JPS6342356A - Fe-cr-high al alloy excellent in oxidation resistance and its production - Google Patents
Fe-cr-high al alloy excellent in oxidation resistance and its productionInfo
- Publication number
- JPS6342356A JPS6342356A JP18338186A JP18338186A JPS6342356A JP S6342356 A JPS6342356 A JP S6342356A JP 18338186 A JP18338186 A JP 18338186A JP 18338186 A JP18338186 A JP 18338186A JP S6342356 A JPS6342356 A JP S6342356A
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- alloy
- oxidation resistance
- foil
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- 230000003647 oxidation Effects 0.000 title claims abstract description 28
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 28
- 229910000838 Al alloy Inorganic materials 0.000 title claims description 10
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 18
- 239000000956 alloy Substances 0.000 claims abstract description 18
- 229910052779 Neodymium Inorganic materials 0.000 claims abstract description 8
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 8
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 7
- 229910052777 Praseodymium Inorganic materials 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 4
- 229910017060 Fe Cr Inorganic materials 0.000 claims description 2
- 229910002544 Fe-Cr Inorganic materials 0.000 claims description 2
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 239000011888 foil Substances 0.000 abstract description 15
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 10
- 229910002060 Fe-Cr-Al alloy Inorganic materials 0.000 abstract description 5
- 239000012298 atmosphere Substances 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 230000008023 solidification Effects 0.000 abstract 1
- 238000007711 solidification Methods 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 238000005097 cold rolling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000713 I alloy Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000007712 rapid solidification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、耐酸化性と酸化スケールの耐！Ａ殖性に優れ
たＦｅ−Ｃｒ−高Ａｌ系合金およびその合金薄帯の製造
方法に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides oxidation resistance and oxide scale resistance! The present invention relates to a Fe-Cr-high Al alloy with excellent A-fertility and a method for producing a ribbon of the alloy.
本合金およびその合金薄帯は高温酸化性雰囲気下で激し
い緑返し酸化を受ける自動東排ガス浄化用触媒コンバー
タに好適なほか、燃焼ガス排気系の機器、装置、暖房機
部品などにも有用である。This alloy and its alloy ribbon are suitable for catalytic converters for automatic east exhaust gas purification, which are subjected to intense green return oxidation in high-temperature oxidizing atmospheres, and are also useful for combustion gas exhaust system equipment, equipment, heater parts, etc. .
従来、自動車排ガス浄化用触媒コンバータには、コーデ
ィエライト（２ＭｇＯ・２Ａ１２０ａ壷５Ｓｉ０２）の
押出焼成ハニカムにγ−アルミナ微粒子を触媒担体とし
てコーティングした後、ｐｔなとの触媒をつけたものが
用いられている。Conventionally, catalytic converters for automobile exhaust gas purification have been made by coating an extruded fired honeycomb of cordierite (2MgO, 2A120a, 5Si02) with γ-alumina fine particles as a catalyst carrier, and then attaching a catalyst such as PT. ing.
特開昭５６−９６７２６号公報に示されているように、
このコーディエライト製ハニカムを耐酸化ステンレス箔
を組みたてて製作した金属製ハニカムにすると、コンバ
ータの小型化、エンジン性ス七の向１−など、種々の利
点がある。前記引用公報では耐酸化ステンレス箔として
イツトリウム（Ｙ）を添加したＦｅ−Ｃｒ−Ａｌ系合金
（Ｃｒ：１５〜２５重州％、Ａｌ：３〜６重量％、Ｙ二
０．３〜１．０重量％）を提案しているが、Ｙが希少全
屈であるため非常に高価であり、また供給量が不足する
恐れがあり、一般の自動車に用いるのは経済性の点で困
難であった。As shown in Japanese Patent Application Laid-open No. 56-96726,
If this cordierite honeycomb is made into a metal honeycomb made by assembling oxidation-resistant stainless steel foil, there are various advantages such as miniaturization of the converter and improved engine performance. In the cited publication, an Fe-Cr-Al alloy containing yttrium (Y) (Cr: 15-25% by weight, Al: 3-6% by weight, Y20.3-1.0%) is used as an oxidation-resistant stainless steel foil. However, since Y is rare and completely bent, it is very expensive, and there is a risk of a shortage in supply, making it economically difficult to use it in general automobiles. .
