JPS61166931A - Method for molding al-si alloy powder - Google Patents
Method for molding al-si alloy powderInfo
- Publication number
- JPS61166931A JPS61166931A JP60004906A JP490685A JPS61166931A JP S61166931 A JPS61166931 A JP S61166931A JP 60004906 A JP60004906 A JP 60004906A JP 490685 A JP490685 A JP 490685A JP S61166931 A JPS61166931 A JP S61166931A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- alloy
- time
- temp
- molded
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 25
- 229910021364 Al-Si alloy Inorganic materials 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 title claims description 18
- 238000000465 moulding Methods 0.000 title claims description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 239000011856 silicon-based particle Substances 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 229910018125 Al-Si Inorganic materials 0.000 claims description 3
- 229910018520 Al—Si Inorganic materials 0.000 claims description 3
- 239000011863 silicon-based powder Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract 2
- 230000008023 solidification Effects 0.000 abstract 2
- 238000007711 solidification Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 7
- 238000009849 vacuum degassing Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 238000007712 rapid solidification Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910000676 Si alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005507 spraying 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
この発明は、Ａｌ−Ｓｉ系粉末合金の成形方法、特に急
冷凝固粉末冶金を利用したＡ１−Ｓｉ系合金の耐摩耗性
を更に改善した粉末合金の成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for forming an Al-Si powder alloy, particularly a powder alloy that further improves the wear resistance of an Al-Si alloy using rapid solidification powder metallurgy. Regarding the molding method.
従来の技術
内燃機関のシリンダーブロック、シリンダーライナ、シ
リンダースリーブ、ピストンや動弁部品（バルブリフタ
ー、バルブスプリングリティナー、バルブシートリング
、ロッカーアーム等）、自動車のシンクロナイザリング
、コンプレッサーのベーン、ＶＴＲシリンダなどにおい
ては摺動部における耐摩耗性、低熱膨張性、耐熱性など
の特性が必要とされる。Conventional technology Internal combustion engine cylinder blocks, cylinder liners, cylinder sleeves, pistons and valve train parts (valve lifters, valve spring retainers, valve seat rings, rocker arms, etc.), automobile synchronizer rings, compressor vanes, VTR cylinders, etc. In this case, properties such as wear resistance, low thermal expansion, and heat resistance are required in sliding parts.
これらの特性を有する合金として過共晶Ａ＋−Ｓｉ合金
が提案されているが、この合金の場合Ｓｉが多くなると
耐摩耗性は向上するが、Ｓｉ粒子径が大きくなるために
切削性、加工性等が劣る。A hypereutectic A+-Si alloy has been proposed as an alloy with these properties.In this alloy, the wear resistance improves as the Si content increases, but the machinability and workability increase due to the increased Si particle size. etc. are inferior.
これを解決するために合金中にＰを添加してＳｉ粒子の
細粒化をはかつても３０〜４０μｍ・以下にすることが
できず、上記問題を解決していなかった。In order to solve this problem, it has not been possible to refine the Si particles to 30 to 40 μm or less by adding P to the alloy, and the above problem has not been solved.
発明が解決しようとする問題点
最近、急冷凝固法によった粉末合金が用いられているが
、この粉末を常法によって成形すると初晶Ｓｉの粒子径
が小さいために＃４１１！耗性がやや劣るのが問題であ
った。Problems to be Solved by the Invention Recently, powder alloys produced by the rapid solidification method have been used, but when this powder is molded by a conventional method, the particle size of the primary Si crystals is small, resulting in #411! The problem was that the abrasion resistance was somewhat poor.
