JPS5985834A - Beam of jet pump - Google Patents
Beam of jet pumpInfo
- Publication number
- JPS5985834A JPS5985834A JP57194649A JP19464982A JPS5985834A JP S5985834 A JPS5985834 A JP S5985834A JP 57194649 A JP57194649 A JP 57194649A JP 19464982 A JP19464982 A JP 19464982A JP S5985834 A JPS5985834 A JP S5985834A
- Authority
- JP
- Japan
- Prior art keywords
- jet pump
- corrosion cracking
- stress corrosion
- less
- alloy
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は高温高圧の純水中で使用するジェットポンプビ
ームに関する１、
〔発明の技術的背景とその問題点〕
原子炉炉内のジェットポンプビームとして高弾性率と高
温強度を有する析出硬化型Ｎ１基合金であるインコネル
Ｘ −７５０が従来よシ使用されている。Ｘ −７５０
は所望の副食性を得るに必要な量のＣｒ、析出硬化に必
要なＮｂ、Ａ−ｅ、Ｔｊを貧む析出硬化型Ｎｉ基合金で
ある。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a jet pump beam used in high-temperature and high-pressure pure water. Conventionally, Inconel X-750
is a precipitation hardening type Ni-based alloy that lacks the amount of Cr necessary to obtain the desired side-eating properties, and the amount of Nb, Ae, and Tj necessary for precipitation hardening.
ところでジェットポンプビーム゛には常に高応力が作用
するとともに、高温、高圧の純水にさらされてお、す、
同時に他の部材と近接し隙間を形成している。そのため
ジェットポンプビームは、高温高圧の純水によって腐食
されるとともに、隙間並びに高応力によって応力腐食割
れが生じる可能性がある。By the way, the jet pump beam is constantly subjected to high stress and is exposed to high temperature and high pressure pure water.
At the same time, it is close to other members and forms a gap. Therefore, the jet pump beam is corroded by high-temperature, high-pressure pure water, and stress corrosion cracking may occur due to the gaps and high stress.
この応力腐食割れは引張応力の存在、使用積項条件、お
よび材料自体の特性の３因子が揃ったときに発生するも
のであシ、この応力腐食割れを防止するには斜材自体の
特性を改善し、応力腐食割れ感受性を低くすることが最
善の方法である。This stress corrosion cracking occurs when three factors are met: the presence of tensile stress, the product term conditions used, and the properties of the material itself.To prevent this stress corrosion cracking, the properties of the diagonal members themselves must be adjusted. The best way to improve this is to reduce stress corrosion cracking susceptibility.
他方ジェットポンプビームな成形する場合には型鍛造に
よっているが、所望の形状に加工する場合加工が困難で
微小き裂が発生する可能性を有する等の欠点があった。On the other hand, when forming a jet pump beam, die forging is used, but it has drawbacks such as difficulty in processing it into a desired shape and the possibility of generating microcracks.
本発明の目的は特に原子カプラントの高温高圧純水環境
下においても耐応力腐食割れ性に優れ、同時に微小き裂
のないジェットポンプビームを提供するにある、
〔発明の概要〕
本発明はＸ量チでｃｏ、ｏｓ係以下、ＳｉＯ，５チ以下
、Ａ（ｎ １．０％以下、Ｃｒ １４，０〜１７．０
’Ｉｒ、Ｆｅ ５．０〜１．０．０ ％、Ｔｉ２．２５
〜２．７５チ、ｌ司０，４０〜１．００チ、Ｎｂ Ｏ，
７〜１．２０チ、Ｍｏ２．０〜８．０チ、Ｍｇ０．００
８〜０．０６東残部ＮｉよりなるＩＡツ応力腐食割れ性
に優れた微小き裂のない原子カプラントに適したジェッ
トポンプビームである。The purpose of the present invention is to provide a jet pump beam that has excellent stress corrosion cracking resistance even in the high-temperature, high-pressure pure water environment of an atomic couplant, and is free from microcracks. Chi, co, os or less, SiO, 5 chi or less, A (n 1.0% or less, Cr 14.0 to 17.0
'Ir, Fe 5.0-1.0.0%, Ti2.25
~2.75chi, 0.40~1.00chi, Nb O,
7-1.20chi, Mo2.0-8.0chi, Mg0.00
This jet pump beam is made of 8-0.06 Ni and is suitable for an atomic couplant with excellent stress corrosion cracking resistance and no microcracks.