これに対し、特開昭５８−１７７４３７号公報ではＣｒ
：８〜２５ｉ’ｌ’＜量％、ＡＪＪ：３〜ｇ重量％、全
希土類元素が０．０６重量％までで、０．００２〜０．
０５重量％のＣｅ、Ｌａ、Ｎｄなどを添加した合金（以
下これをＦｅ−Ｃｒ−Ａｌｌ −ＲＥＭ合金と呼ぶ）の
使用を提案している。これは希土類元素の添加によって
スケールの剥離を防いだＦｅ−Ｃｒ−Ａｌ系合金で、電
熱線などにはとくから用いられていたものである。On the other hand, in Japanese Patent Application Laid-open No. 58-177437, Cr
: 8-25i'l'<% by weight, AJJ: 3-g% by weight, total rare earth elements up to 0.06% by weight, 0.002-0.
It is proposed to use an alloy (hereinafter referred to as Fe-Cr-All-REM alloy) to which 0.5% by weight of Ce, La, Nd, etc. are added. This is a Fe-Cr-Al alloy that prevents scale exfoliation by adding rare earth elements, and has long been used in heating wires and the like.
このようなＦｅ−Ｃｒ−ＡＭ−ＲＥＭ系合金は、−・般
用途では十分な酸化スケールの耐剥離性を持っているが
、自動車の排気ガス浄化用触媒コンバータのように発進
、加速、停止のたびに過酷な高温繰返し酸化と激しい振
動を受ける場合、酸化スケールが剥離してしまう。Such Fe-Cr-AM-REM alloys have sufficient oxidation scale peeling resistance for general purposes, but they are used for starting, accelerating, and stopping, such as in catalytic converters for automobile exhaust gas purification. When subjected to repeated oxidation and severe vibration at high temperatures, the oxide scale will peel off.
これに対し本発明者らは、酸化スケールの耐剥離性に優
れたＦｅ−Ｃｒ−Ａｌ系合金として、特願昭６１−０９
１８１５号でｃｒ：１３〜２７重量％、Ａｉ３．５〜８
重量％、Ｌａ：０．０５〜０．２０重量％を含む合金を
提案した。On the other hand, the present inventors proposed a patent application filed in 1983 as a Fe-Cr-Al alloy with excellent peeling resistance of oxide scale.
No. 1815 cr: 13-27% by weight, Ai 3.5-8
We proposed an alloy containing La: 0.05 to 0.20% by weight.
触媒コンバータに使用するステンレス箔をより薄くする
と、ハニカムの断面積減少により排気抵抗が下がり、エ
ンジン性詣が向上する。また、触媒により排気ガスを処
理する場合、触媒の温度がある一定値以上になる必要が
あり、エンジン始動時からある時間は排気ガスは処理さ
れないが箔を薄肉化すると、ハニカムの熱容量が減るの
でこの時間を短縮することができる。By making the stainless steel foil used in the catalytic converter thinner, the cross-sectional area of the honeycomb is reduced, which lowers exhaust resistance and improves engine performance. In addition, when treating exhaust gas with a catalyst, the temperature of the catalyst needs to be above a certain value, and the exhaust gas will not be treated for a certain period of time after the engine starts, but if the foil is made thinner, the heat capacity of the honeycomb will decrease. This time can be shortened.
一方、箔の耐酸化性は箔の厚みに大きく影響され、薄く
すれば急激に耐酸化性が低下する。そのため前述の特開
昭５８−１７７４３７や特願昭６１−０９１８１５号の
成分合金では板厚５０ｇｍ程度の使用が限界で、これ以
上薄くすることができない。On the other hand, the oxidation resistance of the foil is greatly affected by the thickness of the foil, and as the foil becomes thinner, the oxidation resistance decreases rapidly. Therefore, with the component alloys disclosed in Japanese Patent Application Laid-Open No. 58-177437 and Japanese Patent Application No. 61-091815, a plate thickness of about 50 gm is the limit and cannot be made any thinner.
また通常の鋼塊から熱延、冷延によって薄板を製造する
方法では熱延時に鋼塊が割れるため８重着％を超えるＡ
Ｍを含有させることができない。In addition, in the conventional method of manufacturing thin plates from steel ingots by hot rolling and cold rolling, the steel ingot cracks during hot rolling, so the A
M cannot be contained.
本発明は、従来熱延ができないために実現していなかっ
た８重着％を超えるＡｌを含有する＃酸化性に優れたＦ
ｅ−Ｃｒ−高Ａｌ系合金およびその合金ｎ帯の製造方法
を提供するものである。The present invention is an F with excellent oxidation properties that contains more than 8% Al, which has not been realized due to the inability to hot-roll.
