JPH0428833A - Method for compacting fe-al series intermetallic compound member - Google Patents
Method for compacting fe-al series intermetallic compound memberInfo
- Publication number
- JPH0428833A JPH0428833A JP2134578A JP13457890A JPH0428833A JP H0428833 A JPH0428833 A JP H0428833A JP 2134578 A JP2134578 A JP 2134578A JP 13457890 A JP13457890 A JP 13457890A JP H0428833 A JPH0428833 A JP H0428833A
- Authority
- JP
- Japan
- Prior art keywords
- intermetallic compound
- mixture
- powder
- temperature
- compound member
- 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.)
- Pending
Links
- 229910000765 intermetallic Inorganic materials 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims description 34
- 239000000843 powder Substances 0.000 claims abstract description 33
- 239000000203 mixture Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 229910000640 Fe alloy Inorganic materials 0.000 claims description 4
- 229910000838 Al alloy Inorganic materials 0.000 claims description 3
- 238000010304 firing Methods 0.000 claims description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 239000011148 porous material Substances 0.000 abstract description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 35
- 229910052737 gold Inorganic materials 0.000 description 35
- 239000010931 gold Substances 0.000 description 35
- 238000000280 densification Methods 0.000 description 11
- 238000000465 moulding Methods 0.000 description 10
- 238000005275 alloying Methods 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 238000007872 degassing Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910015370 FeAl2 Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009689 gas atomisation Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明はＦｅ−Ａｌ系金金属間化合物部材成形方法に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for forming a Fe-Al based gold intermetallic compound member.
［従来の技術］
従来より、正原子価乞もつ金属元素同志で化合物をつく
る金属間化合物の一種であるＦｅ−Ａｌ系金金属間化合
物、優れた高温強度及び耐食性を有するため、低価格な
高温用構造材料として注目されている。[Prior art] Fe-Al based gold intermetallic compounds, which are a type of intermetallic compounds that form compounds with metallic elements with high positive valences, have been used as low-cost high-temperature compounds because they have excellent high-temperature strength and corrosion resistance. It is attracting attention as a structural material for industrial use.
［発明が解決しようとする課題］
ところが、Ｆｅ−Ａｌ系金金属間化合物、常温及び高温
で展延性に乏しいので、成形加工することが難しく、実
用材料に供することが困難であるという問題点があった
そこで本発明は、Ｆｅ−Ａｌ系金金属間化合物部材容易
に成形することができるＦｅ−Ａｌ系金金属間化合物部
材成形方法を提供することを目的としてなされた。[Problems to be Solved by the Invention] However, since the Fe-Al-based gold intermetallic compound has poor malleability at room temperature and high temperature, it is difficult to form and process it, and it is difficult to use it as a practical material. Therefore, the present invention has been made with the object of providing a method for forming a Fe-Al based gold intermetallic compound member, which can easily form an Fe-Al based gold intermetallic compound member.
［課題を解決するための手段］
前記目的を達するためになされた請求項］の発明は、
Ａｌ１２〜６０重量％、Ｆｅ４０〜８８重量％の割合で
、Ａｌ又はＡΩ合金の粉末とＦｅ又はＦｅ合金の粉末と
を混合し、この混合物をＦｅ−Ａｌ系金金属間化合物形
成する温度以上でかつ該化合物の固相線以下の温度で熱
処理することを特徴とするＦｅ−Ａｌ系金金属間化合物
部材成形方法を要旨とする。[Means for Solving the Problems] The invention described in Claims made to achieve the above object is as follows: Al or AΩ alloy powder and Fe or Fe alloy powder in a proportion of 12 to 60% by weight of Al and 40 to 88% by weight of Fe. A Fe-Al-based gold intermetallic compound member, characterized in that the mixture is heat-treated at a temperature above the temperature at which the Fe-Al-based gold intermetallic compound is formed and below the solidus line of the compound. The gist is the molding method.
ここで、Ｆｅ−ＡΩ系金属間化合物とは、例えばＦｅ５
Ａｌ、ＦｅＡＪ Ｆｅ２ＡΩｓ、ＦｅＡＬで示される
金属間化合物である。Here, the Fe-AΩ intermetallic compound is, for example, Fe5
It is an intermetallic compound represented by Al, FeAJ Fe2AΩs, and FeAL.
