JPH03100138A - High strength and heat resistant al alloy material - Google Patents
High strength and heat resistant al alloy materialInfo
- Publication number
- JPH03100138A JPH03100138A JP1238835A JP23883589A JPH03100138A JP H03100138 A JPH03100138 A JP H03100138A JP 1238835 A JP1238835 A JP 1238835A JP 23883589 A JP23883589 A JP 23883589A JP H03100138 A JPH03100138 A JP H03100138A
- Authority
- JP
- Japan
- Prior art keywords
- alloy
- high strength
- rapidly solidified
- crystallized
- strength
- 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
- 239000000956 alloy Substances 0.000 title claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 7
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 16
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 6
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 5
- 229910052742 iron Inorganic materials 0.000 claims abstract description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 3
- 229910052802 copper Inorganic materials 0.000 claims abstract 2
- 229910052749 magnesium Inorganic materials 0.000 claims abstract 2
- 229910052759 nickel Inorganic materials 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 8
- 239000010419 fine particle Substances 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 description 10
- 229910045601 alloy Inorganic materials 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 239000006104 solid solution Substances 0.000 description 4
- 238000005242 forging Methods 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000005496 eutectics Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- ZJIRFPOFCZNBAC-UHFFFAOYSA-N 4-amino-2-(2-amino-2-carboxyethyl)sulfanylbutanoic acid Chemical compound NCCC(C(O)=O)SCC(N)C(O)=O ZJIRFPOFCZNBAC-UHFFFAOYSA-N 0.000 description 1
- 108010020212 4-amino-2-(S-cysteinyl)butyric acid Proteins 0.000 description 1
- 229910002482 Cu–Ni Inorganic materials 0.000 description 1
- 238000003483 aging Methods 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009692 water atomization Methods 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） 本発明は高Ｓｉ耐熱性Ｍ合金材の改良に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to improvements in high-Si heat-resistant M alloy materials.
（従来の技術と課題）
軽量エンジン用ピストンの材質として、従来、高Ｓｉ系
の耐熱性高硬度Ｍ合金材であるＡＣ８Ａ、 ＡＣ９Ｂ等
が使用されている。(Prior Art and Problems) AC8A, AC9B, etc., which are high Si-based heat-resistant and high-hardness M alloy materials, have been used as materials for pistons for lightweight engines.
しかしながら、かかる材質は、コンロッド、ロッカーア
ーム、スプロケット等の材質としては、耐熱性が過大で
ある一方、高温強度が不足するという問題がある。However, such materials have a problem in that they have excessive heat resistance and insufficient high temperature strength as materials for connecting rods, rocker arms, sprockets, and the like.
尚、２０００系、 ７０００系Ｍ合金は、常温強度には
優れるものの、高温における強度や硬度が期待できない
。Note that although the 2000 series and 7000 series M alloys have excellent strength at room temperature, their strength and hardness at high temperatures cannot be expected.
本発明はかかる問題に鑑みなされたもので、１５０°Ｃ
〜２５０°Ｃ程度の高温における高強度と高硬度とを兼
備したＭ合金材を提供することを目的とする。The present invention was made in view of this problem, and it
The object of the present invention is to provide an M alloy material that has both high strength and high hardness at high temperatures of about ~250°C.
（課題を解決するための手段）
上記目的を達成するためになされた本発明のＭ合金材は
、化学組成が重量％で、
Ｓｉ： ６ 〜１３％ Ｆｅ： ５ 〜１０％Ｍｏ
： ０．５〜３．０％ Ｃｅ ： ０．３〜５．０
％Ｃｕ＋Ｎｉ＋Ｍｇ ：各々０．５〜１．５％残部実質
的にＡｌからなるＡｌ合金急冷凝固粉末の押出材もしく
は鍛造材であって、晶出Ｓｉおよび金属間化合物が細粒
状に均一分散していることを発明の構成とするものであ
る。(Means for Solving the Problems) The M alloy material of the present invention made to achieve the above object has the following chemical composition in weight%: Si: 6 to 13% Fe: 5 to 10% Mo
: 0.5~3.0% Ce: 0.3~5.0
%Cu+Ni+Mg: 0.5 to 1.5% each An extruded or forged material of rapidly solidified Al alloy powder consisting essentially of Al, in which crystallized Si and intermetallic compounds are uniformly dispersed in fine particles. This is the structure of the invention.