問題点を解決するための手段
結局、耐摩耗性を優れたものとするには、Ｓｉ粒子の平
均径を５〜１５μｍ、最大径を１０〜３０μｍとする必
要があることを見出し、この発明は、粉末合金を用いて
、Ｓｉの粒子径をある程度大きくするような加熱方法を
見出したものである。すなわち、Ａｌ−Ｓｉ系合金粉末
を成形する場合に、Ａｌ−Ｓｉ系合金を下記の式、すな
わら、
Ｔ ＋ ４０ ｆｏｏｔ≧５２０・・・・・・・・・
・・・・・・・・・（１）（ただし、Ｔ：温度°Ｃ，ｔ
：時間１−１ｒ）を満たす温度（ただし固相線未満の
温度）お・よび時間、すなわち第１図に示す条件で加熱
することを包含する工程によって、Ｓｉ粒子の平均粒径
を５〜１５μｍ、最大径を１０〜３０μｍにするＡｌ−
Ｓｉ系粉末合金の成形方法である。Means for Solving the Problems In the end, it was discovered that in order to achieve excellent wear resistance, the average diameter of Si particles should be 5 to 15 μm and the maximum diameter should be 10 to 30 μm. , discovered a heating method that uses a powder alloy to increase the particle size of Si to a certain extent. That is, when molding an Al-Si alloy powder, the Al-Si alloy is expressed by the following formula, that is, T + 40 foot≧520...
・・・・・・・・・(1) (T: temperature °C, t
The average particle diameter of the Si particles is reduced to 5 to 15 μm by a process including heating at a temperature (but below the solidus line) and a time satisfying (time 1-1r), that is, under the conditions shown in FIG. , Al- with a maximum diameter of 10 to 30 μm
This is a method for forming a Si-based powder alloy.
粉末冶金法では通常、次のような工程で成形される。In the powder metallurgy method, molding is usually performed in the following steps.
（△）粉末の製造−冷間圧縮−焼結
（Ｂ）粉末の製造−冷間圧縮一缶封入一真空脱ガスーＨ
Ｉ Ｐ （Ｈｏｔ Ｉ ｓｏｓｔａｔｉｃｐｒｅｓｓ
ｉｎｇ＞
（、Ｃ，）粉末の製造−缶封入一真空脱ガスーＩＰ
（Ｄ）粉末の製造−冷間圧縮一缶封入一真空脱ガスー押
出
（Ｅ）粉末の製造−冷間圧縮一缶封入一真空脱ガスーホ
ットブレスー脱缶−押出（または鍛造、圧延）。(△) Manufacture of powder - cold compression - sintering (B) Manufacture of powder - cold compression - 1 can, 1 vacuum degassing - H
I P (Hot I sostaticpress
ing> (, C,) Production of powder - can encapsulation - vacuum degassing - IP (D) Powder production - cold compression - 1 can inclusion - vacuum degassing - extrusion (E) Powder production - cold compression - 1 can inclusion - Vacuum degassing - hot breath decanning - extrusion (or forging, rolling).
これらのいずれかの工程で、この発明は材料を上記の（
１）式の条件で加熱し、Ｓｉ粒子を成長させて平均粒径
を５〜１５μｍ、最大径を１０〜３０μｍとする。In any of these steps, the present invention converts the material into the above (
1) Heat under the conditions of formula to grow Si particles to have an average particle diameter of 5 to 15 μm and a maximum diameter of 10 to 30 μm.
これに対して、上記（１）式を満足しない条件で加熱処
理を行なうと８１粒子の成長が十分ではなく、耐摩耗性
が改善されない。On the other hand, if the heat treatment is performed under conditions that do not satisfy the above formula (1), the growth of the 81 particles will not be sufficient and the wear resistance will not be improved.
また融点（固相線）以上の温度に加熱するとＳｉ粒子が
大きくなりすぎるので、この発明では温度を固相線未満
にする必要がある。Furthermore, if heated to a temperature above the melting point (solidus line), the Si particles become too large, so in this invention it is necessary to keep the temperature below the solidus line.
なお、加熱時間は上記＋１３式に従うものであるが、経
済性の理由から最大１００Ｈｒ程度にするのが通常であ
る。The heating time is determined according to the above formula +13, but for economical reasons, it is usually set to a maximum of about 100 hours.
上記加熱処理は原料粉末または冷間圧縮物に対して行な
ってもよく、また、焼結、真空脱ガス、ＨＩＰ、押出、
ホットプレス等の工程で加熱する際に所定の上記条件に
あう加熱処理を行なってもよい。The above heat treatment may be performed on the raw material powder or cold compressed product, and may also be applied to sintering, vacuum degassing, HIP, extrusion,
When heating in a process such as hot pressing, a heat treatment that meets the above predetermined conditions may be performed.
