JPS6386833A - Fiber-reinforced light alloy member - Google Patents
Fiber-reinforced light alloy memberInfo
- Publication number
- JPS6386833A JPS6386833A JP23291786A JP23291786A JPS6386833A JP S6386833 A JPS6386833 A JP S6386833A JP 23291786 A JP23291786 A JP 23291786A JP 23291786 A JP23291786 A JP 23291786A JP S6386833 A JPS6386833 A JP S6386833A
- Authority
- JP
- Japan
- Prior art keywords
- alumina
- fiber
- light alloy
- silica
- alloy 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
- 229910001234 light alloy Inorganic materials 0.000 title claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 52
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 26
- 239000012783 reinforcing fiber Substances 0.000 claims description 20
- 239000002245 particle Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 abstract description 26
- 230000002787 reinforcement Effects 0.000 abstract description 4
- 238000005520 cutting process Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Landscapes
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
Ａ９発明の目的
（１） 産業上の利用分野
本発明は、アルミナ系強化繊維を用いた繊維強化軽合金
部材に関する。DETAILED DESCRIPTION OF THE INVENTION A9 Object of the Invention (1) Industrial Field of Application The present invention relates to a fiber-reinforced light alloy member using alumina-based reinforcing fibers.
（２）従来の技術
従来、軽合金部材の強化繊維として、短繊維状のアルミ
ナ繊維（デュポン社製・Ｆｉｂｅｒ ＦＰ）等のシリカ
を含有していないアルミナ系強化繊維が用いられている
。(2) Prior Art Conventionally, alumina-based reinforcing fibers that do not contain silica, such as short-fiber alumina fibers (manufactured by DuPont, Fiber FP), have been used as reinforcing fibers for light alloy members.
（３）発明が解決しようとする問題点
しかしながら、前記アルミナ系強化繊維は非常に硬く、
しかも脆いという性質を有するため、繊維化が困ｔｌで
あることに起因してコストが高く、またその繊維により
成形体を得る場合に成形性が悪化し、その上部材の切削
加工性が劣るといった問題がある。(3) Problems to be solved by the invention However, the alumina reinforcing fibers are very hard;
Moreover, due to its brittle nature, it is difficult to form fibers, resulting in high costs, and when obtaining a molded product using the fibers, the moldability deteriorates, and furthermore, the machinability of the parts is poor. There's a problem.
そこで前記アルミナ系強化繊維に、その繊維化を容易に
すること等を目的としてシリカを含有させることが考え
られる。Therefore, it is conceivable to incorporate silica into the alumina reinforcing fiber for the purpose of facilitating its fiberization.
この場合、シリカの含有量が多過ぎると、アルミナ系強
化繊維と軽合金マトリックスとの濡れ性が悪化し、部材
の強度向上が妨げられるという問題がある。In this case, if the silica content is too large, the wettability between the alumina-based reinforcing fibers and the light alloy matrix deteriorates, and there is a problem that improvement in the strength of the member is hindered.
また、前記アルミナ系強化繊維の硬さ、脆さ等について
はアルミナのα化率（全アルミナに対するα−アルミナ
の重量％）も大きな要因となり、アルミナのα化率が高
過ぎると、アルミナ系強化繊維が、その硬さが増すため
脆くなり、その繊維を用いて成形体を得る場合に成形性
が悪化するという問題がある。In addition, regarding the hardness, brittleness, etc. of the alumina-based reinforcing fibers, the alumina gelatinization rate (weight% of α-alumina to total alumina) is a major factor, and if the alumina gelatinization rate is too high, the alumina-based reinforcement There is a problem in that the fibers become brittle due to their increased hardness, and when a molded article is obtained using the fibers, the moldability deteriorates.
本発明は前記に鑑み、シリカの含有量およびアルミナの
α化率の上限をそれぞれ特定して繊維強化を十分に達成
し得るようにした前記部材を提供することを目的とする
。In view of the above, an object of the present invention is to provide the above-mentioned member in which the upper limits of the content of silica and the gelatinization rate of alumina are specified, respectively, and fiber reinforcement can be sufficiently achieved.
Ｂ１発明の構成
（１） 問題点を解決するための手段本発明は、シリ
カを含有するアルミナ系強化繊維を用いた繊維強化軽合
金部材であって、前記シリカの含有量を前記アルミナ系
強化繊維に対して２５重量％以下に設定し、またアルミ
ナのα化率を６０％以下に設定したことを特徴とする。B1 Structure of the Invention (1) Means for Solving Problems The present invention provides a fiber-reinforced light alloy member using alumina-based reinforcing fibers containing silica, wherein the silica content is lower than the alumina-based reinforcing fibers. The gelatinization rate of alumina is set to 25% by weight or less, and the gelatinization rate of alumina is set to 60% or less.
