JPH0413822A - Production of partially composite member - Google Patents
Production of partially composite memberInfo
- Publication number
- JPH0413822A JPH0413822A JP11487190A JP11487190A JPH0413822A JP H0413822 A JPH0413822 A JP H0413822A JP 11487190 A JP11487190 A JP 11487190A JP 11487190 A JP11487190 A JP 11487190A JP H0413822 A JPH0413822 A JP H0413822A
- Authority
- JP
- Japan
- Prior art keywords
- base material
- alloy
- composite
- composite base
- thin
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims abstract description 36
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 14
- 239000010409 thin film Substances 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 10
- 238000005245 sintering Methods 0.000 abstract description 3
- 229910045601 alloy Inorganic materials 0.000 description 28
- 239000000956 alloy Substances 0.000 description 28
- 239000011159 matrix material Substances 0.000 description 17
- 239000002184 metal Substances 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
- 238000000576 coating method Methods 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000010408 film Substances 0.000 description 5
- 230000003014 reinforcing effect Effects 0.000 description 4
- 241001272720 Medialuna californiensis Species 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- FFRBMBIXVSCUFS-UHFFFAOYSA-N 2,4-dinitro-1-naphthol Chemical compound C1=CC=C2C(O)=C([N+]([O-])=O)C=C([N+]([O-])=O)C2=C1 FFRBMBIXVSCUFS-UHFFFAOYSA-N 0.000 description 1
- 229910001020 Au alloy Inorganic materials 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003353 gold alloy Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008240 homogeneous mixture Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000007751 thermal spraying Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 238000007738 vacuum evaporation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C2204/00—End product comprising different layers, coatings or parts of cermet
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、Ａ１合金の所定部位をＳｉＣウィスカーによ
り強化する部分的複合部材の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for manufacturing a partial composite member in which predetermined portions of an A1 alloy are reinforced with SiC whiskers.
内ｅｍ関のピストン、ロンカーアーム、コンロッド等を
軽量のへ！合金で構成し、過酷な熱衝撃または摺動を受
ける部位を局部的にＳｉＣウィスカーで強化する手段と
して、ＳｉＣウィスカーのプリフォームを鋳型の所定箇
所にセットしてＡｆｆｉ合金の溶湯を加圧鋳造する方法
が知られている（例えば特開昭５５−２４７６３号公報
、同５５−２４９４５号公報）。ところが、ＳｉＣウィ
スカーのプリフォームは極めて脆弱な集合体であるため
、加圧鋳造の段階で往々にして変形、破壊等を招く欠点
がある。このため、プリフォームの強化法に関する研究
も盛んにおこなわれているが十分に満足するものは得ら
れていない。Make inner em pistons, long arm arms, connecting rods, etc. lightweight! As a means of locally reinforcing areas made of alloy that are subjected to severe thermal shock or sliding with SiC whiskers, SiC whisker preforms are set in predetermined locations in a mold and molten Affi alloy is pressure cast. Methods are known (for example, JP-A-55-24763 and JP-A-55-24945). However, since the SiC whisker preform is an extremely fragile aggregate, it often suffers from deformation, destruction, etc. during the pressure casting stage. For this reason, research on methods for strengthening preforms has been actively conducted, but none has been found to be fully satisfactory.
更に、ＳｉＣウィスカーの表層部には製造時の熱処理な
どの過程で若干の０２もしくはＳｉＯ□等が介在するが
、これら酸化性成分の存在はＳｉＣウィスカー中のＳｔ
とマトリックスとなるＡ１合金中に含有されるＭｇとの
選択的な反応を促進し、複合欠陥の原因となるＭｇｚＳ
ｉなどの偏析部分を析出する。この現象は、通常、マト
リックスとしてＡＣ８Ａ、ＡＣ４Ｃ，ＡＣ４Ｄ等の鋳造
用あるいは２６１８．２０２４．５０５２．６０６１の
ような展伸材などＭｇを含むＡｆｆｉ合金類合金相され
ている関係で重大な障害となる。Furthermore, a small amount of 02 or SiO
MgzS promotes selective reaction with Mg contained in the matrix A1 alloy, causing complex defects.