（作 用）
本発明の高力耐熱性Ｍ合金材の化学組成（単位−１％）
は、以下の理由により限定される。(Function) Chemical composition of the high strength heat resistant M alloy material of the present invention (unit -1%)
is limited for the following reasons.
Ｓｉ：６〜１３％
ＳｔはＭ中に固溶し、また晶出するＳｔにより耐熱性、
硬度の向上に寄与する。６％未満ではこれらの効果が不
足し、一方１３％を越えると晶出Ｓｉが過多となり、材
質の脆化、成形加工性の低下を招来する。Si: 6-13% St dissolves in M, and crystallized St improves heat resistance,
Contributes to improving hardness. If it is less than 6%, these effects will be insufficient, while if it exceeds 13%, there will be too much crystallized Si, leading to embrittlement of the material and deterioration of moldability.
Ｆｅ：５〜１０％
ＦｅはＭ中に固溶すると共に、過剰なＦｅが金属間化合
物として基地中に微細に分散生成し、基地の強化および
硬度向上に資する。５％未満ではかかる効果が小さく、
一方１０％を越えると成形加工が困難となる。Fe: 5 to 10% Fe is dissolved in M as a solid solution, and excessive Fe is finely dispersed in the base as an intermetallic compound, contributing to strengthening the base and improving hardness. If it is less than 5%, this effect is small;
On the other hand, if it exceeds 10%, molding becomes difficult.
Ｍｏ ： ０．５〜３．０％
Ｃｅ ： ０．３〜５．０％
これらの元素はＦｅと同様、Ｍに固溶し、金属間化合物
として基地中に析出し、強度および硬度向上に寄与する
。Ｍｏ ０．５％未満、 Ｃｅ Ｏ，３％未満では効果
が不足する。一方、Ｍｏ ３．０％を越え、 Ｃｅ ５
．０％を越えると成形加工が困難となる。Mo: 0.5-3.0% Ce: 0.3-5.0% Similar to Fe, these elements dissolve in M, precipitate in the matrix as intermetallic compounds, and contribute to improving strength and hardness. do. If Mo is less than 0.5% and Ce O is less than 3%, the effect will be insufficient. On the other hand, Mo exceeds 3.0%, Ce 5
．． If it exceeds 0%, molding becomes difficult.
Ｃｕ、ＮｉｌＭｇ：各々０．５〜１．５％これらの元素
はＭ中に固溶し、またＡＩ −Ｃｕ−Ｎｉ、ＡＩ −Ｃ
ｕ−Ｍｇ等の金属間化合物となって析出し、基地の強化
に寄与する。０．５％未満では効果が不足し、１．５％
を越えると靭性が低下する。Cu, NiMg: 0.5 to 1.5% each These elements are dissolved in solid solution in M, and also in AI-Cu-Ni, AI-C
It precipitates as an intermetallic compound such as u-Mg and contributes to strengthening the base. If it is less than 0.5%, the effect is insufficient, and 1.5%
Exceeding this decreases toughness.
上記組成のＭ合金急冷凝固粉末は、合金元素を過飽和に
固溶して基地を固溶体強化することができ、また、靭性
や強度劣化の原因となる初晶Ｓｉの晶出がほとんど見ら
れず、基地中に微細な共晶状Ｓｔが晶出したものとなる
。尚、冷却速度はｌＯ４°Ｃ／Ｏ４上とするのがよい。The M alloy rapidly solidified powder with the above composition can strengthen the matrix by supersaturated solid solution of alloying elements, and almost no crystallization of primary Si, which causes deterioration of toughness and strength, is observed. The result is fine eutectic St crystallized in the matrix. Note that the cooling rate is preferably 1O4°C/O4 or higher.