つまシネ発明は、応力腐食割れ感受性及び塑性加工性に
影響を及ばすＮｌ基合金の成分元素について種々検討し
た結果、特にＭｏを添加することによって応力腐食割れ
感受性が著しく低下すること及びＭｇを添加することに
よシ、塑性加工性が向上することを見い出し、これによ
シ、応力腐食割れ感受性が七しく小さく、また微小き裂
のない原子カプラントに遍したジェットポンプビームな
提供するものである。As a result of various studies on the component elements of Nl-based alloys that affect stress corrosion cracking susceptibility and plastic workability, the Tsumashine invention found that the stress corrosion cracking susceptibility is significantly reduced by adding Mo and that the addition of Mg. We have found that plastic workability is improved by this method, and this provides a jet pump beam that has significantly lower stress corrosion cracking susceptibility and is free from microcracks. .
次に本発明に係るジェットポンプビームの各組成の限定
理由を説明する Ｃは強度を高めるために必要な元素で
あシ多量に含有させると耐食性が劣化するとともに靭性
を低め熱間塑性加工も害すのでｏ、ｏ ８ ％以下とす
る。Ｓｉは脱酸剤として加えるが、その含有量が０．５
％をこえると加工性が劣化するため０．５チ以下の含有
とする。Ｍｎは８Ｉと同様に脱酸・脱硫剤として添加す
るものでｓｂ、１．０％以上になると溶製が困難となる
ためその含有量を１．０％以下とする。Ｃｒは耐食性を
得るのに重要な元素であり、特に原子炉内で使用される
部材として高温高圧純水に対してその耐食性を確保する
ためには１４チ以上の含有が必要であるが、１７チをこ
えると加工性が劣化するため１４〜１７％の含有とする
。 Ｆｅは熱間加工性を同上するために必要な元素で、
その量が５チ未満では十分な加工性が得られず、また多
量含有すると耐食性が低下すること、またＬａ％’ｅｌ
！相などの有害相を生じることから１０％までとした。Next, the reason for limiting each composition of the jet pump beam according to the present invention will be explained. C is an element necessary to increase strength, and if it is included in a large amount, corrosion resistance will deteriorate, toughness will decrease, and hot plastic working will be impaired. Therefore, o, o should be 8% or less. Si is added as a deoxidizing agent, but its content is 0.5
If the content exceeds 0.5%, the workability deteriorates, so the content should be 0.5% or less. Like 8I, Mn is added as a deoxidizing/desulfurizing agent, and if it exceeds 1.0% of sb, melting becomes difficult, so its content is set to 1.0% or less. Cr is an important element for obtaining corrosion resistance, and in order to ensure corrosion resistance against high-temperature, high-pressure pure water as a member used in a nuclear reactor, it is necessary to contain 14 or more Cr. If the content exceeds 14%, the processability deteriorates, so the content should be 14 to 17%. Fe is an element necessary to improve hot workability.
If the amount is less than 5 inches, sufficient workability cannot be obtained, and if it is contained in a large amount, corrosion resistance will be reduced.
! The amount was set at 10% because harmful phases such as phase were generated.
ＴｉおよびＡ形は微細なＮ１との釜属間化合物を形成し
高温強度を高める元素として最も好ましいが、それぞれ
、Ｔｉ ： ２．２５チ未満およびＡｐ ： ０．４０
チ未満では前記作用に所望の向上効果が得られず、一方
それぞれＴ ｒ ： ２．７５チおよびＡ−Ｉ３：１．
００チをこえて含有させてもより一段の改善効果が見ら
れないばかシか、好ましくない粗大な金属間化合物を生
成することからそれぞれＴｉ ： ２．２５〜２．７５
チ、 ｉ ０．４０〜１．０１の含有とする。Ｎｂは析
出硬化によって高温強度を高めるのに必要な元素であり
０．７チ未満では析出硬化が不十分であり、また１、２
０％をこえて含有してもその効果が飽和するので、０．
７〜１．２０％の含有とする。Ｍｏは特に耐応力腐食割
れ性を向上させるために添加するものであるが、２．０
チ以上とするのはそれ未満では耐応力腐食割れ性の十分
な向上は見られないためであシ、また１゜チ以下とする
のはそれをこえて添加しても効果が飽和してしまうばか
）か、加゛工性及び熱間鍛造性を劣化させるためである
。Ｍｇは脱酸、脱硫剤として有効であると同時に本発明
において、塑性加工性を向上させるために添加するもの
であり、０．００８−未満ではその効果は小さく、また
多線の添加は逆に加工性を低下させるため上限を０．０
６％とする。Ti and type A are most preferred as elements that form intermetallic compounds with fine N1 and increase high-temperature strength, but Ti: less than 2.25 Ti and Ap: 0.40, respectively.
When T r is less than 2.75 h and A-I3:1.
