumption of particles increases. Therefore, the compounding amount of the niobium carbide particles is set to 2 to 20% by weight. The particle size of the chromium carbide particles and the niobium carbide particles may be, for example, an average particle size of about 100 μm.
本発明の肉盛合金は、ニッケル基耐熱合金鋼またはコ
バルト基耐熱合金鋼をマリックス金属としている。その
ニッケル基合金鋼は、Ni:25〜35％,Cr:20〜26％,Co:10
〜14％,W:4〜６％，残部実質的にFeからなる組成を有
し、コバルト基耐熱合金鋼は、Co:33〜47％,Cr:22〜32
％,Ni:15〜25％，残部実質的にFeからなる組成を有す
る。The overlay alloy of the present invention uses nickel-based heat-resistant alloy steel or cobalt-based heat-resistant alloy steel as the marix metal. The nickel-base alloy steel is Ni: 25-35%, Cr: 20-26%, Co: 10.
~ 14%, W: 4 ~ 6%, the balance is composed essentially of Fe, cobalt-based heat-resistant alloy steel, Co: 33 ~ 47%, Cr: 22 ~ 32
%, Ni: 15 to 25%, the balance being substantially Fe.
ニッケル基合金において、Ni（含有量25〜35％）は、
オーステナイト相の安定化、高温域の強度，耐酸化性等
の改善効果を奏し、Cr（20〜26％）、合金の靱性低下を
伴わずに、高温強度および耐酸化性等を高め、Co（10〜
14％）は、オーステナイト地の強化、耐熱性の向上、ク
リープ抵抗の改善に奏効し、Ｗ（４〜６％）は、合金基
地の強化、クリープ破断強度の改善に寄与する。In nickel-based alloys, Ni (content 25-35%) is
It has effects of stabilizing austenite phase, strength in high temperature range, and resistance to oxidation, improving high temperature strength and oxidation resistance without lowering Cr (20 to 26%) and alloy toughness, and Co ( Ten~
14%) is effective in strengthening the austenite base, improving heat resistance and improving creep resistance, and W (4-6%) contributes to strengthening the alloy matrix and improving creep rupture strength.
コバルト基合金において、Co（33〜47％）は、オース
テナイト地の強化、耐熱性の向上、クリープ抵抗の改善
に寄与し、Cr（22〜32％）は、合金の脆化をきたすこと
なく、高温強度および耐酸化性を高め、Ni（15〜25％）
は、オーステナイト相の安定化、高温強度、耐酸化性の
向上に奏効する。In cobalt-based alloys, Co (33-47%) contributes to strengthening austenite, improving heat resistance, and improving creep resistance, and Cr (22-32%) does not cause embrittlement of the alloy. Improves high temperature strength and oxidation resistance, Ni (15-25%)
Is effective in stabilizing the austenite phase, improving high-temperature strength, and improving oxidation resistance.
本発明の肉盛合金は、マトリックスとなるニッケル基
またはコバルト基耐熱合金鋼粉末と、炭化クロム粉末お
よび炭化ニオブ粉末とからなる粉末混合物、または該粉
末混合物を金属フープに充填しスウェージング加工を加
えて成形したコアードチューブ、あるいは粉末混合物に
圧粉成形と焼成処理を加えて形成した焼結棒等を溶接肉
盛材料とし、その溶接肉盛材料の形態に応じた溶接法を
（例えばプラズマ粉体溶接、TIG溶接、MIG溶接等）によ
り形成される肉盛層として、ファンの羽根等の部材表面
を被覆し、耐引張クリープ性を高める。The hardfacing alloy of the present invention comprises a nickel-based or cobalt-based heat-resistant alloy steel powder serving as a matrix, a powder mixture consisting of a chromium carbide powder and a niobium carbide powder, or a metal hoop filled with the powder mixture and subjected to swaging. The cored tube formed by molding, or a sintered rod formed by applying powder compaction and firing to a powder mixture is used as the weld overlay material, and a welding method suitable for the form of the weld overlay material (for example, plasma powder) is used. As a built-up layer formed by body welding, TIG welding, MIG welding, etc.), it covers the surface of members such as fan blades to enhance tensile creep resistance.
耐熱合金鋼（ニッケル基耐熱合鋼，コバルト基合金
鋼）粉末と、炭化クロム粉末、炭化ニオブ粉末、および
その他の炭化物系セラミックス粉末（平均粒径：約100
μｍ）を用い、その混合粉末を溶接肉盛材とし、プラズ
マ粉体溶接法により肉盛層を形成して供試材を得た。肉
盛層の溶接施工は、溝を形設した金属ブロックの溝内に
行った。Heat-resistant alloy steel (nickel-based heat-resistant composite steel, cobalt-based alloy steel) powder, chromium carbide powder, niobium carbide powder, and other carbide-based ceramic powder (average particle size: about 100
μm), the mixed powder was used as a weld overlay material, and a overlay layer was formed by a plasma powder welding method to obtain a test material. Welding of the overlay was carried out in the groove of the metal block in which the groove was formed.