前記Ｍ合金急冷凝固粉末の押出材もしくは鍛造材は、同
加工による強度のせん新作用によって、粉末表面に形成
されている数ｎｍ程度の不活性、安定なＭ酸化物被膜の
分断や基地中の晶出Ｓｉや析出金属間化合物の分断が行
われ、これらが基地中に均一に分散され、耐熱性、耐摩
耗性および高温強度の向上が図られる。The extruded material or forged material of the rapidly solidified M alloy powder is produced by breaking the inert and stable M oxide film of several nanometers formed on the powder surface and by breaking the inert and stable M oxide film formed on the powder surface due to the strength renewal effect caused by the same processing. Crystallized Si and precipitated intermetallic compounds are separated, and these are uniformly dispersed in the matrix, thereby improving heat resistance, wear resistance, and high-temperature strength.
（実施例）
本発明のＭ合金材の原料となる所定成分のＭ合金急冷凝
固粉末は、水アトマイズ法や回転ドラム法等の適宜の手
段で製造される。回転ドラム法とは、回転する冷却ドラ
ムの内周面に冷却水層を遠心力の作用で形成し、該冷却
水層に溶融Ｍ合金を噴射し、微細に分断して急冷凝固粉
末を得る方法である。(Example) A rapidly solidified M alloy powder having a predetermined composition, which is a raw material for the M alloy material of the present invention, is produced by an appropriate method such as a water atomization method or a rotating drum method. The rotating drum method is a method in which a cooling water layer is formed on the inner circumferential surface of a rotating cooling drum by the action of centrifugal force, and molten M alloy is injected into the cooling water layer and finely divided to obtain rapidly solidified powder. It is.
Ｍ合金急冷凝固粉末は、粉末の状態で、あるいは圧縮成
形ビレットとして押出しコンテナに収容され、押出し加
工に供される。押出に際して、ＡＩ合金粉末表面のＭ酸
化物被膜やＭ固溶体中の共晶Ｓｔの分断、分散を十分行
うために、押出比は５〜２０（望ましくは１０〜２０）
とするのがよく、また押出荷重の軽減および基地の拡散
接合のために、押出温度は４００〜５００°Ｃとするの
がよい。The M alloy rapidly solidified powder is stored in an extrusion container in a powder state or as a compression molded billet, and is subjected to extrusion processing. During extrusion, the extrusion ratio is 5 to 20 (preferably 10 to 20) in order to sufficiently divide and disperse the M oxide film on the surface of the AI alloy powder and the eutectic St in the M solid solution.
The extrusion temperature is preferably 400 to 500°C in order to reduce the extrusion load and to diffusion bond the base.
本発明の合金材は、押出し加工のほか鍛造加工により押
出し加工時と同等の作用がなされ、所期の合金組織を得
ることができ、この際、鍛造温度は３５０〜５００°Ｃ
とするのがよい。The alloy material of the present invention can be subjected to forging in addition to extrusion to obtain the same effect as extrusion, and the desired alloy structure can be obtained at a forging temperature of 350 to 500°C.
It is better to
以上のようにして得られた押出材もしくは鍛造材は、適
宜、鍛造加工、切削加工等により目的とする製品形状に
加工される。また、必要に応じてＴ６処理（４６０〜５
２０°Ｃで溶体化処理後、水冷し、１７０〜１８０°Ｃ
で１０時間以上保持して時効硬化を行う。）を施し、よ
り高強度化を図ることができる。The extruded material or forged material obtained as described above is processed into the desired product shape by forging, cutting, etc., as appropriate. In addition, T6 processing (460 to 5
After solution treatment at 20°C, cooled with water and heated to 170-180°C.
Age hardening is performed by holding for 10 hours or more. ), it is possible to achieve even higher strength.
次に具体的実施例について説明する。Next, specific examples will be described.
（１） 下記第１表の化学組成（ｗｔ％、残部実質的
にＡＩ）のＭ合金を溶製し、回転ドラム法によって、粒
径０．０５〜ＩＩＩＩＩ１１の急冷凝固粉末を作成した
。尚、試料隘１〜４は本発明実施例であり、Ｎα５およ
び６は２０１７． ＡＣＢＡ相当組成の比較例である。(1) An M alloy having the chemical composition shown in Table 1 below (wt%, the balance being substantially AI) was melted, and a rapidly solidified powder with a particle size of 0.05 to III11 was created by a rotating drum method. Note that sample numbers 1 to 4 are examples of the present invention, and Nα5 and 6 are samples of 2017. This is a comparative example of a composition equivalent to ACBA.