The present invention provides a method for producing an e-Cr-high Al alloy and an n-band alloy thereof.
Ｃ問題点を解決するための手段〕
本発明は、
イ） Ｃ：０．０３重量％以下
Ｓｉ：１重量％以下
Ｃｒ： １０重量％以上２５重量％以丁Ａｌ＝８重量％
を超え１５ｇＬ量％以丁Ｃｅ、Ｌａ、Ｐｒ、Ｎｄを総和
で０．０１ ％量％以上０．３０重量％以下
を含み残分がＦｅと不可避不純物よりなる耐酸化性に優
れたＦｅ−Ｃｒ−高Ａ交系合金。Means for Solving Problem C] The present invention provides the following features: a) C: 0.03% by weight or less Si: 1% by weight or less Cr: 10% by weight or more 25% by weight Al = 8% by weight
Fe-Cr with excellent oxidation resistance, containing Ce, La, Pr, and Nd in a total of 0.01% to 0.30% by weight, with the remainder being Fe and inevitable impurities. - High A crossed alloy.
口） Ｃ：０．０３重量％以下
Ｓｉ：１重量％以下
Ｃｒ：１０重重量以、ｆ：２５重量％以下Ａ立：８重量
１％を超え１５屯雀％以ｒＣｅ、Ｌａ、Ｐｒ、Ｎｄを総
和−ｒｏ、０１１’ｒ罎％以上０．３０重量％以下
Ｔｉ：５ＸＣ重量％以上０．１０重量％以下を含み残分
がＦｅと不可避不純物よりなる耐酸化性に優れたＦ ｅ
−Ｃｒ ｆ；５ Ａ ｌ系合金。C: 0.03% by weight or less Si: 1% by weight or less Cr: 10% by weight or more, f: 25% by weight or less A: 8 more than 1% by weight and 15% or less rCe, La, Pr, Nd Fe with excellent oxidation resistance, containing at least 0.30% by weight Ti: 5XC and at least 0.10% by weight, with the remainder being Fe and inevitable impurities.
-Cr f; 5 Al alloy.
である。It is.
次に本発明方法は上記の８．５重量％を超え１５重賃％
以下のＡｌを含むＦｅ−Ｃｒ−高Ａｌ合金薄帯を製造す
る方法であって、溶鋼を移動冷却体上に噴出して急冷凝
固させて薄帯にする方法によれば１５重量％Ａｌまでの
Ｆｅ−Ｃｒ−高Ａｌ合金を製造することができる。Next, the method of the present invention exceeds the above 8.5% by weight and 15% by weight.
The following method for producing a Fe-Cr-high Al alloy ribbon containing Al includes a method in which molten steel is injected onto a moving cooling body and rapidly solidified into a ribbon. Fe-Cr-high Al alloys can be produced.
本発明の高ＡｌのＦｅ−Ｃｒ−Ａ１合金は板厚３０〜４
０ｇｍでも十分な耐酸化性がある。The high Al Fe-Cr-A1 alloy of the present invention has a plate thickness of 30 to 4
It has sufficient oxidation resistance even at 0gm.
またこのような高Ａｌの合金薄帯はＬ記製造法によれば
熟延王程を経ないので割れ等の問題がなく、安価に安定
的に製造することができる。Furthermore, according to the L-manufacturing method, such a high-Al alloy ribbon does not undergo a mature rolling process, so there are no problems such as cracking, and it can be manufactured stably at low cost.
次に本発明合金における各成分の含有量の限定理由を述
べる。Next, the reason for limiting the content of each component in the alloy of the present invention will be described.
■ Ｃ：
Ｃは靭性を低下させ、冷間圧延性、加工性を悪化させる
のでｏ、 ０３ 屯’ｉｓ：％以下にする必寅がある。■ C: Since C reduces toughness and worsens cold rollability and workability, it is necessary to keep the content below 0.03 ton'is:%.
■ Ｓｌ：
耐酸化性向りに有効であるが冷間加工性を低ドさせるの
で１．０電縫％以下とした。■ Sl: Effective for improving oxidation resistance, but since it lowers cold workability, it was set to 1.0% or less of electric resistance welding.
（３）Ｃｒ： １０重量％未満では１耐酸化性が確保できず。(3) Cr: If it is less than 10% by weight, oxidation resistance cannot be ensured.