各供試材から、金属ブロック部分を機械加工により除
去（但し、両端のつかみ代となる部分を除く）して試験
片を調製し、JISZ2272の規定に準拠した引張クリープ破
断試験（但し、試験温度:1000℃，試験荷重:4.4kgf/m
m2）を行った。また、炭化物セラミツクを含まない耐熱
合金鋼単相材について同様の試験を行った。From each test material, the metal block part was removed by machining (excluding the part that becomes the gripping margin at both ends) to prepare a test piece, and a tensile creep rupture test in accordance with JIS Z2272 (at the test temperature : 1000 ℃, Test load: 4.4kgf / m
m 2 ). Further, the same test was conducted on the heat-resistant alloy steel single phase material containing no carbide ceramics.
第１表に各供試材の肉盛合金組成と試験結果を示す。
No.1〜６は、炭化クロム（Cr3C2）と炭化ニオブ（NbC）
の粒子を複合含有する発明例、No.11〜19は比較例であ
る。比較例No.11,No.12はセラミックス粒子を含有しな
い金属単相の例、No.13〜16は炭化クロム粒子または炭
化ニオブ粒子のいずれか一方のみの単独含有の例、No.1
7〜19は炭化クロム，炭化ニオブ以外の炭化物系粒子の
単独または複合含有の例である。なお、各供試材のニッ
ケル基耐熱合金は、30％Ni−23％Cr−12％Co−５％W,Fe
bal、コバルト基耐熱合金鋼は、40％Co−27％Cr−20％N
i,Febalである。Table 1 shows the composition of the overlay alloy and the test results of each test material.
No. 1 to 6 are chromium carbide (Cr 3 C 2 ) and niobium carbide (NbC)
Inventive Examples No. 11 to 19, which include the above-mentioned particles in combination, are comparative examples. Comparative Examples No. 11, No. 12 is an example of a metal single phase containing no ceramic particles, No. 13 to 16 is an example of containing only one of chromium carbide particles or niobium carbide particles, No. 1
Nos. 7 to 19 are examples of containing carbide particles other than chromium carbide and niobium carbide alone or in combination. The nickel-base heat-resistant alloy of each test material is 30% Ni-23% Cr-12% Co-5% W, Fe.
bal, cobalt-base heat-resistant alloy steel is 40% Co-27% Cr-20% N
i, Febal.
第１表に示したとおり、炭化クロム粒子と炭化ニオブ
粒子を複合含有させた発明例は、金属単相の比較例No.1
1およびNo.12に比し、５−６倍以上のクリープ破断時間
を示し、炭化クロム粒子もしくは炭化にオブ粒子のいず
れか一方を単独含有する比較例No.13〜No.16、および他
種の炭化物系を単独もしくは複合含有したNo.17〜19と
の比較においても、高温引張クリープ性にすぐれてい
る。 As shown in Table 1, the invention example in which the chromium carbide particles and the niobium carbide particles were compositely contained was a metal single-phase comparative example No. 1.
Comparative Examples No. 13 to No. 16, which show a creep rupture time of 5 to 6 times or more as compared with Nos. 1 and 12 and contain only one of chromium carbide particles or carbon particles, and other kinds. The high temperature tensile creep property is also excellent in comparison with Nos. 17 to 19 containing the above-mentioned carbide system alone or in combination.
本発明の溶接肉盛合金は、高温域で耐摩耗性や耐酸化
性等と共に、耐引張クリープ性にすぐれているので、高
温ファンの羽根等のように高温環境中、引張応力の作用
下に使用される部材に肉盛層として適用することによ
り、高温ファンの耐久性の向上やメンテナンスの軽減等
の諸効果を得ることができる。Since the weld overlay alloy of the present invention is excellent in tensile creep resistance along with wear resistance and oxidation resistance in a high temperature range, it is subjected to a tensile stress in a high temperature environment such as a blade of a high temperature fan. By applying it as a built-up layer to a member to be used, various effects such as improvement of durability of the high temperature fan and reduction of maintenance can be obtained.