尚、この熱処理の温度１上 前記温度範囲であればよい
が、混合物の成分組成により最適な熱処理の温度は異な
る。The temperature of this heat treatment may be within the above-mentioned temperature range, but the optimum temperature of the heat treatment differs depending on the component composition of the mixture.
また、請求項２の発明は、
前記請求項１のＦｅ−Ａｌ系金金属間化合物部材成形方
法において、前記混合物を真空脱気し、その後緻密化す
る処理を行い、更に前記熱処理の温度範囲でかつ２００
気圧以上で加熱焼成することを特徴とするＦｅ−Ａｌ系
金金属間化合物部材成形方法を要旨とする。Further, the invention of claim 2 provides the method for forming a Fe-Al-based gold intermetallic compound member of claim 1, wherein the mixture is vacuum degassed and then densified, and further within the temperature range of the heat treatment. And 200
The gist of the present invention is a method for forming a Fe-Al based gold intermetallic compound member, which is characterized by heating and firing at a pressure higher than atmospheric pressure.
［作用コ
請求項１の発明（友
まず、Ａｌ又はＡｌ合金の粉末を製造し、またＦｅ又は
Ｆｅ合金の粉末を製造する。そして、これらの粉末を混
合して、Ａｌ１２〜６０重量％。[Function] Invention of Claim 1 (First, a powder of Al or an Al alloy is produced, and a powder of Fe or an Fe alloy is also produced. Then, these powders are mixed to produce 12 to 60% by weight of Al.
Ｆｅ４０〜８８重量％の割合の混合物を調製する。A mixture with a proportion of 40-88% by weight of Fe is prepared.
その後、この混合物を特定の温度範囲で、即ち、Ｆｅ−
Ａｌ系金金属間化合物形成する温度以上でかつ該化合物
の固相線以下の温度で熱処理する。This mixture is then heated in a specific temperature range, i.e. Fe-
Heat treatment is performed at a temperature higher than the temperature at which an Al-based gold intermetallic compound is formed and lower than the solidus line of the compound.
この様にして、Ｆｅ−Ａｌ系金金属間化合物部材成形を
行う。In this manner, the Fe-Al based gold intermetallic compound member is formed.
つまり、本発明は粉末冶金法に着目して、Ｆｅ−Ａｌ系
金金属間化合物部材成形することを特徴とするものであ
り、前記所定の組成の粉体温合物を、所定の温度範囲で
熱処理することにより、Ｆｅ−ＡＤ系金金属間化合物部
材容易に成形することが可能となる。That is, the present invention is characterized by focusing on powder metallurgy to form Fe-Al-based gold intermetallic compound members, and heat-treating the powder composite having the predetermined composition at a predetermined temperature range. By doing so, it becomes possible to easily mold the Fe-AD based gold intermetallic compound member.
また、請求項２の発明は、
まず、前記請求項１と同様な混合物を調製した後に、空
孔の発生を防止するために真空脱気する。In addition, in the invention according to claim 2, first, a mixture similar to that in claim 1 is prepared and then vacuum degassed in order to prevent the generation of pores.
その後、この混合物を例えばホットプレス等で緻密化す
る処理を行う。次に、前記熱処理の温度範囲で２００気
圧以上に加圧して加熱焼成することにより、Ｆｅ−Ａｌ
系金金属間化合物部材成形を行う。Thereafter, this mixture is densified by, for example, hot pressing. Next, the Fe-Al
Performs molding of gold-based intermetallic compound parts.
本発明（よ相対密度を一層向上させるために請求項１の
発明の工程に加えて、脱気及び緻密化の処理工程を加え
、更に高温加圧の処理を行うものである。The present invention (in order to further improve the relative density), in addition to the steps of the invention of claim 1, a deaeration and densification treatment step is added, and a high temperature pressurization treatment is further performed.
［実施例］ 以下本発明の実施例を図面に基づいて説明する。[Example] Embodiments of the present invention will be described below based on the drawings.