２５重量％を超えると急冷凝固時ノズルが詰りやすくな
るため１０〜２５重量％とじた。If it exceeds 25% by weight, the nozzle tends to become clogged during rapid solidification, so it is limited to 10 to 25% by weight.
■ Ａｌ：
８正量％以下では板厚３０〜４０ｇｍでの耐酸化性が確
保できず、１５正量％を超えると冷間加工が困難になる
ので８重量％を超え１５屯州％以下とした。■ Al: If it is less than 8% by mass, oxidation resistance cannot be ensured at a plate thickness of 30 to 40 gm, and if it exceeds 15% by mass, cold working will be difficult, so it should be more than 8% by mass and below 15% by mass. did.
■ 希土類元素（Ｃｅ、Ｌａ、Ｐｒ、Ｎｄ）：０．０１
重量％未満では酸化スケールの耐剥離性を確保できず、
０．３０重量％を超えて添加しても効果は変わらず、高
価になるだけなので０．０１重量％以上０．３０重電殺
以ドまでとした。■ Rare earth elements (Ce, La, Pr, Nd): 0.01
If it is less than % by weight, peeling resistance of oxide scale cannot be ensured,
Even if it is added in an amount exceeding 0.30% by weight, the effect will not change and the cost will increase, so it is limited to 0.01% by weight or more and 0.30% by weight or less.
■ Ｔｉ ：
以上の成分の他にＴｉを添加しても本発明の効果は同様
に発揮される。■Ti: Even if Ti is added in addition to the above-mentioned components, the effects of the present invention can be similarly exhibited.
Ｔｉは炭化物となってＣを固定することと、凝固組織を
微細化することにより靭性を向上させ、冷間圧延、加工
性を改善する。その場合、Ｃｅ度の５倍以上添加しない
と効果が現れないが、０．１重量％を超えて添加すると
耐酸化性を低ドさせるので、５ＸＣ重量％〜０．１０重
量％とした。Ti improves toughness by fixing C as a carbide and by refining the solidified structure, thereby improving cold rolling and workability. In that case, the effect will not appear unless it is added at least 5 times the degree of Ce, but if it is added in an amount exceeding 0.1% by weight, the oxidation resistance will be lowered, so it is set at 5XC weight% to 0.10% by weight.
第工表に本発明の実施例の合金と比較例の合金の化学成
分（重量％）を示す。ここでＲＥＭ本濃度とは希土類元
素を鉄合金に添加する場合に一般的に用いられるミツシ
ュメタル（Ｃｅ：４５〜５５重量％、Ｌａ：約２２〜３
Ｏｉ量％、Ｎｄ：１５〜ｔａ重量％、Ｐｒ：５重量％以
下、Ｆｅ：０．５〜３重１ａ：％でＹは含まない）を添
加した場合（７）（Ｃｅ＋Ｌａ＋Ｎｄ＋Ｐｒ） ｅ度を
示している。Table No. 1 shows the chemical components (% by weight) of the alloys of the examples of the present invention and the alloys of comparative examples. Here, the REM main concentration refers to mitshu metal (Ce: 45-55% by weight, La: approximately 22-3%), which is commonly used when adding rare earth elements to iron alloys.
(7) (Ce+La+Nd+Pr) shows the e degree. ing.
試料Ａｔ−Ａ４、試料Ｃ１〜Ｃ４は溶融したハＩ合金を
、アルゴン雰囲気中で、ロール周速２０ｍ／ ｓ ｅ
ｃで回転する直径６００ｍｍの単ロールに噴射し、急冷
凝固させて得た厚さ４０ルｍ、幅１００ｍｍの試料であ
る。この内Ｓｉが１．３重量％と高い値を示す試料Ｃ３
は幅方向直角曲げをすると割れ、ハニカム成形に必要な
波板加工ができないため、以後の試験は行わなかった。Samples At-A4 and Samples C1 to C4 were prepared by rolling the molten Hi-I alloy in an argon atmosphere at a roll circumferential speed of 20 m/sec.
A sample with a thickness of 40 mm and a width of 100 mm was obtained by spraying onto a single roll with a diameter of 600 mm rotating at speed c and rapidly solidifying it. Sample C3 shows a high Si content of 1.3% by weight.
Since the material cracked when bent at right angles in the width direction, and the corrugated sheet processing required for honeycomb formation was not possible, further tests were not conducted.