Ti: 2.25 to 2.75, respectively, because even if more than 0.00 Ti is contained, no further improvement effect will be seen, or because undesirable coarse intermetallic compounds will be produced.
h, i shall be contained in the range of 0.40 to 1.01. Nb is an element necessary to increase high-temperature strength through precipitation hardening, and if it is less than 0.7 mm, precipitation hardening will be insufficient, and if it is less than 0.7 mm, precipitation hardening will be insufficient.
Even if the content exceeds 0%, the effect will be saturated, so 0.
The content should be 7 to 1.20%. Mo is added especially to improve stress corrosion cracking resistance.
The reason why it is set at 1° or more is because the stress corrosion cracking resistance will not be sufficiently improved if it is less than that, and the effect is saturated even if it is added at 1° or less. Either this is because it deteriorates workability and hot forgeability. Mg is effective as a deoxidizing and desulfurizing agent, and at the same time is added to improve plastic workability in the present invention.If it is less than 0.008, the effect is small, and on the contrary, the addition of polycarbonate The upper limit is set to 0.0 to reduce workability.
6%.
通常の真空高周波誘導炉を使用し、通常の溶解条件にて
それぞれ第１表に示される成分組成をもつ溶湯を調製し
、鋳造してインゴットを得た。引続いてこのインゴット
を温［１１５０Ｃに２４時間保持し、ソーキングを行な
い試料とした、臥千范０
ついでこれらの試料よＦ） １１’径７１１１１１．長
さ１２ｍｍの丸棒試験片を切出し、この試験片を９００
Ｃから２５Ｃづつ間隔をおいて１８５０Ｃまで加熱し、
各加熱温度に加熱された試験片に対して一定の歪速度（
１０／ｓ ｅ ｃ ）で長さ１２Ｍから長さ６關にすえ
込む鍛造試験を行ない前記試験片に鍛造割れが生じる最
低加熱温度を測定した。Using an ordinary vacuum high-frequency induction furnace and under ordinary melting conditions, molten metals having the respective compositions shown in Table 1 were prepared and cast to obtain ingots. Subsequently, this ingot was kept at a temperature of 1150C for 24 hours and soaked to prepare samples. A round bar test piece with a length of 12 mm was cut out, and this test piece was
Heat to 1850C at intervals of 25C from C,
A constant strain rate (
A forging test was conducted in which the test piece was swaged from length 12M to length 6 at a speed of 10/sec), and the lowest heating temperature at which forging cracks occurred in the test piece was measured.
さらに別途各試料について温度１１５に’に加熱した状
態で鍛造比４まで熱間鍛造を施して熱延板とした。これ
ら鍛造材に対し均質化処理（８８５ＣＸ２４ｈｒ）十時
効処理（７０４１Ｚ’ Ｘ ２０ｈｒ）を施した後、Ｊ
Ｉ８規格に基づく形状の引張試験用丸棒試験片を作成し
た。これら試験片に対して、溶存酸素濃度９２ｐｐｍ、
塩素イオン濃度ｌｐｐｍ以下で、温度２９０Ｃ１圧力１
００ ｋｆ／Ｃｄの高温高圧純水中で、ひずみ速ＩＪｔ
１．ＯＸ １０−’ ／ ｓｅｃにて低ひずみ速度応
力腐食割れ試験を行なった。Furthermore, each sample was heated to a temperature of 115' and hot forged to a forging ratio of 4 to obtain a hot rolled plate. After homogenization treatment (885CX24hr) and aging treatment (7041Z'X20hr) for these forged materials, J
A round bar test piece for tensile testing was prepared having a shape based on the I8 standard. For these test pieces, the dissolved oxygen concentration was 92 ppm,
Chlorine ion concentration 1ppm or less, temperature 290C1 pressure 1
In high-temperature, high-pressure pure water at 00 kf/Cd, the strain rate IJt
1. A low strain rate stress corrosion cracking test was conducted at OX 10-'/sec.
上記試験結果および各試料の常温における機械的強度を
合わせて第２表に示す。以千金臼第２表よシ明らかなよ
うに本発明に係るジェットポンプビームは鍛造性が良好
で、微小き裂の発生が少ない。また従来のものに比べて
、その機械的強度に遜色はなく、同時に低ひずみ速度応
力腐食割れ試験において、５００時間以上経過しても破
断することがなく、耐応力腐食割れ性の点でも優れてい
ることがわかる。The above test results and the mechanical strength of each sample at room temperature are shown in Table 2. As is clear from Table 2, the jet pump beam according to the present invention has good forgeability and less occurrence of microcracks. In addition, its mechanical strength is comparable to that of conventional products, and at the same time, it did not break even after more than 500 hours in a low strain rate stress corrosion cracking test, and it has excellent stress corrosion cracking resistance. I know that there is.