第１図は第１実施例のＦｅ−Ａｌ系金金属間化合物部材
成形方法を表す工程図である。FIG. 1 is a process diagram showing a method of forming a Fe-Al based gold intermetallic compound member according to a first embodiment.
図に示すように本実施例のＦｅ−Ａｌ系金金属間化合物
部材成形方法は、次のような工程からなっている。As shown in the figure, the method for forming the Fe--Al based gold intermetallic compound member of this example includes the following steps.
（Ｆｅ粉末の製造工程・・・１）
Ｆｅ粉末としては、従来の粉末製造方法や鋳塊等の切削
で製作されたものを用いることができ、その粒度を１μ
ｍから１０００μｍに調整したものを用いる。尚、Ｆｅ
粉末以外にも、例えば５２０Ｃ等のＦｅ合金の粉末を用
いることもできる。(Manufacturing process of Fe powder...1) Fe powder manufactured by conventional powder manufacturing methods or cutting of ingots etc. can be used, and the particle size is 1 μm.
Use one adjusted from m to 1000 μm. Furthermore, Fe
In addition to powder, for example, Fe alloy powder such as 520C can also be used.
（Ａｌ粉末の製造工程・・・１１）
Ａｌ粉末としては、Ｆｅ粉末と同様に従来の粉末製造方
法により製造されるが、望ましくは、価格の点からガス
アトマイズ法を用いるのがよい。(Manufacturing process of Al powder...11) As with the Fe powder, the Al powder is manufactured by a conventional powder manufacturing method, but it is preferable to use the gas atomization method from the viewpoint of cost.
粒度は１μｍから１０００μｍに調整したものを用いる
。尚、ＡｌＱ末以外にも、例えばＡ６０６１等のＡｌ合
金の粉末を用いることもできる。The particle size is adjusted to 1 μm to 1000 μm. In addition to AlQ powder, for example, Al alloy powder such as A6061 can also be used.
（混合工程・・・１１１）
次にＦｅ粉末とＡｌ粉末とを、Ａｌ１２〜６０重量％、
残部Ｆｅの割合になるように、Ｖ形混合機等で混合する
。(Mixing step...111) Next, Fe powder and Al powder were mixed with 12 to 60% by weight of Al,
Mix using a V-type mixer or the like so that the remaining proportion is Fe.
この様な混合割合にするのは、Ａｌが１２〜６０重量％
の範囲外では、製造する部材の全体を所定（７）Ｆｅ−
Ａｌ系金金属間化合物Ｆｅ３ＡＩ２．ＦｅＡｌ２．Ｆｅ
２ＡＩ２５．ＦｅＡＵ３）とすることが困難となるから
である。To achieve such a mixing ratio, Al should be 12 to 60% by weight.
Outside the range of (7) Fe-
Al-based gold intermetallic compound Fe3AI2. FeAl2. Fe
2AI25. This is because it becomes difficult to obtain FeAU3).
（熱処理工程−・・ＩＶ）
次に、前記混合工程１１１により所定の割合で調整され
た混合物の全体または一部を、５００℃以上で、かつ固
相線以下の温度で、加熱することにより、ＦｅとＡｌと
の合金化反応を生じさせ、Ｆｅ−Ａｌ系金金属間化合物
部材成形する。(Heat treatment step - IV) Next, by heating the whole or a part of the mixture adjusted at a predetermined ratio in the mixing step 111 at a temperature of 500 ° C. or higher and a solidus temperature or lower, An alloying reaction between Fe and Al is caused to form a Fe-Al based gold intermetallic compound member.
尚、このときの雰囲気は、真空中又は不活性ガス（Ｈｅ
、Ａｒ等）中とする。The atmosphere at this time is a vacuum or an inert gas (He
, Ar, etc.).
上述した様な方法でＡｌとＦｅの混合物を熱処理して成
形することにより、容易に、高温強度及び耐食性に優れ
たＦｅ−Ａｌ系金金属間化合物部材製造することができ
た。By heat-treating and molding a mixture of Al and Fe in the manner described above, it was possible to easily produce a Fe-Al-based gold intermetallic compound member with excellent high-temperature strength and corrosion resistance.