更に、成形体にしてから加熱処理をしてもよく、成形体
の熱処理（溶体化処理）の際に行ってもよい。・
なお、粉末またはその冷間圧縮物について加熱処理を行
う場合は、粉末表面の酸化を避けるために非酸化性雰囲
気で行うことが望ましい。Furthermore, the heat treatment may be performed after forming the molded product, or it may be performed during the heat treatment (solution treatment) of the molded product. - When heat-treating the powder or its cold-compressed product, it is desirable to perform the heat treatment in a non-oxidizing atmosphere to avoid oxidation of the powder surface.
この発明の成形方法に適する合金は、過共晶Ａｌ−Ｓｉ
系合金であり、−８１を１５〜３５重量％含むものであ
る。更に時効硬化性を付与するためのＣｕ、Ｍｇ、ｚｎ
など、耐熱性を付与するためのＦｅ 、Ｍｎ 、Ｎｉな
どを含んでもさしつかえない。The alloy suitable for the forming method of this invention is hypereutectic Al-Si
It is a type alloy containing 15 to 35% by weight of -81. Cu, Mg, zn to further impart age hardenability
It may also contain Fe, Mn, Ni, etc. to impart heat resistance.
急冷凝固法による粉末製造方法としては、通常、アトマ
イズ法、ロール法（シングルロール法、ツインロール法
）、オよびこれらを組合せたアトマイズロール法、遠心
噴霧法などが用いられる。As a powder manufacturing method using the rapid solidification method, the atomizing method, the roll method (single roll method, twin roll method), the atomizing roll method, a combination thereof, the centrifugal spraying method, etc. are usually used.
実施例
以下、実施例およびそれに対する比較例によって、この
発明を具体的に説明する。EXAMPLES The present invention will be specifically explained below using examples and comparative examples.
実施例１
ＡＩ −２０Ｓｉ −２，５Ｃｕ −＋ＭＯ合金のアト
イズ粉末を用い、上記（Ａ）の工程により成形した。Example 1 Atoize powder of AI-20Si-2,5Cu-+MO alloy was used and molded according to the step (A) above.
焼結条件を（１）式に従って５４０℃、１）−１ｒとし
た例では添付図面筒２−ａ図に示すように、Ｓｉ粒子の
平均径は５．８μｍ、最大径＋５ｕｍとなる。In an example in which the sintering conditions were set to 540° C. and 1)-1r according to equation (1), the average diameter of the Si particles was 5.8 μm and the maximum diameter + 5 μm, as shown in Figure 2-a of the attached drawing.
比較例１
実施例１と同じ原料を同じ工程により成形した。ただし
焼結条件は５００℃、１）−１ｒにした。Comparative Example 1 The same raw materials as in Example 1 were molded by the same process. However, the sintering conditions were 500°C and 1)-1r.
その結果は第２−ｂ図に示すように８１の平均径は１．
８μｍ、最大径は８．５μｍであり、小さすぎる状態で
あった。As a result, as shown in Figure 2-b, the average diameter of 81 is 1.
The diameter was 8 μm, and the maximum diameter was 8.5 μm, which was too small.
実施例２
ＡＩ −２５Ｓｉ −３Ｃｕ −０，５Ｍａ −２μＩ
−ｌＦｅ −２Ｎｉ合金のアトマイズ粉末を上記（Ｂ）
の工程により成形した。その際、真空脱ガスを（１）式
に合うように、５００℃、１０）−１ｒ行なったときに
は第３−ａ図に示すように、成形物の８１粒子の平均径
は５．３μｍ、最大径は１５μｍになった。Example 2 AI-25Si-3Cu-0,5Ma-2μI
-lFe -2Ni alloy atomized powder (B)
It was molded using the following process. At that time, when vacuum degassing was performed at 500°C and 10)-1r to match equation (1), the average diameter of the 81 particles of the molded product was 5.3 μm, and the maximum The diameter was 15 μm.
比較例２
上記実施例２の方法において、真空脱ガス処理の際の熱
処理条件を５００℃、２Ｈｒ行なったときは、第３−１
１図に示すようにＳｉ粒子の平均径は２．３μｍ、最大
径は９．６μｍであった。Comparative Example 2 In the method of Example 2 above, when the heat treatment conditions for vacuum degassing treatment were 500°C and 2 hours, 3-1
As shown in Figure 1, the average diameter of the Si particles was 2.3 μm, and the maximum diameter was 9.6 μm.