（２）作 用
シリカの含有量の上限を前記のように特定すると、アル
ミナ系強化繊維と軽合金マトリックスとの濡れ性が良好
となり、部材の強度を向トさせることができる。ただし
、シリカの含有量が２５重量％を上回ると、前記濡れ性
が悪化し、その上アルミナ系強化繊維がムライト化して
硬さが上昇し、脆くなる。(2) Function When the upper limit of the silica content is specified as described above, the wettability between the alumina reinforcing fiber and the light alloy matrix becomes good, and the strength of the member can be improved. However, if the silica content exceeds 25% by weight, the wettability will deteriorate, and the alumina-based reinforcing fibers will become mullite, resulting in increased hardness and brittleness.
一方、アルミナのα化率の上限を前記のように特定する
と、アルミナ系強化繊維の硬さの上昇を抑制してその脆
化を防止し、これにより成形性を向上させて部材の必要
箇所を適切に強化し、また部材の耐摩耗性を向上させる
と共に切削加工性等の機械加工性を良好にすることがで
きる。ただし、アルミナのα化率が６０％を上回ると、
前記硬さが上昇する。On the other hand, if the upper limit of the alumina gelatinization rate is specified as described above, the increase in the hardness of the alumina-based reinforcing fibers will be suppressed and their embrittlement will be prevented, thereby improving formability and forming the necessary parts of the component. It is possible to appropriately strengthen the material, improve the wear resistance of the member, and improve machinability such as cutting workability. However, if the gelatinization rate of alumina exceeds 60%,
The hardness increases.
（３）実施例
アルミナ系強化繊維として、シリカの含Ｈｉｔおよびア
ルミナのα化率をそれぞれ異にする種々のアルミナ繊維
を用い、各アルミナ繊維より成形体を作成し、この成形
体に、それを２００°Ｃに予熱した状態において、軽合
金として１．６５〜１４．０重量％のＳｉを含有するア
ルミニウム合金を高圧凝固鋳造法の適用下で充填複合し
、種々のテストピースを鋳造する。この場合、各テスト
ピースの繊維体積率Ｖｆは１２％に設定される。(3) Examples Various alumina fibers with different Hit content of silica and gelatinization rate of alumina were used as the alumina-based reinforcing fibers, molded bodies were created from each alumina fiber, and the fibers were added to the molded bodies. In a state preheated to 200°C, an aluminum alloy containing 1.65 to 14.0% by weight of Si as a light alloy is filled and composited using a high-pressure solidification casting method, and various test pieces are cast. In this case, the fiber volume fraction Vf of each test piece is set to 12%.
第１関は各テストピースにおけるシリカの含有量と引張
強さとの関係を示し、線ａはアルミナのα化率が５％の
場合、線すはアルミナのα化率が５０％の場合、ｐｃは
アルミナのα化率が８５％の場合にそれぞれ８亥当する
。The first curve shows the relationship between the silica content and tensile strength in each test piece. When the gelatinization rate of alumina is 85%, each corresponds to 8.
線ａ、ｂに示すようにシリカの含有量が２５重量％以下
で、且つアルミナのα化率が６０％以下であれば、実用
上十分な強度を有する部材を提供することができる。な
お、シリカの含有量は好ましくは２〜５重世％である。As shown by lines a and b, if the silica content is 25% by weight or less and the alumina gelatinization rate is 60% or less, a member having practically sufficient strength can be provided. In addition, the content of silica is preferably 2 to 5%.
シリカの含有量が２重量％を下回ると、シリカ含をの効
果が僅少となり、アルミナ繊維がｎ危（なる。When the silica content is less than 2% by weight, the effect of silica content becomes slight and the alumina fiber becomes dangerous.
第２図はシリカの含有量が５重量％の各テストピースに
おけるアルミナのα化率と引張強さとの関係を示し、ア
ルミナのα化率が６０％以下であれば実用上十分な強度
を有する部材を提供することができる。なお、アルミナ
のα化率は好ましくは４５％以下である。Figure 2 shows the relationship between the gelatinization rate of alumina and tensile strength for each test piece with a silica content of 5% by weight.If the gelatinization rate of alumina is 60% or less, the strength is sufficient for practical use. members can be provided. Note that the gelatinization rate of alumina is preferably 45% or less.