Segregated parts such as i are precipitated. This phenomenon is usually a serious problem when the matrix is a Mg-containing Affi alloy, such as casting materials such as AC8A, AC4C, and AC4D, or wrought materials such as 2618.2024.5052.6061. .
上記の偏析防止に対しては、予め表層部に介在するＳｉ
Ｏ□成分を除去したＳｉＣウィスカープリフォームを用
いてＡ１合金の溶湯を加圧鋳造する方法（特公昭６２−
４０４０９号公報）が有効な手段となるが、この方法に
よる場合にはプリフォーム自体の強化は図れない難点が
ある。To prevent the above-mentioned segregation, it is necessary to
A method of pressure casting a molten A1 alloy using a SiC whisker preform from which the O□ component has been removed
40409) is an effective means, but this method has the disadvantage that the preform itself cannot be strengthened.
また、予めＳｉＣウィスカーとＡｆｆｉ合金とによる所
定形状の予備複合体を形成しておき、これを鋳型の所定
箇所にセットしたのちＡ２合金の溶湯で詩句する部分的
複合方法も考えられる。しかしながら、この場合には予
備複合体を形成する過程あるいは詩句時の予熱段階等で
酸化により表面にＡｌｚＯｙが生成し、この酸化膜がマ
トリックスＡ２合金との濡れ性を著しく阻害して界面の
接合強度を減退させる結果を招来する。Alternatively, a partial composite method may be considered in which a pre-composite of a predetermined shape is formed from SiC whiskers and Affi alloy in advance, this is set at a predetermined location in a mold, and then a poem is performed using molten A2 alloy. However, in this case, AlzOy is generated on the surface due to oxidation during the process of forming the precomposite or the preheating stage during poetry, and this oxide film significantly inhibits the wettability with the matrix A2 alloy and reduces the bonding strength of the interface. resulting in a decline in
〔発明が解決しようとする課題］
本発明者らは、Ａ２合金の所定部位をＳｉＣウィスカー
により部分的に複合強化する際に障害となる上記の問題
点を解消する目的で鋭意研究を重ねた結果、ＳｉＣウィ
スカーとＡＩ！、合金粉末により予め形成した焼結複合
体の表面に特定厚さのＡｌ薄膜を被着し、これを強化部
分にセットしてＡｌ溶湯を詩句するプロセスをとること
が効果的であることを確認して本発明の開発に至った。[Problems to be Solved by the Invention] The present inventors have conducted extensive research with the aim of solving the above-mentioned problems that are an obstacle when partially reinforcing predetermined parts of A2 alloy with SiC whiskers. , SiC whisker and AI! It was confirmed that it is effective to apply a thin Al film of a specific thickness to the surface of a sintered composite preformed with alloy powder, set it on the reinforced part, and use the process of making molten Al into a poem. This led to the development of the present invention.
繊維強化複合材料を形成する場合、強化繊維の表面に金
属物質を蒸着した繊維成形体を用いて加圧鋳造すること
により複合体の耐摩耗性と自己潤滑性を改善する方法（
特開昭５８−９３８４３号公報）は知られているが、Ｓ
ｉＣウィスカーのような微小短繊維に均質薄膜の金属被
覆を形成することは容易ではなく、また被覆する金属は
減摩性を有するＰｂ、Ｚｎ、Ｓｎ、Ｃｕ等であるから、
本発明とは趣旨を異にするものである。When forming a fiber-reinforced composite material, there is a method for improving the wear resistance and self-lubricating properties of the composite material by pressure casting using a fiber molded body in which a metal substance is vapor-deposited on the surface of the reinforcing fibers (
JP-A No. 58-93843) is known, but S
It is not easy to form a homogeneous thin metal coating on micro short fibers such as iC whiskers, and the coating metal is Pb, Zn, Sn, Cu, etc., which have anti-friction properties.
This is different in purpose from the present invention.