（以下成葉）
（２）Ｎα１〜６の急冷凝固粉末を押出比１８、押出温
度４５０°Ｃで押出し、φ２５鵬の棒材を得た。(hereinafter referred to as "adult leaf") (2) A rapidly solidified powder having Nα of 1 to 6 was extruded at an extrusion ratio of 18 and an extrusion temperature of 450°C to obtain a bar with a diameter of 25 mm.
（３） この押出材より試験片を採取し、第１表の通
り熱処理を施した後、常温及び１８０’Ｃにおける強度
および常温硬度を測定した。その結果を第１表に併せて
示す。(3) Test pieces were taken from this extruded material and heat treated as shown in Table 1, and then the strength and hardness at room temperature and at 180'C were measured. The results are also shown in Table 1.
同表より、実施例は、比較例に比べて高Ｓｉであっても
強度および特に硬度が高い。また、熱処理を施さなくて
も、両者共良好であることが知られる。From the same table, the Examples have higher strength and especially hardness than the Comparative Examples even though they have high Si. Furthermore, it is known that both are good even without heat treatment.
（発明の効果）
以上説明した通り、本発明のＭ合金材は、Ｆｅを５〜１
０％含有した特定高りｔ組成の急冷凝固粉末の押出材も
しくは鍛造材であり、晶出Ｓｉや析出金属間化合物の細
粒が基地中に均一分散したものであるから、良好な耐熱
性を備え、高温における強度と硬度とが兼備したものと
なり、耐摩耗性も良好であ、す、耐熱軽量高強度材とし
て優れた特性を有する。(Effect of the invention) As explained above, the M alloy material of the present invention contains 5 to 1 Fe.
It is an extruded material or a forged material of rapidly solidified powder with a specific high t composition containing 0%, and has good heat resistance because fine grains of crystallized Si and precipitated intermetallic compounds are uniformly dispersed in the matrix. It has both strength and hardness at high temperatures, has good wear resistance, and has excellent properties as a heat-resistant, lightweight, and high-strength material.
Claims (1)
Ｎｉ，Ｍｇ：各々０．５〜１．５％ 残部実質的にＡｌからなるＡｌ合金急冷凝固粉末の押出
材もしくは鍛造材であって、晶出Ｓｉおよび金属間化合
物が細粒状に均一分散していることを特徴とする高力耐
熱性Ａｌ合金材。(1) Chemical composition in weight%: Si: 6-13% Fe: 5-10% Mo: 0.5-3.0% Ce: 0.3-5.0% Cu,
Ni, Mg: 0.5 to 1.5% each The balance is an extruded or forged material of rapidly solidified Al alloy powder consisting essentially of Al, in which crystallized Si and intermetallic compounds are uniformly dispersed in fine particles. High strength and heat resistant Al alloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1238835A JPH03100138A (en) | 1989-09-14 | 1989-09-14 | High strength and heat resistant al alloy material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1238835A JPH03100138A (en) | 1989-09-14 | 1989-09-14 | High strength and heat resistant al alloy material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03100138A true JPH03100138A (en) | 1991-04-25 |
Family
ID=17035983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1238835A Pending JPH03100138A (en) | 1989-09-14 | 1989-09-14 | High strength and heat resistant al alloy material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03100138A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008541148A (en) * | 2005-05-06 | 2008-11-20 | ディカパク カンパニー，リミテッド | Waterproof case for digital camera |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6283444A (en) * | 1985-10-04 | 1987-04-16 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | Heat and wear resistant aluminum alloy |
-
1989
- 1989-09-14 JP JP1238835A patent/JPH03100138A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6283444A (en) * | 1985-10-04 | 1987-04-16 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | Heat and wear resistant aluminum alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008541148A (en) * | 2005-05-06 | 2008-11-20 | ディカパク カンパニー，リミテッド | Waterproof case for digital camera |
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