次に、第２実施例について、第２図に基づいて説明する
。Next, a second embodiment will be described based on FIG. 2.
本実施例（上前記第１実施例に更に緻密化のための工程
を加えたものである。即ち、固相間の拡散によるカーケ
ンドルボイドによって、通常多数の空洞が発生するが、
この様な空洞を潰して緻密化を促進するために、次に説
明する第２実施例のＦｅ−Ａｌ系金金属間化合物部材成
形方法を採用した。This example (this example is one in which a step for densification is added to the above-mentioned first example). That is, a large number of cavities are normally generated due to Kirkendall voids due to diffusion between solid phases.
In order to collapse such cavities and promote densification, a method for forming a Fe-Al based gold intermetallic compound member according to a second embodiment described below was employed.
第２図に示すように、第２実施例のＦｅ−Ａｌ２系金属
間化合物部材の成形方法は、前記第１実施例の混合工程
１１１に引き続き、次のような工程の処理を行う。As shown in FIG. 2, the method for forming the Fe--Al2 intermetallic compound member of the second embodiment includes the following steps subsequent to the mixing step 111 of the first embodiment.
（脱気工程・・・■）
前記混合工程１１１で調製した混合物を、Ｆｅ、Ｔ等か
らなる密閉した容器に収納して、真空ポンプにて脱気処
理を行う。(Degassing step...■) The mixture prepared in the mixing step 111 is placed in a sealed container made of Fe, T, etc., and degassed using a vacuum pump.
これは、粉末表面の吸着ガス、吸着水を除去すすると共
に、後の工程に於けるＦｅ−Ａｌ系金金属間化合物部材
酸化を防止するためである。このため真空度は］Ｏ−２
気圧以下とするのが好ましい。This is to remove adsorbed gas and adsorbed water on the powder surface and to prevent oxidation of the Fe-Al based gold intermetallic compound member in the subsequent process. Therefore, the degree of vacuum is ]O-2
It is preferable that the pressure be below atmospheric pressure.
また、脱気処理温度は、常温〜５５０°Ｃで行う。Further, the deaeration treatment temperature is from room temperature to 550°C.
特に４００〜５００℃で脱気処理を行うと、吸着ガス、
吸着水の除去がより効果的である。In particular, when deaeration treatment is performed at 400 to 500°C, adsorbed gas,
Removal of adsorbed water is more effective.
尚、脱気処理温度が５５０℃を超える場合には、Ｆｅと
Ａｌとの急激な合金化反応（急激な合金化反応二合金化
反応の生成熱によりこの反応が次々と伝播していく現象
）が生じることがあり好ましくない。If the degassing temperature exceeds 550°C, a rapid alloying reaction between Fe and Al (a phenomenon in which this reaction propagates one after another due to the heat generated by the rapid alloying reaction and the alloying reaction). may occur, which is undesirable.
また、前記脱気工程■を行う前に、混合工程１１１で調
製した混合物を、冷間静水圧プレス（ＣＩ Ｐ：Ｃｏ１
ｄ １ｓｏｓｔａｔｉｃ Ｐｒｅｓｓ）や−軸プレスに
より圧縮すると、相対密度が上昇し取り扱いが容易にな
るので好適である。ここで、相対密度とは混合物の密度
を完全に緻密化した場合の密度に対する割合（％）とし
て表したものである。Furthermore, before performing the degassing step (1), the mixture prepared in the mixing step 111 is subjected to a cold isostatic press (CI P: Co1
It is preferable to compress using a d 1sostatic press or a -axial press because the relative density increases and handling becomes easier. Here, the relative density is expressed as a ratio (%) of the density of the mixture to the density when it is completely densified.
（緻密化工程・・・Ｖ＋）
前記脱気工程■で脱気された混合物を、ホットプレス、
押出、圧延、鍛造ＣＩ Ｐ、 或いはＨＰ （Ｈｏｔ
１ｓｏｓｔａｔｉｃ Ｐｒｅｓｓ）等により、相対密度
が９５％以上になるように圧縮し、粉末圧縮体（緻密体
）とする。(Densification process...V+) The mixture degassed in the degassing process (■) is hot pressed,
Extrusion, rolling, forging CI P, or HP (Hot
The powder is compressed to a relative density of 95% or more using a 1sostatic press or the like to form a compressed powder body (dense body).