すなわち、本発明による部分的複合部材の製造方法は、
ＳｉＣウィスカーとＡｌ合金粉末の混合物を所定の形状
に焼結して複合母材を作製し、該複合母材の表面に厚さ
０．５〜２０μｍのＡｎ薄膜を形成して鋳型の所定箇所
にセットしたのちＡＰ金合金溶湯で詩句することを構成
上の特徴とする。That is, the method for manufacturing a partially composite member according to the present invention is as follows:
A composite base material is produced by sintering a mixture of SiC whiskers and Al alloy powder into a predetermined shape, and an An thin film with a thickness of 0.5 to 20 μm is formed on the surface of the composite base material at a predetermined location of the mold. The unique feature of the structure is that after setting it, a poem is written using the molten AP gold alloy.
強化材となるＳｉＣウィスカーには、直径０゜１〜５μ
ｍ、長さ３０〜１００μｍのアスペクト性状を有する針
状単結晶が用いられる。SiC whiskers, which serve as reinforcing materials, have a diameter of 0°1 to 5μ.
A needle-like single crystal having an aspect property of 30 to 100 μm in length is used.
本発明において強化部分を構成するための複合母材は、
ＳｉＣウィスカーとＡ２合金粉末とを湿式混合し、この
混合物を真空もしくは不活性雰囲気中でホットプレス、
ＨＩＰ等を用いて所定の形状に焼結することにより作製
される。用いるＡｆｆｉ合金粉末は後工程で詩句するマ
トリックスＡｆｆｉ合金と同一のものとし、またＳｉＣ
うイスカーとＡ１合金粉末の混合比率は、複合母材に占
めるＳｉＣウィスカーの■ｆが１０〜５０％範囲の所望
値になるように設定する。In the present invention, the composite base material for constructing the reinforcing part is:
Wet mix SiC whiskers and A2 alloy powder, hot press the mixture in vacuum or inert atmosphere,
It is manufactured by sintering into a predetermined shape using HIP or the like. The Affi alloy powder used is the same as the matrix Affi alloy used in the subsequent process, and the SiC
The mixing ratio of the whiskers and the A1 alloy powder is set so that f of the SiC whiskers in the composite base material is a desired value in the range of 10 to 50%.
ついで、複合母材の表面にＡｎの薄膜を形成する。薄膜
形成する／ｌの材質はＡ２含有率が９９％を越す純Ａｎ
とし、例えばイオンブレーティング、真空蒸着、溶射な
どの被覆手段を用いて被膜形成する。被膜の厚さは０．
５〜２０μｍの範囲に調整することが重要で、０．５μ
ｍ未満では酸化防止機能が不足し、他方２０μｍを越え
る場合には後工程の詩句の過程で複合母材の表面にＡ１
層が残存し、詩句するＡ１合金との接合を減退させる原
因となる。Next, a thin film of An is formed on the surface of the composite base material. The material for forming a thin film is pure An with an A2 content of over 99%.
Then, a coating is formed using a coating method such as ion blasting, vacuum evaporation, or thermal spraying. The thickness of the coating is 0.
It is important to adjust to a range of 5 to 20 μm, and 0.5 μm
If it is less than 20 μm, the antioxidant function will be insufficient, and if it exceeds 20 μm, A1 will be applied to the surface of the composite base material during the post-processing process.
This layer remains and causes a decline in bonding with the A1 alloy.
Ａｆの表面薄膜を形成した複合母材は鋳型の強化部位に
相当する所定箇所にセットし、Ａｆｆｉ合金の溶湯を加
圧鋳造法によって鋳込む。この際、複合母材をその固相
線より−２０〜−１００°Ｃの範囲に予熱し、Ａｆｆｉ
合金の溶湯温度をその液相温度より５０°Ｃ以上高い条
件にすることが好ましい。The composite base material on which a thin film of Af has been formed is set at a predetermined location corresponding to the reinforced region of the mold, and molten Affi alloy is cast by pressure casting. At this time, the composite base material is preheated to a range of -20 to -100°C from its solidus line, and Affi
It is preferable to set the temperature of the molten metal of the alloy to 50° C. or more higher than its liquidus temperature.