本発明のように、シリカの含有量およびアルミナのα化
率の上限をそれぞれ前記のように特定することにより、
部材の強度を、従来のものに比べて、繊維体積率１２％
にて８〜２０％向上させることができる。As in the present invention, by specifying the upper limits of the silica content and the alumina gelatinization rate as described above,
The strength of the component has been increased by 12% in fiber volume percentage compared to conventional ones.
can be improved by 8 to 20%.
前記アルミナ繊維には、その製造上、繊維化されていな
い粒状物、即ち、ショットが必然的に含まれているもの
で、そのショットの粒径および含有量によって部材、特
に摺動部材の強度、摺動特性等が左右される。The alumina fiber inevitably contains unfiberized particulate matter, that is, shot, due to its manufacture, and the strength of the member, especially the sliding member, depends on the particle size and content of the shot. Sliding characteristics etc. are affected.
本発明者等は種々検討を加えた結果、粒径が１５０μｍ
以上のショットの含有量が、アルミナ繊維（ショット含
有）に対して２．５重量％以下であれば前記強度等に悪
影響を与えないことを究明している。As a result of various studies, the inventors found that the particle size was 150 μm.
It has been found that if the content of the above shot is 2.5% by weight or less based on the alumina fiber (containing shot), it does not adversely affect the strength etc.
第３図は粒径１５０μｍ以上のショットの含有量と引張
強さとの関係を示し、また第４図は前記ショットの含有
量と焼付限界面圧との関係を示す。FIG. 3 shows the relationship between the content of shot having a grain size of 150 μm or more and tensile strength, and FIG. 4 shows the relationship between the content of shot and the seizure limit surface pressure.
第３．第４図の各テストピースにおいて、シリカの含有
量は４重量％、アルミナのα化率は３０〜４０％および
繊維体積率は１２％である。Third. In each test piece shown in FIG. 4, the silica content is 4% by weight, the alumina gelatinization rate is 30-40%, and the fiber volume percentage is 12%.
第３．第４図から明らかなように、前記ショットの含有
量が２．５重量％以下であれば、実用上十分な強度およ
び摺動特性を有する部材を提供することができる。Third. As is clear from FIG. 4, when the shot content is 2.5% by weight or less, a member having practically sufficient strength and sliding properties can be provided.
摺動特性向上の目的で、アルミナ繊維に、潤滑能を有す
る炭素繊維を混入することは有効な手段である。この場
合、炭素繊維の繊維体積率は０．３〜２０％、好ましく
は９〜１２％である。炭素繊維の繊維体積率が２０％を
上回ると、アルミナ繊維との関係で総繊維体積率が高く
なり、その混合繊維の成形性が悪化し、一方、０．３％
を下回ると潤滑効果が僅少となる。For the purpose of improving sliding properties, it is an effective means to mix carbon fibers with lubricating ability into alumina fibers. In this case, the fiber volume fraction of the carbon fibers is 0.3 to 20%, preferably 9 to 12%. When the fiber volume fraction of carbon fiber exceeds 20%, the total fiber volume fraction increases due to the relationship with alumina fiber, and the formability of the mixed fiber deteriorates;
Below this, the lubrication effect will be minimal.
前記アルミナ系強化繊維において、シリカの含有量Ａと
α−アルミナの含有量（アルミナ系強化繊維に対するα
−アルミナの重量％）Ｂとの和は下記のように特定され
る。In the alumina reinforcing fibers, the silica content A and the α-alumina content (α for alumina reinforcing fibers)
- weight % of alumina) The sum with B is specified as follows.
２重量％≦Ａ＋Ｂ≦７０重量％
この場合、Ａ＋Ｂが２重量％を下回ると、シリカによる
繊維化の容易性といった効果が得られず、また部材の耐
摩耗性が低下する。一方、Ａ＋Ｂが７０重寸％を上回る
と、シリカに起因したムライト化および高α化率化に伴
い繊維が跪くなる。2% by weight≦A+B≦70% by weight In this case, if A+B is less than 2% by weight, effects such as ease of fiberization due to silica cannot be obtained, and the wear resistance of the member decreases. On the other hand, when A+B exceeds 70% by weight, the fibers become mullite due to silica and become high in α-ization rate.
マトリックスとしては、前記のようなアルミニウム合金
の外にマグネシウム合金の使用も可能である。As the matrix, it is also possible to use a magnesium alloy in addition to the above-mentioned aluminum alloy.
本発明は各種機械構造部材、例えば摺動部材としての、
シリンダポア凹りを繊維強化したシリンダブロック、ク
ランクピン孔口りを繊維強化したコンロフト、スリッパ
面およびその近傍を繊維強化したロッカアーム、弁座を
繊維強化したシリンダヘッド、各種軸受部材等に適用さ
れる。またスプリングリテーナ等にも適用可能である。The present invention is applicable to various mechanical structural members, such as sliding members.