この緻密化は、後述する処理である高温高圧処理工程Ｖ
ｌｌ＋において合金化をより容易にするためと、最終製
品の相対密度を９５％以上にするために行うものである
。This densification is achieved in the high temperature and high pressure treatment step V, which will be described later.
This is done to make alloying easier in ll+ and to increase the relative density of the final product to 95% or more.
また、この緻密化工程■１は、「ｅとＡｌとの急激な合
金化反応を防止するため５５０’Ｃ以下で実施される。Further, this densification step (1) is carried out at 550'C or lower in order to prevent a rapid alloying reaction between e and Al.
このため、本工程の緻密化では、殆どＦｅ−Ａｌ系金金
属間化合物形成されない。Therefore, during the densification in this step, almost no Fe-Al based gold intermetallic compound is formed.
尚、前記脱気工程■と緻密化工程ｖ１とを、真空ホット
プレスを用いて同時に行ってもよい。Incidentally, the degassing step (1) and the densification step v1 may be performed simultaneously using a vacuum hot press.
（成形工程・・・Ｖｌｌ）
前記緻密化工程■１によって形成された緻密体に、塑性
加工或いは機械加工などを行って、はぼ最終の製品形状
に仕上げる。(Forming process...Vll) The dense body formed in the densification process (1) is subjected to plastic working or machining to form the final product shape.
前記緻密体は、殆どＦｅ−Ａｌ系金金属間化合物形成さ
れていないので展延性に富み、このため、塑性加工或い
は機械加工などが容易に行える。The dense body has high malleability since almost no Fe-Al based gold intermetallic compounds are formed therein, and therefore can be easily subjected to plastic working or machining.
尚、この成形工程■１の処理は、混合工程ＩＩ＋の後に
、粉末鍛造などで行ってもよい。Incidentally, this molding step (1) may be performed by powder forging or the like after the mixing step II+.
（高温高圧処理工程・・・■１１）
前記緻密化工程ｖ１、或いは成形工程■１で得た緻密体
を高温高圧処理する。(High-temperature, high-pressure treatment step...■11) The dense body obtained in the densification step v1 or molding step (1) is subjected to high-temperature and high-pressure treatment.
このとき、圧力は少なくとも２００気圧以上望ましくは
５００気圧〜７０００気圧に設定し、処理温度は５５０
°ＣからＦｅ−ＡΩ系金属間化合物の同相線温度までと
する。At this time, the pressure is set to at least 200 atm or more, preferably 500 atm to 7000 atm, and the treatment temperature is set at 550 atm.
°C to the in-phase temperature of the Fe-AΩ intermetallic compound.
これ未処理温度が５５０°Ｃ未満であるとＦｅとＡｌと
の急激な合金化反応が進行せず、一方、本化合物の固相
点温度より高いと、材料が一部溶解し、部材としての形
状が保てないからである。If the untreated temperature is less than 550°C, the rapid alloying reaction between Fe and Al will not proceed. On the other hand, if it is higher than the solidus point temperature of this compound, part of the material will melt and it will not work as a member. This is because the shape cannot be maintained.
（仕上げ成形工程・・・ＩＸ）
前記高温高圧処理工程■１の後１ミ機械加工な−により
最終製品の形状に仕上げる。(Final molding process...IX) After the high temperature and high pressure treatment process (1), the shape of the final product is finished by machining.
上述したような工程で処理されたＦｅ−Ａｌ、１金属間
化合物部材に（よ空洞が殆どないので和文密度が高い。The Fe-Al, 1 intermetallic compound member processed through the process described above has a high Japanese density because there are almost no cavities.
（実験例） 次に、前記各実施例における実験例についてＢ明する。(Experiment example) Next, experimental examples in each of the above embodiments will be explained.