複合母材の予熱温度が固相線−２０″Ｃを土建ると材料
変形を生じ、またこれが固相線−１００’Ｃ未満もしく
はＡｌ溶湯温度が液相温度＋５０°Ｃを上廻る場合には
溶湯冷却は急速に進行して接合不良を起こす現象が発生
する。鋳造時の圧力は２５０〜３０００ ｋｇ／ｃｍ２
の範囲に設定することが望ましい。この理由は、２５０
ｋｇ／ｃｍ２未満の加圧力では複合母材とマトリック
スＡＩ！、合金の界面接合力が不十分となり、３０００
ｋｇ／ｃｍ２を越えると材料変形を起こすからである
。If the preheating temperature of the composite base material reaches the solidus line -20'C, material deformation will occur, and if this is less than the solidus line -100'C or the Al molten metal temperature exceeds the liquidus temperature +50°C, The cooling of the molten metal progresses rapidly, leading to poor bonding.The pressure during casting is 250 to 3000 kg/cm2.
It is desirable to set it within the range of . The reason for this is 250
At pressures less than kg/cm2, composite matrix and matrix AI! , the interfacial bonding strength of the alloy becomes insufficient, and 3000
This is because if it exceeds kg/cm2, material deformation will occur.
このようにして、特定された箇所にＳｉＣウィスカー強
化部位を備えるＡ１合金系の部分的複合部材が製造され
る。In this way, an A1 alloy-based partial composite member having SiC whisker reinforced regions at the specified locations is manufactured.
本発明によれば、予めＳｉＣウィスカーとＡｌ合金粉末
とを焼結した複合母材の表面にＡｌ２薄膜を被覆して強
化部分を形成するが、Ａｌは蒸気圧が高いため緻密で均
質な薄い被膜を短時間内に形成することができる。形成
されたＡ２薄膜は、溶湯詩句の段階で複合母材表面のＳ
ｉＣウィスカーや、ＭｇまたはＣｕを含むＡ１合金成分
の酸化層が形成される現象を有効に防止するために機能
する。According to the present invention, a reinforcing portion is formed by coating a thin Al2 film on the surface of a composite base material in which SiC whiskers and Al alloy powder are sintered in advance, but since Al has a high vapor pressure, a dense and homogeneous thin film is formed. can be formed within a short time. The formed A2 thin film is S on the surface of the composite base material at the molten metal poetry stage.
It functions to effectively prevent the formation of iC whiskers and oxidized layers of A1 alloy components containing Mg or Cu.
詩句時、Ａｆｆｉ薄膜の大部分はマトリックスＡ１合金
の溶湯に分散し、微量のＡＩ！、成分についても熱処理
による合金元素の拡散によりマトリックスと同質の成分
に転化する。During poetry, most of the Affi thin film is dispersed in the molten matrix A1 alloy, and a trace amount of AI! , the components are also converted into components of the same quality as the matrix due to the diffusion of alloying elements through heat treatment.
上記の作用によって、複合母材とマトリックスＡｌ合金
との界面が強固に接合した一体構造の部分的複合形態が
発現する。Due to the above action, a partially composite form with an integral structure in which the interface between the composite base material and the matrix Al alloy is firmly bonded is developed.
以下に本発明を実施例に基づいて説明する。 The present invention will be explained below based on examples.
実施例１
平均直径０．５μｍ、平均長さ２０ＩＩｍのＳｉＣウィ
スカーと粒度２５０メツシユ以下のＡ １ 合金粉末（
ＡＣ８Ａ）とを水に攪拌分散し、濾過、乾燥してＳｉＣ
ウィスカーのＶｆが１５％の均一混合物を得た。この混
合物をホットプレスにより温度６００°Ｃ１真空度５
Ｘ ｌ ０−５Ｔｏｒｒ、圧力１０００ｋｇ／ｃｍ２、
加圧時間２０分の条件で焼結して厚さ５０ｍｍ、直径８
０ｍｍの円盤状複合母材を作製した。Example 1 SiC whiskers with an average diameter of 0.5 μm and an average length of 20 II m and A 1 alloy powder with a particle size of 250 mesh or less (
AC8A) is stirred and dispersed in water, filtered, and dried to form SiC.