試料Ｂ１−８２．試料ＤＩ−Ｄ３は、溶融した母合金を
、アルゴン雰囲気中で、ロール周速３ｍ／ ｓ ｅ ｃ
で回転する直径５５０ｍｍの双ロールに噴射し、急冷凝
固させて厚さ０．３ ｍ ｍ、幅５５０ｍ ’ｍの銅帯
を製作し、その後冷間・温間圧延、焼鈍、脱スケールを
行って得た厚さ４０ルｍの試料である。この内、Ｃが０
．０３７重量％と高い試料Ｄ１は温間圧延でも圧延中に
割れたので、以後の試験は行わなかった。Sample B1-82. In sample DI-D3, the molten master alloy was rolled at a peripheral speed of 3 m/sec in an argon atmosphere.
The copper strip is injected into twin rolls with a diameter of 550 mm rotating at a rotating speed, and rapidly solidified to produce a copper strip with a thickness of 0.3 mm and a width of 550 mm, followed by cold/warm rolling, annealing, and descaling. This is the obtained sample with a thickness of 40 lm. Among these, C is 0
．． Sample D1, which had a high 0.037% by weight, cracked during rolling even during warm rolling, so further tests were not conducted.
以上の試料から板厚４０７ｚｍ、幅２０ｍｍ、長さ３０
ｍｍの試験片を採取して、１１５０℃大気中雰囲気で酸
化試験を行った。From the above samples, the plate thickness is 407 zm, the width is 20 mm, and the length is 30 mm.
A test piece of mm was taken and subjected to an oxidation test at 1150° C. in the air.
その結果の一部を第１図に示す。Ｃｒが９．２重量％と
低い試料Ｃ１、Ａｌが７．２重量％と低い試本’ｌｃ２
、Ｔｉが０．２６重量％と高い試料Ｄ２は５０〜７５時
間で完全に酸化し原形をとどめていない。Some of the results are shown in FIG. Sample C1 with a low Cr content of 9.2% by weight, and sample 'lc2 with a low Al content of 7.2% by weight.
Sample D2, which has a high Ti content of 0.26% by weight, was completely oxidized in 50 to 75 hours and did not retain its original shape.
次に同一形状の試験片を１１５０℃大気中雰囲気で３０
分間酸化させた後、１２分間急冷するのを１回として、
２００回の繰返し酸化を行った後、走査型電子顕微鏡で
酸化スケールの状態を検査した。実施例の鋼には酸化ス
ケールの剥離は全く見られなかったが、希土類元素がｏ
、ｏｉ重量％未猫の試料Ｃ４，試料Ｄ３は酸化スケール
が全面的に剥離していた。Next, a test piece of the same shape was heated to 1150℃ in an atmosphere for 30 minutes.
After oxidizing for 1 minute, quenching for 12 minutes is considered as one time.
After oxidation was repeated 200 times, the state of the oxide scale was examined using a scanning electron microscope. Although no peeling of oxide scale was observed in the steel of the example, rare earth elements
, oi wt % Sample C4 and Sample D3, which had oi weight %, had the oxide scale completely peeled off.
以上の結果を総合して第１表中に合わせて評価したが、
本発明の範囲にあるＦｅ−Ｃｒ−高Ａｌ系合金は製造性
、各種の特性に優れていることは明白である。なお、こ
こでの評価の区分は以下の基準による。The above results were combined and evaluated in Table 1,
It is clear that the Fe-Cr-high Al alloy within the scope of the present invention is excellent in manufacturability and various properties. The evaluation classification here is based on the following criteria.
製造性：
Ｑ：４０ＪＬｍ厚まで製造後、ｒ ＝ ０．２ ｍｍテ
９０度の曲げ加工ができる。Manufacturability: Q: After manufacturing to a thickness of 40 JLm, it is possible to bend 90 degrees at r = 0.2 mm.
Ｘ：４０ｐｍ厚まで製造不可能かまたは製造できても曲
げ加工ができない。X: Cannot be manufactured up to a thickness of 40 pm, or cannot be bent even if manufactured.
耐酸化性：
０：４０ｐｍ厚の箔で１１５０℃Ｘ１４４時間大気中加
熱後の重量増加が１．５ｍｇ／ｃｒｎ’未満。Oxidation resistance: Weight increase after heating in air at 1150°C for 144 hours with a 0:40 pm thick foil is less than 1.5 mg/crn'.