この実験で（よ原料として、粒径７４８℃以１のＦｅ粉
末と粒径１４９μｍ以下のＡｌ粉末とを用い、Ｖ型混合
機を使用して所定の割合の混合物を調製した次いで、そ
の混合物を用いて、前記第１実施例及び第２実施例の成
形方法で、Ｆｅ−Ａｌ系金金属間化合物部材成形、し、
それとともに他の条件で比較例部材を成形した そして
、Ｘ線解析により、Ｆｅ−Ａｌ系金金属間化合物部材状
態を調べ更に相対密度も調べた
下記の表１に、その成形の条件及び実験の結果を示す。In this experiment, Fe powder with a particle size of 748°C or more and Al powder with a particle size of 149 μm or less were used as raw materials to prepare a mixture at a predetermined ratio using a V-type mixer. to form a Fe-Al-based gold intermetallic compound member using the molding methods of the first and second embodiments,
At the same time, a comparative example member was molded under other conditions. Then, the state of the Fe-Al based gold intermetallic compound member was investigated by X-ray analysis, and the relative density was also investigated. Table 1 below shows the molding conditions and experimental results. Show the results.
この実験例のうち、試料Ｎ１１ｌ〜５が第１実施例であ
り、試料Ｎα６〜］１が第２実施例であり、試料Ｎα］
２〜１４が比較例である。Among these experimental examples, samples N11l~5 are the first example, samples Nα6~]1 are the second example, and samples Nα]
2 to 14 are comparative examples.
表１の脱気処理の条件としては、］］０−６気の状態で
４００℃で１時間加熱を採用し、加熱した例を「○」で
示した また、表１の判定において、「○Ｊ或いは「◎
」（よ実験の結果、Ｆｅ−Ａｌ系金金属間化合物認めら
れたものを示し、この内「◎」は、相対密度が９５％以
上のものを示し、一方「○」は相対密度が９５％以下の
ものを示す。The conditions for the deaeration treatment in Table 1 are heating at 400°C for 1 hour in a state of ]]0-6 air, and examples of heating are indicated by "○". J or “◎
(Indicates that a Fe-Al-based gold intermetallic compound was observed as a result of the experiment. Among these, "◎" indicates a compound with a relative density of 95% or more, while "○" indicates a compound with a relative density of 95%. Indicates the following:
また「×」は、主にＦｅ−Ａｌ系金金属間化合物はなく
α−Ｆｅ或いはＡｌが認められたものを示す。Moreover, "x" indicates that no Fe-Al based gold intermetallic compound was present but α-Fe or Al was observed.
表
この表から、第１実施例及び第２実施例の成形方法では
、明らかにＦｅ−Ａｌ系金金属間化合物形成されている
ことがわかるが、特に第２実施例の成形方法では、相対
密度の高いＦｅ−Ａｌ系金金属間化合物形成されるので
好適である。それに対して比較例のものＩＬＦｅ−Ａｌ
系金金属間化合物主に形成されておらず不適である。Table From this table, it can be seen that Fe-Al based gold intermetallic compounds are clearly formed in the molding methods of the first and second examples, but especially in the molding method of the second example, the relative density This is preferable because it forms a Fe-Al based gold intermetallic compound with a high content. In contrast, ILFe-Al of the comparative example
It is unsuitable because gold intermetallic compounds are not mainly formed.
［発明の効果］
以上詳述したように、請求項１の発明のＦｅ−Ａｌ系金
金属間化合物部材成形方法によれば、Ｆｅ粉末とＡｌ粉
末とを所定の割合で混合して、所定温度範囲で熱処理を
するだけでＦｅ−、ｌ！系金金属間化合物部材、容易に
成形することができる。[Effects of the Invention] As described in detail above, according to the method for forming a Fe-Al based gold intermetallic compound member of the invention of claim 1, Fe powder and Al powder are mixed at a predetermined ratio and heated to a predetermined temperature. Fe-, l! just by heat treatment in the range! Gold intermetallic parts can be easily formed.