A homogeneous mixture with a whisker Vf of 15% was obtained. This mixture was hot pressed at a temperature of 600°C and a vacuum level of 5.
X l 0-5 Torr, pressure 1000 kg/cm2,
Sintered under pressure time of 20 minutes to a thickness of 50 mm and a diameter of 8
A 0 mm disc-shaped composite base material was produced.
上記の複合母材を中心部から切断して半月形状とし、そ
の切断面に純度９９．５％のＡｌ２を１゜０μｍの薄膜
状態に真空蒸着した。The above composite base material was cut from the center into a half-moon shape, and Al2 with a purity of 99.5% was vacuum-deposited on the cut surface to form a thin film of 1.0 .mu.m.
Ａｆｆｉｌ膜を形成した複合母材を直径８０ｍｍの鋳型
に半月状にセットし、Ａｒ中で５００°Ｃに予熱して加
圧鋳造機に設置した。ついで、７００°Ｃの温度に保持
されたマトリックスＡ１合金（ＡＣ８Ａ）溶湯を鋳型に
注湯し、５００ ｋｇ／ｃｍ２の圧力を付与しながら加
圧鋳造した。The composite base material on which the Affil film was formed was set in a half-moon shape in a mold with a diameter of 80 mm, preheated to 500°C in Ar, and placed in a pressure casting machine. Next, molten matrix A1 alloy (AC8A) maintained at a temperature of 700°C was poured into a mold, and pressure casting was performed while applying a pressure of 500 kg/cm2.
得られた部分的複合材は、複合母材の切断面を介して半
月状のマトリックスＡｌ合金が接合した形態を有するも
のであった。The obtained partial composite material had a shape in which a half-moon-shaped matrix Al alloy was joined through the cut surface of the composite base material.
この部分的複合材について接合面に対し直角方向に試片
を切り出し、Ｔ６処理後に引張り強さを測定したところ
３５ｋｇｆ／ｍｍ”であり、破断箇所はマトリックス部
分であった。A specimen was cut out from this partial composite material in a direction perpendicular to the joint surface, and the tensile strength was measured after T6 treatment, and it was found to be 35 kgf/mm'', and the fracture location was the matrix portion.
実施例２
複合母材の表面に厚さ３μｍのＡｌ薄膜を形成したほか
は実施例１と同一条件により部分的複合材を製造した。Example 2 A partial composite material was manufactured under the same conditions as in Example 1 except that a 3 μm thick Al thin film was formed on the surface of the composite base material.
。
このもの番ごつき実施例１に準じて引張り強さを測定し
たところ３２ ｋｇｆ／ｍｍ”で、破断箇所はマトリッ
クス部分であった。. The tensile strength of this material was measured in accordance with Example 1 and found to be 32 kgf/mm'', with the fracture occurring at the matrix portion.
実施例３
マトリックスＡ１合金の溶湯温度を８００ ’Ｃに変え
たほかは実施例１と同一条件により部分的複合材を製造
した。Example 3 A partial composite material was manufactured under the same conditions as in Example 1, except that the temperature of the molten metal of matrix A1 alloy was changed to 800'C.
得られた部分的複合材につき実施例１に準じて引張り強
さを測定したところ３６ ｋｇｆ／ｍｍ”であり、破断
箇所はマトリックス部分であった。The tensile strength of the resulting partial composite material was measured in accordance with Example 1 and found to be 36 kgf/mm'', and the fracture location was the matrix portion.
比較例１
実施例１と同一の複合母材を用い、切断面になんの被覆
も施さずに実施例１と同一条件でマトリックスＡ１合金
を加圧鋳造した。Comparative Example 1 Using the same composite base material as in Example 1, a matrix A1 alloy was pressure cast under the same conditions as in Example 1 without any coating on the cut surface.