Ｘ：４０ｐｍ厚の箔’ｔ’ｔｔｓｏ℃×１４４時間大気
中加熱後の重量増加が１．５ ｍ ｇ ／Ｃゴ以上。X: Weight increase of 40 pm thick foil after heating in air for 144 hours at 1.5 mg/C or more.
耐ｔＡａ性：
○：４０μｍ厚の箔で１１５０℃大気中３０分間加８後
１２分間急冷を１回として
２００回繰返した＠酸化スケールの剥離がないもの。tAa resistance: ○: A 40 μm thick foil was heated in air at 1150° C. for 30 minutes and then rapidly cooled for 12 minutes, which was repeated 200 times. @No peeling of oxide scale.
Ｘ：４０ｇｍ厚の箔で１１５０℃大気中３０分間加熱後
１２分間急冷を１＠とじて
２００回繰返したとき酸化スケールの剥離があるもの。X: 40 gm thick foil with peeling of oxide scale when heated at 1150°C in air for 30 minutes and then rapidly cooled for 12 minutes 200 times at 1@.
また、前述の特開昭５６〜９６７２６号公報では特殊な
熱処理で表面に長さ数ＪＬｍのＡＭ２０３ウィスカーを
生成した上に、触媒のコーティングを行っている６本発
明鋼もこれと同一の熱処理を行った場合、良好なＡ１２
０３ウイスカーが生成するので、この製造方法による触
媒コンバータにも好適である。In addition, in the above-mentioned Japanese Patent Application Laid-open No. 56-96726, AM203 whiskers several JLm in length were formed on the surface by special heat treatment, and the six invention steels were also coated with a catalyst. If done, good A12
Since 03 whiskers are generated, this manufacturing method is also suitable for catalytic converters.
以りの実験結果が示すように、本発明鋼は、耐酸化性に
優れており、かつ安価であることから自動屯の触媒コン
バータ用ステンレス箔に最適であり、公害対策上におけ
るメリットは大きい、また他の過酷な繰返し酸化を受け
る用途にも有用である。As the above experimental results show, the steel of the present invention has excellent oxidation resistance and is inexpensive, making it ideal for stainless steel foil for catalytic converters in automatic tunnels, and has great advantages in terms of pollution control. It is also useful in other applications that undergo severe repeated oxidation.
本発明方法により従来は製造不可壱であった上記の優れ
た特性をもつ薄帯を容易に安価に製造することができる
。By the method of the present invention, it is possible to easily and inexpensively produce a ribbon having the above-mentioned excellent properties, which was previously impossible to produce.
第１図は厚さ４０ｇｍの箔での酸化試験結果を示すグラ
フである。FIG. 1 is a graph showing the results of an oxidation test on a foil having a thickness of 40 gm.
Claims (1)
．３０重量％以下 を含み残分がＦｅと不可避不純物よりなる耐酸化性に優
れたＦｅ−Ｃｒ−高Ａｌ系合金。 ２ Ｃ：０．０３重量％以下 Ｓｉ：１重量％以下 Ｃｒ：１０重量％以上２５重量％以下 Ａｌ：８重量％を超え１５重量％以下 Ｃｅ、Ｌａ、Ｐｒ、Ｎｄを総和で０．０１重量％以上０
．３０重量％以下 Ｔｉ：５×Ｃ重量％以上０．１０重量％以下を含み残分
がＦｅと不可避不純物よりなる耐酸化性に優れたＦｅ−
Ｃｒ−高Ａｌ系合金。 ３ Ｃ：０．０３重量％以下 Ｓｉ：１重量％以下 Ｃｒ：１０重量％以上２５重量％以下 Ａｌ：８重量％を超え１５重量％以下 Ｃｅ、Ｌａ、Ｐｒ、Ｎｄを総和で０．０１重量％以上０
．３０重量％以下 を含有する組成の溶鋼を移動冷却体上に噴出して急冷凝
固させることを特徴とする耐酸化性に優れたＦｅ−Ｃｒ
−高Ａｌ系合金薄帯の製造方法。[Claims] 1 C: 0.03 wt% or less Si: 1 wt% or less Cr: 10 wt% or more and 25 wt% or less Al: More than 8 wt% and 15 wt% or less Ce, La, Pr, Nd 0.01% by weight or more in total
．． A Fe-Cr-high Al alloy with excellent oxidation resistance, containing 30% by weight or less, with the remainder consisting of Fe and unavoidable impurities. 2 C: 0.03 wt% or less Si: 1 wt% or less Cr: 10 wt% or more and 25 wt% or less Al: More than 8 wt% and 15 wt% or less Ce, La, Pr, and Nd total 0.01 weight % or more 0
．． 30% by weight or less Ti: 5×C by weight or more and 0.10% by weight or less, and the remainder is Fe and unavoidable impurities. Fe- with excellent oxidation resistance.