更に、請求項２のＦｅ−Ａｌ系金金属間化合物部材成形
方法にょれ（戯脱気−緻密化−高温高圧の処理を加える
ことにより、より緻密なＦｅ−Ａｌ系金金属間化合物部
材容易に成形することができる。Furthermore, by adding a process of dry degassing, densification, and high temperature and high pressure to the method for forming a Fe-Al based gold intermetallic compound member of claim 2, it is possible to easily form a more dense Fe-Al based gold intermetallic compound member. Can be molded.
第１図は第１実施例のＦｅ−Ａｌ系金属間化合物部材の
成形方法を表す工程図、第２図は第２実施例のＦｅ−Ａ
ｌ系金金属間化合物部材成形方法を表す工程図である。Figure 1 is a process diagram showing the method for forming the Fe-Al intermetallic compound member of the first embodiment, and Figure 2 is the Fe-A
FIG. 2 is a process diagram showing a method for forming an I-based gold intermetallic compound member.
Claims (1)
合で、Ａｌ又はＡｌ合金の粉末とＦｅ又はＦｅ合金の粉
末とを混合し、この混合物をＦｅ−Ａｌ系金属間化合物
を形成する温度以上でかつ該化合物の固相線以下の温度
で熱処理することを特徴とするＦｅ−Ａｌ系金属間化合
物部材の成形方法。 ２ 前記請求項１のＦｅ−Ａｌ系金属間化合物部材の成
形方法において、前記混合物を真空脱気し、その後緻密
化する処理を行い、更に前記熱処理の温度範囲でかつ２
００気圧以上で加熱焼成することを特徴とするＦｅ−Ａ
ｌ系金属間化合物部材の成形方法。[Claims] 1. Al or Al alloy powder and Fe or Fe alloy powder are mixed in a proportion of 12 to 60% by weight of Al and 40 to 88% by weight, and this mixture is used to form a Fe-Al based intermetallic compound. 1. A method for forming an Fe-Al intermetallic compound member, the method comprising heat-treating at a temperature higher than the temperature at which the Fe-Al intermetallic compound member is formed and lower than the solidus line of the compound. 2. In the method for forming an Fe-Al intermetallic compound member according to claim 1, the mixture is vacuum degassed and then densified, and further within the temperature range of the heat treatment and 2.
Fe-A characterized by heating and firing at 00 atmospheres or more
A method for forming an l-based intermetallic compound member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2134578A JPH0428833A (en) | 1990-05-24 | 1990-05-24 | Method for compacting fe-al series intermetallic compound member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2134578A JPH0428833A (en) | 1990-05-24 | 1990-05-24 | Method for compacting fe-al series intermetallic compound member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0428833A true JPH0428833A (en) | 1992-01-31 |
Family
ID=15131636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2134578A Pending JPH0428833A (en) | 1990-05-24 | 1990-05-24 | Method for compacting fe-al series intermetallic compound member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0428833A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425320C (en) * | 2006-03-14 | 2008-10-15 | 安泰科技股份有限公司 | Method of preparing iron-aluminum based metal compound microporous filter element, and its application |
| JP5665037B2 (en) * | 2007-03-26 | 2015-02-04 | 独立行政法人物質・材料研究機構 | Binary aluminum alloy powder sintered material and method for producing the same |
| CN113584402A (en) * | 2021-08-03 | 2021-11-02 | 西部宝德科技股份有限公司 | Preparation method of iron-aluminum-chromium filtering material |
-
1990
- 1990-05-24 JP JP2134578A patent/JPH0428833A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425320C (en) * | 2006-03-14 | 2008-10-15 | 安泰科技股份有限公司 | Method of preparing iron-aluminum based metal compound microporous filter element, and its application |
| JP5665037B2 (en) * | 2007-03-26 | 2015-02-04 | 独立行政法人物質・材料研究機構 | Binary aluminum alloy powder sintered material and method for producing the same |
| CN113584402A (en) * | 2021-08-03 | 2021-11-02 | 西部宝德科技股份有限公司 | Preparation method of iron-aluminum-chromium filtering material |
| CN113584402B (en) * | 2021-08-03 | 2022-11-08 | 西部宝德科技股份有限公司 | Preparation method of iron-aluminum-chromium filtering material |
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