このものにつき実施例１に準じて引張り強さを測定した
ところ５ ｋｇｆ／ｍｍ２であった。この場合の破断は
接合界面で起き、破断界面にＡＰ合金酸化による黄金色
部が認められた。The tensile strength of this product was measured according to Example 1 and found to be 5 kgf/mm2. In this case, the fracture occurred at the bonding interface, and a golden yellow area due to AP alloy oxidation was observed at the fracture interface.
比較例２
複合母材の表面に厚さ０．３μｍのＡｌ薄膜を形成し、
その他の条件は実施例１と同一にして部分的複合部材を
製造した。Comparative Example 2 A thin Al film with a thickness of 0.3 μm was formed on the surface of the composite base material,
Other conditions were the same as in Example 1 to produce a partial composite member.
このものにつき実施例１に準じて引張り強さを測定した
ところ８ ｋｇｆ／ｎ＋ｍ”であった。また、この場合
の破断箇所は比較例１と同様に接合界面であり、破断面
にはＥＰＭＡＯ線測定により多量のｏ２が確認された。The tensile strength of this product was measured in accordance with Example 1 and was found to be 8 kgf/n+m''.The fracture location in this case was at the joint interface as in Comparative Example 1, and the fracture surface had an EPMAO wire. The measurement confirmed a large amount of o2.
比較例３
複合母材の表面に厚さ５０μｍのＡｌ薄膜を形成し、そ
の他の条件は実施例１と同一にして部分的複合部材を製
造した。Comparative Example 3 A partial composite member was manufactured by forming a 50 μm thick Al thin film on the surface of the composite base material and using the same conditions as in Example 1 except for the above conditions.
このものにつき実施例１に準じて引張り強さを測定した
ところ８ ｋｇｆ／ｍｍ”と低い値であった。また、破
断は接合界面で起きており、界面には膜形成したＡｆｆ
ｉ層が点在していた。When the tensile strength of this product was measured according to Example 1, it was as low as 8 kgf/mm.Furthermore, the fracture occurred at the bonding interface, and the Aff
I-layers were scattered.
比較例４
実施例１と同一のＳｉＣウィスカーを用いて濾過形成法
により直径８０ｍｍ、高さ３０ｍｍ、Ｖｆ１５％のプリ
フォームを作製し、これを中心部から２分割に切断した
。この半月状プリフォームを加圧鋳造機にセットし、実
施例１と同一の条件により部分的複合部材を製造した。Comparative Example 4 A preform having a diameter of 80 mm, a height of 30 mm, and a Vf of 15% was produced by a filtration method using the same SiC whiskers as in Example 1, and the preform was cut into two parts from the center. This half-moon-shaped preform was set in a pressure casting machine, and a partial composite member was manufactured under the same conditions as in Example 1.
このものにつき実施例１に準じて引張り強さを測定した
ところ１５ｋｇｆ／ｍｍ””ａ低位にあり、プリフォー
ム割れに基づく複合部分の破断が認められた。When the tensile strength of this product was measured according to Example 1, it was found to be at a low level of 15 kgf/mm''a, and fracture of the composite portion due to preform cracking was observed.
以上のとおり、本発明に従えば強化部分が強固な焼結体
からなる複合母材によって構成されるから、プリフォー
ム成形体のようにプロセスの段階で外力を受けて変形、
破壊を生じることは全くない。このため、肉厚が薄く複
雑形状の強化部分でも容易に成形することが可能となる
。また、複合母材の表面を安価かつ被覆性の良好なＡＩ
！、により薄膜形成しているためＡ／４２０３などの酸
化物介在に伴うトラブルは有効に解消され、常にマトリ
ックスＡ１合金との間に良好な界面接合が得られる。As described above, according to the present invention, since the reinforced part is composed of a composite base material made of a strong sintered body, it deforms when subjected to external force during the process like a preform molded body.