Cr-high Al alloy. 3 C: 0.03 wt% or less Si: 1 wt% or less Cr: 10 wt% or more and 25 wt% or less Al: More than 8 wt% and 15 wt% or less Ce, La, Pr, and Nd total 0.01 weight % or more 0
．． Fe-Cr with excellent oxidation resistance, characterized in that molten steel containing 30% by weight or less is jetted onto a moving cooling body and rapidly solidified.
- A method for producing a high Al-based alloy ribbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18338186A JPS6342356A (en) | 1986-08-06 | 1986-08-06 | Fe-cr-high al alloy excellent in oxidation resistance and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18338186A JPS6342356A (en) | 1986-08-06 | 1986-08-06 | Fe-cr-high al alloy excellent in oxidation resistance and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6342356A true JPS6342356A (en) | 1988-02-23 |
Family
ID=16134773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18338186A Pending JPS6342356A (en) | 1986-08-06 | 1986-08-06 | Fe-cr-high al alloy excellent in oxidation resistance and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6342356A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02303605A (en) * | 1989-05-16 | 1990-12-17 | Nippon Steel Corp | Production of stainless steel foil for exhaust gas catalyst carrier of automobile |
| JP2006175346A (en) * | 2004-12-22 | 2006-07-06 | Nippon Steel Corp | Metal carrier for catalyst supports excellent in structural durability |
| CN103952631A (en) * | 2014-05-22 | 2014-07-30 | 哈尔滨工业大学 | Large-sized ferrite ODS alloy sheet material with high aluminum content and preparation method thereof |
| CN103966513A (en) * | 2014-05-22 | 2014-08-06 | 哈尔滨工业大学 | Large-size high-aluminum-content iron-chromium-aluminum alloy sheet material and preparation method thereof |
| CN103966512A (en) * | 2014-05-22 | 2014-08-06 | 哈尔滨工业大学 | Large-size gradient-aluminum-content iron-chromium-aluminum ODS (oxide dispersion strengthened) alloy sheet material, and preparation method and application thereof |
| CN103966511A (en) * | 2014-05-22 | 2014-08-06 | 哈尔滨工业大学 | Large-size gradient-aluminum-content iron-chromium-aluminum alloy sheet material, and preparation method and application thereof |
-
1986
- 1986-08-06 JP JP18338186A patent/JPS6342356A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02303605A (en) * | 1989-05-16 | 1990-12-17 | Nippon Steel Corp | Production of stainless steel foil for exhaust gas catalyst carrier of automobile |
| JP2006175346A (en) * | 2004-12-22 | 2006-07-06 | Nippon Steel Corp | Metal carrier for catalyst supports excellent in structural durability |
| JP4684645B2 (en) * | 2004-12-22 | 2011-05-18 | 新日鉄マテリアルズ株式会社 | Metal carrier for catalyst support with excellent structural durability |
| CN103952631A (en) * | 2014-05-22 | 2014-07-30 | 哈尔滨工业大学 | Large-sized ferrite ODS alloy sheet material with high aluminum content and preparation method thereof |
| CN103966513A (en) * | 2014-05-22 | 2014-08-06 | 哈尔滨工业大学 | Large-size high-aluminum-content iron-chromium-aluminum alloy sheet material and preparation method thereof |
| CN103966512A (en) * | 2014-05-22 | 2014-08-06 | 哈尔滨工业大学 | Large-size gradient-aluminum-content iron-chromium-aluminum ODS (oxide dispersion strengthened) alloy sheet material, and preparation method and application thereof |
| CN103966511A (en) * | 2014-05-22 | 2014-08-06 | 哈尔滨工业大学 | Large-size gradient-aluminum-content iron-chromium-aluminum alloy sheet material, and preparation method and application thereof |
| CN103952631B (en) * | 2014-05-22 | 2016-04-06 | 哈尔滨工业大学 | Large size high aluminium content ferrite ODS latten material and preparation method thereof |
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