実施例３
ＡＩ −３０Ｓｉ −０，５μＩ −４Ｆｅ合金のロー
ル法によるフレークを用い、上記（Ｄ）の工程により成
形体をつくった。Example 3 A molded body was made using the roll method flakes of AI-30Si-0,5μI-4Fe alloy according to the step (D) above.
成形後４７５℃で５０Ｈｒ加熱処理をしたところ、第４
−ａ図に示すように、平均径は９．４μＩ、最大径は２
０μｍとなった。After molding, heat treatment was performed at 475°C for 50 hours.
As shown in figure -a, the average diameter is 9.4μI, and the maximum diameter is 2
It became 0 μm.
比較例３
上記実施例３の方法において、成形後に上記加熱処理を
行なわないときは、第４−１１図に示すように８１粒子
の平均径は２．４μｍ、最大径９．４μｍであった。Comparative Example 3 In the method of Example 3, when the heat treatment was not performed after molding, the average diameter of the 81 particles was 2.4 μm and the maximum diameter was 9.4 μm, as shown in FIG. 4-11.
発明の効果
この発明の方法によれば、急冷凝固粉末を用いて成形し
たＡｌ−＄１系合金の耐摩耗性を改善し、かつ、加工性
、被切削性が浸れた材料を得ることができる。Effects of the Invention According to the method of the present invention, it is possible to improve the wear resistance of an Al-$1 alloy molded using rapidly solidified powder, and to obtain a material with excellent workability and machinability. .
第１図はこの発明における加熱処理条件を示す温度、保
持時間の関係を示すグラフ、第２−ａ図は実施例１の成
形体の金属組織を示す顕微鏡写真、
第２−ｂ図は比較例１の成形体の金属組織を示す顕微鏡
写真、
第３−ａ図は実施例２の成形体の金属組織を示す顕微鏡
写真、
第３−ｂ図は比較例２の成形体の金属組織を示す顕微鏡
写真、
第４−ａ図は実施例３の成形体の金属組織を示す顕微鏡
写真、
第４−ｂ図は比較例３の成形体の金属組織を示す顕微鏡
写真である。
特許出願人 住友軽金属工業株式会社
代理人 弁理士 小 松 秀 岳
代理人 弁理士 旭 宏
才 １ 図
保持時ｆｍ（Ｈｒ）Fig. 1 is a graph showing the relationship between temperature and holding time showing the heat treatment conditions in this invention, Fig. 2-a is a micrograph showing the metallographic structure of the compact of Example 1, and Fig. 2-b is a comparative example. Figure 3-a is a micrograph showing the metal structure of the molded body of Example 2; Figure 3-b is a microscope picture showing the metal structure of the molded body of Comparative Example 2. Figure 4-a is a photomicrograph showing the metallographic structure of the molded product of Example 3, and Figure 4-b is a photomicrograph showing the metallographic structure of the molded product of Comparative Example 3. Patent Applicant Sumitomo Light Metal Industries Co., Ltd. Agent Patent Attorney Hide Komatsu Agent Patent Attorney Kosai Asahi 1 fm (Hr) when holding figure
Claims (1)
し、Ｔ：温度℃、ｔ：時間Ｈｒ） を満たす温度（ただし固相線未満の温度）および時間で
加熱することを包含する工程によって、Ｓｉ粒子の平均
粒径を５〜１５μｍ、最大径を１０〜３０μｍにするこ
とを特徴とするＡｌ−Ｓｉ系粉末合金の成形方法。[Claims] When molding an Al-Si alloy powder, the Al-Si alloy is heated to a temperature that satisfies T+40logt≧520 (T: temperature °C, t: time Hr) (but below the solidus line). A method for forming an Al-Si powder alloy, characterized in that the average particle diameter of Si particles is 5 to 15 μm and the maximum diameter is 10 to 30 μm by a step including heating at a temperature of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60004906A JPS61166931A (en) | 1985-01-17 | 1985-01-17 | Method for molding al-si alloy powder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60004906A JPS61166931A (en) | 1985-01-17 | 1985-01-17 | Method for molding al-si alloy powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61166931A true JPS61166931A (en) | 1986-07-28 |
| JPH0121213B2 JPH0121213B2 (en) | 1989-04-20 |
Family
ID=11596688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60004906A Granted JPS61166931A (en) | 1985-01-17 | 1985-01-17 | Method for molding al-si alloy powder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61166931A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61186444A (en) * | 1985-02-12 | 1986-08-20 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | High strength, heat and wear resistant al alloy |