No destruction occurs at all. Therefore, it is possible to easily mold even a reinforced part with a thin wall thickness and a complicated shape. In addition, the surface of the composite base material is coated with AI, which is inexpensive and has good coverage.
! Since the thin film is formed by , troubles associated with the presence of oxides such as A/4203 are effectively eliminated, and good interfacial bonding with the matrix A1 alloy is always obtained.
したがって、比較的簡単な製造工程により強靭な一体構
造の部分的複合部材を製造することができるから、例え
ばピストンベツドのような過酷な熱衝撃、摩擦等を受け
る部位に局部的なＳｉＣウィスカー強化組織を形成する
ケースに極めて有用である。Therefore, it is possible to manufacture a partial composite member with a strong integral structure through a relatively simple manufacturing process, so that localized SiC whisker reinforcement structures can be formed in areas that are subject to severe thermal shock, friction, etc., such as piston beds. It is extremely useful in cases where
出願人 東海カーボン株式会社 代理人 弁理士 高 畑 正 也Applicant: Tokai Carbon Co., Ltd. Agent: Patent Attorney Masaya Takahata
Claims (1)
形状に焼結して複合母材を作製し、該複合母材の表面に
厚さ０．５〜２０μｍのＡｌ薄膜を形成して鋳型の所定
箇所にセットしたのちＡｌ合金の溶湯で鋳包することを
特徴とする部分的複合部材の製造方法。1. A mixture of SiC whiskers and Al alloy powder is sintered into a predetermined shape to produce a composite base material, and an Al thin film with a thickness of 0.5 to 20 μm is formed on the surface of the composite base material to form a mold in a predetermined shape. A method for manufacturing a partial composite member, which comprises setting the part in place and then casting it with molten Al alloy.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11487190A JPH0636984B2 (en) | 1990-04-27 | 1990-04-27 | Method for manufacturing partial composite member |
| DE19914112693 DE4112693A1 (en) | 1990-04-27 | 1991-04-18 | Mfr. of locally reinforced aluminium alloy composite material - by mixing silicon carbide whiskers with alloy powder, sintering then partially coating with thin aluminium film etc. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11487190A JPH0636984B2 (en) | 1990-04-27 | 1990-04-27 | Method for manufacturing partial composite member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0413822A true JPH0413822A (en) | 1992-01-17 |
| JPH0636984B2 JPH0636984B2 (en) | 1994-05-18 |
Family
ID=14648775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11487190A Expired - Lifetime JPH0636984B2 (en) | 1990-04-27 | 1990-04-27 | Method for manufacturing partial composite member |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0636984B2 (en) |
| DE (1) | DE4112693A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289698A (en) * | 2014-09-15 | 2015-01-21 | 江苏大学 | Method for preparing Al/Cu composite material |
| CN107138708A (en) * | 2017-04-13 | 2017-09-08 | 中北大学 | Integrated die forging process |
| CN110078529A (en) * | 2019-05-30 | 2019-08-02 | 西安创正新材料有限公司 | A kind of silicon carbide whisker reinforced aluminum matrix composites and preparation method thereof |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4328619C2 (en) * | 1993-08-26 | 1995-08-10 | Peak Werkstoff Gmbh | Partially reinforced cast aluminum component and process for its production |
| US5803153A (en) * | 1994-05-19 | 1998-09-08 | Rohatgi; Pradeep K. | Nonferrous cast metal matrix composites |
| KR960031023A (en) * | 1995-02-22 | 1996-09-17 | 와다 요시히로 | METHOD FOR MANUFACTURING PARTIAL COMPOSITE REINFORCED LIGHT-ALLOY PARTS AND PRE-MOLDED FABRICATED THEREFOR |
| DE19621264B4 (en) * | 1996-05-25 | 2005-09-15 | Mahle Gmbh | Method for producing a cylinder liner |
| DE19710671C2 (en) | 1997-03-14 | 1999-08-05 | Daimler Chrysler Ag | Method for producing a component and use of a component produced in this way |
| DE19712624C2 (en) * | 1997-03-26 | 1999-11-04 | Vaw Motor Gmbh | Aluminum matrix composite and process for its manufacture |