Claims (1)
4〜６％，残部実質的にFeであるニッケル基耐熱合金
鋼、もしくはCo:33〜47％,Cr:22〜32％,Ni:15〜25％，
残部実質的にFeであるコバルト基耐熱合金鋼からなる金
属マトリックスに、分散相粒子として、炭化クロム粒子
25〜55重量％と、炭化ニオブ粒子２〜20重量％とが混在
した複合組織を有することを特徴とする高温引張クリー
プ特性にすぐれた高温ファン用溶接肉盛合金。1. Ni: 25 to 35%, Cr: 20 to 26%, Co: 10 to 14%, W:
4-6%, nickel-base heat-resistant alloy steel with the balance being essentially Fe, or Co: 33-47%, Cr: 22-32%, Ni: 15-25%,
The balance is a metallic matrix consisting of a cobalt-based heat-resistant alloy steel that is substantially Fe, with chromium carbide particles as dispersed phase particles.
A weld overlay metal alloy for a high temperature fan, which is excellent in high temperature tensile creep characteristics and has a composite structure in which 25 to 55% by weight and 2 to 20% by weight of niobium carbide particles are mixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1026291A JP2528704B2 (en) | 1989-02-03 | 1989-02-03 | Hardfacing alloy with excellent high temperature tensile creep properties |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1026291A JP2528704B2 (en) | 1989-02-03 | 1989-02-03 | Hardfacing alloy with excellent high temperature tensile creep properties |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02205294A JPH02205294A (en) | 1990-08-15 |
| JP2528704B2 true JP2528704B2 (en) | 1996-08-28 |
Family
ID=12189204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1026291A Expired - Lifetime JP2528704B2 (en) | 1989-02-03 | 1989-02-03 | Hardfacing alloy with excellent high temperature tensile creep properties |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2528704B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04100247U (en) * | 1991-02-12 | 1992-08-31 | ||
| JP4551201B2 (en) * | 2004-12-03 | 2010-09-22 | 三菱重工業株式会社 | Powder plasma welding material and high temperature wear resistant member |
| JP6049978B1 (en) * | 2016-05-17 | 2016-12-21 | 冨士ダイス株式会社 | Oxidation-resistant low-binder hard alloy with a large thermal expansion coefficient or lens mold made of this material |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5441976A (en) * | 1977-09-08 | 1979-04-03 | Kubota Ltd | Method of injecting resinous material into enlarged part |
| JPS6029982B2 (en) * | 1978-07-27 | 1985-07-13 | 株式会社日立製作所 | Pseudo failure generating device |
| JPS6018742A (en) * | 1983-07-11 | 1985-01-30 | Toyota Motor Corp | Nv measurement of paint applied to object to be painted |
-
1989
- 1989-02-03 JP JP1026291A patent/JP2528704B2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 日本溶接協会誌「溶接技術」（第３４巻，第８号），産報出版，Ｐ．４５〜５０ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02205294A (en) | 1990-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2008522039A (en) | Weldable cobalt alloy with crack resistance | |
| US4216015A (en) | Wear-resistant iron-nickel-cobalt alloys | |
| JPWO2012063512A1 (en) | Wear-resistant cobalt base alloy and engine valve | |
| WO2012063511A1 (en) | High-toughness cobalt-based alloy and engine valve coated with same | |
| JP3343576B2 (en) | Overlay welding material and overlay cladding material | |
| JP4463763B2 (en) | Abrasion and corrosion resistant cobalt alloys | |
| JPH0651239B2 (en) | Ni-based alloy powder for powder overlay | |
| WO1999039015A1 (en) | Nickel based alloys for internal combustion engine valve seat inserts, and the like | |
| EP0039450B1 (en) | Hard facing nickel-base alloy | |
| JP2718132B2 (en) | Skid rail | |
| US4191562A (en) | Wear-resistant nickel-base alloy | |
| JP2528704B2 (en) | Hardfacing alloy with excellent high temperature tensile creep properties | |
| JPS58176095A (en) | Co-base alloy for build-up welding for hard facing which provides excellent resistance to weld cracking | |
| US4750954A (en) | High temperature nickel base alloy with improved stability | |
| US2783144A (en) | Hard facing alloy | |
| CN107363431B (en) | A kind of self-shield open arc built-up welding austenitic matrix flux-cored wire and its application method | |
| JP3960832B2 (en) | High corrosion resistant heat resistant cast steel | |
| JP4170273B2 (en) | Die casting mold repair powder and die casting mold repair method using the same | |
| EP0070689A1 (en) | Welding process for applying a hardfacing to a nodular iron base metal | |
| JP2811866B2 (en) | Hardfacing method for aluminum alloy substrate | |
| JPH06190588A (en) | Ni-base alloy for filling | |
| JP3406663B2 (en) | Welding material for spheroidal graphite cast iron | |
| JPS643944B2 (en) | ||
| JPH10146692A (en) | Inert-gas shielded arc welding material for nickel base alloy | |
| JPH0418956B2 (en) |