| JPS61186443A (en) * | 1985-02-12 | 1986-08-20 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | High strength, heat and wear resistant al alloy |
| JPS6210237A (en) * | 1985-07-09 | 1987-01-19 | Showa Denko Kk | Aluminum alloy for hot forging |
| JPS62199703A (en) * | 1986-02-26 | 1987-09-03 | Sumitomo Light Metal Ind Ltd | Hot hydrostatic compression molding method for al-si powder alloy |
| JPS6342344A (en) * | 1986-08-06 | 1988-02-23 | Honda Motor Co Ltd | Al alloy for powder metallurgy excellent in high temperature strength characteristic |
| JPS63219554A (en) * | 1987-03-07 | 1988-09-13 | Mazda Motor Corp | Production of al-si alloy member having excellent wear resistance |
| JPH01132734A (en) * | 1987-02-10 | 1989-05-25 | Sumitomo Light Metal Ind Ltd | Aluminum alloy for vane material |
| DE4014865A1 (en) * | 1989-05-10 | 1990-11-15 | Mazda Motor | METHOD FOR PRODUCING A WEAR-RESISTANT ALUMINUM ALLOY PART |
| EP0589137A1 (en) * | 1992-09-29 | 1994-03-30 | Mazda Motor Corporation | Wear resistant sliding member and method of manufacturing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5597447A (en) * | 1979-01-19 | 1980-07-24 | Sumitomo Electric Ind Ltd | Aluminum sintered alloy and production of the same |
| JPS5959856A (en) * | 1982-09-28 | 1984-04-05 | Showa Denko Kk | High strength powder moldings of aluminum alloy having excellent lubricity, resistance to heat and wear and its production |
-
1985
- 1985-01-17 JP JP60004906A patent/JPS61166931A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5597447A (en) * | 1979-01-19 | 1980-07-24 | Sumitomo Electric Ind Ltd | Aluminum sintered alloy and production of the same |
| JPS5959856A (en) * | 1982-09-28 | 1984-04-05 | Showa Denko Kk | High strength powder moldings of aluminum alloy having excellent lubricity, resistance to heat and wear and its production |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61186444A (en) * | 1985-02-12 | 1986-08-20 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | High strength, heat and wear resistant al alloy |
| JPS61186443A (en) * | 1985-02-12 | 1986-08-20 | Alum Funmatsu Yakin Gijutsu Kenkyu Kumiai | High strength, heat and wear resistant al alloy |
| JPS6210237A (en) * | 1985-07-09 | 1987-01-19 | Showa Denko Kk | Aluminum alloy for hot forging |
| JPS62199703A (en) * | 1986-02-26 | 1987-09-03 | Sumitomo Light Metal Ind Ltd | Hot hydrostatic compression molding method for al-si powder alloy |
| JPS6342344A (en) * | 1986-08-06 | 1988-02-23 | Honda Motor Co Ltd | Al alloy for powder metallurgy excellent in high temperature strength characteristic |
| JPH01132734A (en) * | 1987-02-10 | 1989-05-25 | Sumitomo Light Metal Ind Ltd | Aluminum alloy for vane material |
| JPS63219554A (en) * | 1987-03-07 | 1988-09-13 | Mazda Motor Corp | Production of al-si alloy member having excellent wear resistance |
| DE4014865A1 (en) * | 1989-05-10 | 1990-11-15 | Mazda Motor | METHOD FOR PRODUCING A WEAR-RESISTANT ALUMINUM ALLOY PART |
| US4976917A (en) * | 1989-05-10 | 1990-12-11 | Mazda Motor Corporation | Method of manufacturing hardwearing aluminum alloy part |
| EP0589137A1 (en) * | 1992-09-29 | 1994-03-30 | Mazda Motor Corporation | Wear resistant sliding member and method of manufacturing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0121213B2 (en) | 1989-04-20 |
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