| WO2001040674A1 (en) | 1999-12-01 | 2001-06-07 | Nils Claussen | Method for producing metal-ceramic brake discs |
| US9375783B2 (en) * | 2010-06-04 | 2016-06-28 | Triton Systems, Inc. | Discontinuous short fiber preform and fiber-reinforced aluminum billet and methods of manufacturing the same |
| CN112517884A (en) * | 2020-11-29 | 2021-03-19 | 苏州金瑞阳模具有限公司 | Extrusion casting method of aluminum alloy auxiliary frame |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6296627A (en) * | 1985-10-22 | 1987-05-06 | Mitsubishi Chem Ind Ltd | Production of fiber reinforced composite metallic material |
| DE3719121A1 (en) * | 1987-06-06 | 1988-12-15 | Mahle Gmbh | Method for the production of an aluminium piston with fibre-reinforced areas for internal combustion engines |
-
1990
- 1990-04-27 JP JP11487190A patent/JPH0636984B2/en not_active Expired - Lifetime
-
1991
- 1991-04-18 DE DE19914112693 patent/DE4112693A1/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104289698A (en) * | 2014-09-15 | 2015-01-21 | 江苏大学 | Method for preparing Al/Cu composite material |
| CN107138708A (en) * | 2017-04-13 | 2017-09-08 | 中北大学 | Integrated die forging process |
| CN110078529A (en) * | 2019-05-30 | 2019-08-02 | 西安创正新材料有限公司 | A kind of silicon carbide whisker reinforced aluminum matrix composites and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4112693A1 (en) | 1991-11-07 |
| JPH0636984B2 (en) | 1994-05-18 |
| DE4112693C2 (en) | 1993-09-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU601955B2 (en) | Fibre-reinforced metal matrix composites | |
| CA1325706C (en) | Process for obtaining a metallurgical bond between a metal material, or a composite material having a metal matrix, and a metal casting or a metal-alloy casting | |
| US5043182A (en) | Method for the producing of ceramic-metal composite materials by plasma spraying several layers of ceramic particles onto a base body and infiltrating molten metal into the pores of the ceramic material | |
| US20030133821A1 (en) | Manufacture of lightweight metal matrix composites with controlled structure | |
| JPH0413822A (en) | Production of partially composite member | |
| DE102011012142B3 (en) | Aluminum matrix composite, semi-finished aluminum matrix composite material and process for its production | |
| WO1992017302A1 (en) | Rotor made of aluminum alloy for oil pump and method of manufacturing said rotor | |
| US6187260B1 (en) | Aluminum metal matrix composite materials reinforced by intermetallic compounds and alumina whiskers | |
| US4899800A (en) | Metal matrix composite with coated reinforcing preform | |
| JPH0625386B2 (en) | Method for producing aluminum alloy powder and sintered body thereof | |
| JP2849710B2 (en) | Powder forming method of titanium alloy | |
| JPH03151158A (en) | Manufacture of partial composite member | |
| EP0890560A1 (en) | Ceramic-metal or metal-ceramic composites | |
| JP3173665B2 (en) | Composite member and method of manufacturing the same | |
| KR0180104B1 (en) | Method of manufacturing aluminum alloy composite materials | |
| JPH03155449A (en) | Manufacture of partially composite member | |
| JPH01230738A (en) | Aluminum alloy composite material | |
| JPH0533079A (en) | Production of partial composite member | |
| JPH01279720A (en) | Manufacture of metal-based composite material | |
| JPH07278714A (en) | Aluminum powder alloy and its production | |
| JPH05131264A (en) | Production of aluminum partial composite member | |
| JP3102582B2 (en) | Manufacturing method of composite member | |
| JPH03234354A (en) | Manufacture of partial composite member | |
| JPH08267217A (en) | Porous reinforced sintered body and its manufacture, and composite material using it and its manufacture | |
| JPH04154927A (en) | Manufacture of partially reinforced frm material |