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DEMİR ESASLI TOZ METAL PARÇALARIN SİNTERLEME İLE BİRLEŞTİRİLMESİ

JOINING OF IRON BASED POWDER METALLURGY PARTS WITH SINTERING

Journal Name:

  • Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

Publication Year:

  • 2010

Key Words:

Keywords (Original Language):

Author NameUniversity of Author
Abstract (2. Language): 
In this study, joining of iron based green and pre-sintered powder metal parts by sintering was examined. Samples were pressed at 600 MPa and sintered at 1120ºC for 45 minutes under reducing (%90N2 + %10H2) and endogas atmospheres. Mechanical properties of iron based powder samples (Fe-%0.6P, Fe-%0.6P-%2Cu, Fe- %0.6P-%3Cu-%0.4C) were measured under green and sintered conditions. In joining with sintering experiments ring-pellet geometry was utilized. Green and pre-sintered ring (Fe-%0.6P, Fe-%0.6P-%2Cu) and pellet (Fe- %0.6P-%3Cu-%0.4C) samples were joined by sintering and their bonding strengths were measured. The interface formed after sinter joining was examined with optical and scanning electron microscopy. The study show that green parts can be joined by sintering without an appreciable loss in bonding strength.
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Abstract (Original Language): 
Bu çalışmada demir esaslı tozların ham ve ön sinterlenmiş halde mekanik geçme sonrası sinterleme ile birleştirilmesi incelenmiştir. Deneylerde presleme basıncı olarak 600 MPa kullanılmış ve sinterleme işlemleri endogaz ortamında ve indirgeyici gaz karışımında (%90N2 + %10H2) 1120°C’de 45 dakika süre ile yapılmıştır. Demir esaslı tozların (Fe-%0,6P, Fe-%0,6P-%2Cu, Fe-%0,6P-%3Cu-%0,4C) ham halde ve sinterlenmiş halde mekanik özellikleri ölçülmüştür. Sinterleme ile birleştirme işlemlerinde burç-pelet geometrisi kullanılmıştır. Demir esaslı tozlardan preslenerek hazırlanan burç (Fe-%0,6P, Fe-%0,6P-%2Cu) ve pelet (Fe-%0,6P-%3Cu- %0,4C) numuneler ham ve ön sinterlenmiş halde mekanik geçme sonrası sinterlenerek birleştirilmiş ve bağ dayanım değerleri ölçülmüştür. Ham halde sinterleme ile birleştirilen burç-pelet toz metal parçalarının arayüzeyleri optik ve taramalı elektron mikroskobu ile incelenmiştir. Çalışma sonucunda ham halde mekanik olarak geçirilen parçaların sinterleme ile birleştirme işlemlerinin yeterli düzeyde bağ dayanımı sağladığı bulunmuştur.
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REFERENCES

References: 

1. Hamill, J.A., Joining of Ferrous P/M Materials -
Principles and Case Studies, The International
Journal of Powder Metallurgy, 37(7), 41-45,
2001.
2. Fillabi, G., Simchi, A., Kokabi, H., Effect of
Iron Particle Size on the Diffusion Bonding of
Fe-5%Cu Powder Compact to Wrought Carbon
Steels, Materials and Design, 29 (2), 411-417,
2008.
3. T.Tabata, S.Masaki, K.Kitagawa, Y.Matsuoka,
K.Minami, Fabrication of Composite Parts by
Sinter Bonding, The International Journal of
Powder Metallurgy, 27 (3), 265-273, 1991.
4. T.Tabata, S.Masaki, H.Suzuki ve Q.Zhu, Bond
Strength of Sinter Bonded Composite Preforms,
The International Journal of Powder
Metallurgy, 25(1), 37-41,1989.
5. C.Çetiner, İ.Uslan, S.Sarıtaş, Toz Metal Bronz
Yatağın Düşük Karbonlu Çeliğe Difüzyon
Kaynağında Mikroyapısal Tespitler, 3.
Uluslararası Toz Metal Konferansı, 1322-
1330, 2002.
6. K.Asaka and T.Hayasaka, Diffusion Bonding
Method to Assemble Green Compacts During
Sintering, Metal Powder Report, 39, 347-350,
1984.
7. T.Pieczonka and J.Kazior, Sinter-Bonding of
Iron Based Compacts Containing P and Cu,
Materials Science Forum 534, 633-636, 2007.
8. Akatsu, H., Iijima M., Direct Diffusion Bonding
Technique for Ferrous P/M Parts. Modern
Developments in Powder Metallurgy, 16, 195-
208, 1985.
9. Vyal, E., Laptev, M., Use of certain binders to
increase the strength of green compacts, Powder
Metallurgy and Metal Ceramics, 44, 614-618,
2005.
10. A.Aksoy, R.Ünal, Sıkıştırma Basıncı ve
Yağlayıcı Miktarının Demir Tozlarının Ham
Mukavemetine Etkisinin Araştırılması. 10.
Denizli Malzeme Sempozyumu ve Sergisi,
2004.
11. Simchi, A., Effects of Lubrication Procedure on
the Consolidation, Sintering and Microstructural
Features of Powder Compacts, Materials and
Design, 24, 585-594, 2003.
12. Lund, J.,Origins of Green Strength in Iron P/M
Compacts, The International Journal of
Powder Metallurgy and Powder Technology,
18(2), 117-127, 1982.
13. Phadke, B., Relationship Between Transverse
Rupture Strength and Hardness of P/M Fe-Cu
Alloys, The International Journal of Powder
Metallurgy and Powder Technology, 17(1),
37-43, 1981.
14. Kohno, T., Koczak, M.J., Rajagopalan, V.,
Nishino Y., Sintering Improvements in Strength
and Dimensional Control Utilizing Eutectic
Phosphide Additions in Iron-Copper-Carbon
Alloys, Modern Developments in Powder
Metallurgy, 15, 521-540, 1985.
15. ASM Handbook, Vol. 7, Powder Metallurgy,
ASM International, USA, s.1107, 1998.
16. German, R.M., Toz Metalurjisi ve Parçacıklı
Malzeme İşlemleri, Editörler: S.Sarıtaş,
M.Türker, N.Durlu, Ankara: Türk Toz
Metalurjisi Derneği Yayınları, 2007.
17. Lawcock, R.L., Davies, T.J., Effect of Carbon on
Dimensional and Microstructural Characteristics
of Fe-Cu Compacts During Sintering, Powder
Metallurgy, 33 (2), 147-150, 1990.
18. Wang, F.,W., Effect of Alloying Elements and
Processing Factors on the Microstructure and
Hardness of Sintered and Induction-Hardened Fe-
C-Cu Alloys, Materials Science and
Engineering A, 402, 92-97, 2005.

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