It is applied to cylinder blocks with fiber-reinforced cylinder pore recesses, conlofts with fiber-reinforced crank pin holes, rocker arms with fiber-reinforced slipper surfaces and their vicinity, cylinder heads with fiber-reinforced valve seats, and various bearing members. It is also applicable to spring retainers and the like.
Ｃ９発明の効果
本発明によれば、アルミナ系強化繊維におけるシリカの
含有量およびアルミナのα化率をそれぞれ前記のように
特定することにより、優れた強度および耐Ｉγ耗性を有
し、また必要箇所を適切に強化し、その上切削加工性等
の機械加工性の良好な軽合金部材を提供することができ
る。C9 Effects of the Invention According to the present invention, by specifying the silica content and the alumina gelatinization rate in the alumina-based reinforcing fibers as described above, it has excellent strength and Iγ abrasion resistance, and also has excellent strength and Iγ wear resistance. It is possible to provide a light alloy member that is appropriately strengthened at locations and has good machinability such as cutting workability.
第１図はシリカの含有量と引張強さとの関係を示すグラ
フ、第２図はアルミナのα化率と引張強さとの関係を示
すグラフ、第３図はショットの含有量と引張強さとの関
係を示すグラフ、第４回はショットの含有量と焼付限界
面圧との関係を示すグラフである。Figure 1 is a graph showing the relationship between silica content and tensile strength, Figure 2 is a graph showing the relationship between alumina gelatinization rate and tensile strength, and Figure 3 is a graph showing the relationship between shot content and tensile strength. The fourth graph showing the relationship is a graph showing the relationship between shot content and seizure limit surface pressure.
Claims (2)
繊維強化軽合金部材であって、前記シリカの含有量を前
記アルミナ系強化繊維に対して２５重量％以下に設定し
、またアルミナのα化率を６０％以下に設定したことを
特徴とする繊維強化軽合金部材。(1) A fiber-reinforced light alloy member using alumina-based reinforcing fibers containing silica, in which the content of the silica is set to 25% by weight or less with respect to the alumina-based reinforcing fibers, and the alumina is pregelatinized. A fiber-reinforced light alloy member characterized in that the ratio is set to 60% or less.
おり、該ショットのうち、粒径１５０μｍ以上のショッ
トの含有量を前記ショットを含有するアルミナ系強化繊
維に対して２．５重量％以下に設定した、特許請求の範
囲第（１）項記載の繊維強化軽合金部材。(2) The alumina reinforcing fiber contains shot, and the content of shot with a particle size of 150 μm or more is 2.5% by weight or less with respect to the alumina reinforcing fiber containing the shot. A fiber-reinforced light alloy member according to claim (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23291786A JPS6386833A (en) | 1986-09-30 | 1986-09-30 | Fiber-reinforced light alloy member |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23291786A JPS6386833A (en) | 1986-09-30 | 1986-09-30 | Fiber-reinforced light alloy member |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6386833A true JPS6386833A (en) | 1988-04-18 |
Family
ID=16946863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23291786A Pending JPS6386833A (en) | 1986-09-30 | 1986-09-30 | Fiber-reinforced light alloy member |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6386833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10869413B2 (en) * | 2014-07-04 | 2020-12-15 | Denka Company Limited | Heat-dissipating component and method for manufacturing same |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848648A (en) * | 1981-09-07 | 1983-03-22 | Toyota Motor Corp | Composite metallic material containing ceramic fiber |
| JPS5893839A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Combination of member |
| JPS5893840A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Combination of member |
| JPS5893841A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Fiber reinforced metal type composite material |
| JPS61169154A (en) * | 1985-01-21 | 1986-07-30 | Toyota Motor Corp | Fiber reinforced composite metallic material |
-
1986
- 1986-09-30 JP JP23291786A patent/JPS6386833A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5848648A (en) * | 1981-09-07 | 1983-03-22 | Toyota Motor Corp | Composite metallic material containing ceramic fiber |
| JPS5893839A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Combination of member |
| JPS5893840A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Combination of member |
| JPS5893841A (en) * | 1981-11-30 | 1983-06-03 | Toyota Motor Corp | Fiber reinforced metal type composite material |
| JPS61169154A (en) * | 1985-01-21 | 1986-07-30 | Toyota Motor Corp | Fiber reinforced composite metallic material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10869413B2 (en) * | 2014-07-04 | 2020-12-15 | Denka Company Limited | Heat-dissipating component and method for manufacturing same |
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