以上の如く本発明に係るジェットポンプビームは耐応力
腐食割れ性に優れると同時に微小き裂が少なく原子カプ
ラント用として適したものであシ工業上有用な特性を有
する。As described above, the jet pump beam according to the present invention has excellent stress corrosion cracking resistance, has few microcracks, and is suitable for use in atomic couplants, and has industrially useful properties.
Claims (1)
Ｍｎ １．０係以下、 Ｃｒ １４．０〜１７．０％
、 ｒｅ ５．０〜１０．０％、 Ｔｉ２．２５〜２．
７５％、 Ａｇ Ｏ，４０〜１．００ ％、 Ｎｂ Ｏ
，７〜１．２０％。 Ｍｏ ２．０〜８．０ ｆｂ、 Ｍｇ ０．００８〜０
．０６ ％残部Ｎｉからなることを特徴とするジェット
ポンプビーム。[Claims] C0.08% or less at 1t% weight, 8i 0.5% or less,
Mn 1.0 or less, Cr 14.0-17.0%
, re 5.0-10.0%, Ti2.25-2.
75%, AgO, 40-1.00%, NbO
,7-1.20%. Mo 2.0~8.0 fb, Mg 0.008~0
．． A jet pump beam characterized by comprising 06% balance Ni.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57194649A JPS5985834A (en) | 1982-11-08 | 1982-11-08 | Beam of jet pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57194649A JPS5985834A (en) | 1982-11-08 | 1982-11-08 | Beam of jet pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5985834A true JPS5985834A (en) | 1984-05-17 |
| JPH0353376B2 JPH0353376B2 (en) | 1991-08-14 |
Family
ID=16328017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57194649A Granted JPS5985834A (en) | 1982-11-08 | 1982-11-08 | Beam of jet pump |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5985834A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138476A (en) * | 2008-12-15 | 2010-06-24 | Toshiba Corp | Jet pump beam and method for manufacturing the same |
-
1982
- 1982-11-08 JP JP57194649A patent/JPS5985834A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010138476A (en) * | 2008-12-15 | 2010-06-24 | Toshiba Corp | Jet pump beam and method for manufacturing the same |
| WO2010071017A1 (en) | 2008-12-15 | 2010-06-24 | 株式会社東芝 | Jet pump beam and manufacturing method therefor |
| US8879683B2 (en) | 2008-12-15 | 2014-11-04 | Kabushiki Kaisha Toshiba | Jet pump beam and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0353376B2 (en) | 1991-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2599263B2 (en) | Nickeloo iron aluminide alloy capable of high temperature processing | |
| KR102660878B1 (en) | METHOD FOR PRODUCING TWO-PHASE Ni-Cr-Mo ALLOYS | |
| US4711761A (en) | Ductile aluminide alloys for high temperature applications | |
| EP0593824A1 (en) | Nickel aluminide base single crystal alloys and method | |
| JPS61288041A (en) | Ni-base alloy excellent in intergranular stress corrosion cracking resistance and pitting resistance | |
| JPS6350448A (en) | Dispersion reinforced alloy | |
| JPS6057498B2 (en) | molybdenum alloy | |
| EP0398264B1 (en) | Precipitation hardening type nickel base single crystal cast alloy | |
| SE431660B (en) | FORMABLE AUSTENITIC Nickel Alloy | |
| JPS5985834A (en) | Beam of jet pump | |
| JPS62142735A (en) | Corrosion resistant cu alloy | |
| JPH0114991B2 (en) | ||
| JP2970432B2 (en) | High temperature stainless steel and its manufacturing method | |
| JPH03134144A (en) | Nickel-base alloy member and its manufacture | |
| JPS6353234A (en) | Structural member having heat resistance and high strength | |
| JP3225604B2 (en) | Method for producing intermetallic compound precipitation-strengthened Ni-Cr-Mo-based alloy cast member having excellent corrosion resistance | |
| US3287110A (en) | Non-ferrous alloy and method of manufacture thereof | |
| JPS62167839A (en) | Ni base alloy and its manufacture | |
| JPH02250931A (en) | Intermetallic compound ti-al base alloy refined material having excellent fracture toughness | |
| JPH07316699A (en) | Corrosion-resistant nitride-dispersed nickel base alloy having high hardness and strength | |
| US3184305A (en) | Titanium base alloys | |
| JP2807260B2 (en) | Precipitation strengthened Ni-based single crystal alloy with excellent stress corrosion cracking resistance | |
| KR930009978B1 (en) | High-temperature fabricable nickel-iron aluminides | |
| JPH04218649A (en) | Manufacture of ti-al intermetallic compound type alloy | |
| JPS583942A (en) | Ni alloy with superior embrittlement resistance at intermediate temperature |