Ni/Ti TOZLARININ PTA YÖNTEMİYLE AISI 1020 YÜZEYİNDEKİ KAPLAMALARININ MİKROYAPI ÖZELLİKLERİ

Yıl 2008, Cilt: 6 Sayı: 2, 125 - 131, 30.03.2008

Ali Kaya Gür , Ayhan Orhan , Uğur Çalıgülü

Öz

Bu
çalışmada; AISI 1020 düşük karbonlu çelik
yüzeyine PTA (Plazma Tungsten Ark) yöntemiyle Ni/Ti tozları kaplanmıştır.
Kaplama tabakasından elde edilen Ni-Ti-Fe kompozitinin kafes yapısı, üçlü faz denge
diyagramı ile karşılaştırılarak oluşması muhtemel fazlar belirlenmeye
çalışılmıştır. Ana malzeme olan AISI 1020’nin mikrosertliği 210 HV iken, yüzey tabakasının mikrosertliği
690 HV olarak ölçülmüş ve sertlik de-ğerlerinde önemli ölçüde artış
sağlanmıştır. Elde edilen kaplama tabakalarının, SEM görüntüleri ve EDS
analizleri yapılarak mikrosertlik değerleri ile kıyaslanmıştır.

Anahtar Kelimeler

AISI 1020, PTA, Ni/Ti tozları, Kaplama

Kaynakça

• 1. Yarali Y. Plazma Yöntemleri ile Yüzey Kapla-maları ve Modifikasyonları, DPT Projesi, Sakar-ya Üniversitesi, 2002.
• 2. Bourithis L. Milonas A. and Papadimitriou G.D. Plasma transferred arc surface alloying of a construction steel to produce a metal matrix composite tool steel with TiC as reinforcing particles, Surface and Coatings Technology 2003, 215:286-295.
• 3. Atony K.C. Antony A.N. Bhansali K.J. Messler R.W. Miller A.E. and Price M.O. ASM Hand-book. In:Hardfacing, vol:6, 1983.
• 4. Hallen H. Eugscheider E. Ait-Mechideche A. Hettiger F. Morkramer U. and Lugscheiderin E. Proceedings of the International Thermal Spray Conference, 1992, pp:893, Orlando/USA.
• 5. Shin J.C. Doh J.M. Yoon J.K. Lee D.Y. and Kim J.S. Effect of molybdenum on the microstructure and wear resistance of cobalt-base Stellite hardfacing alloys, Surface and Coatings Technology 2003, 127:117-126.
• 6. Wu P. Zhou C.Z. Tang X.N. Microstructural characterization and wear behavior of laser cladded nickel-based and tungsten carbide composite coatings, Surface and Coatings Technology 2003, 166:84-88.
• 7. Lim L.C. Ming Q. and Chen Z.D. Microstructures of laser-clad nickel-based hardfacing alloys, Surface and Coatings Technology 1998, 106:183-192.
• 8. Lin Y.C. and Wang S.W. Wear behavior of ceramic powder cladding on an S50C steel surface, Tribology International 2003, 36:1-9.
• 9. Juang S.C. and Tarng Y.S. Process parameter selection for optimizing the weld pool geometry in the tungsten inert gas welding of stainless steel, Journal of Materials Processing Technology 2002, 122:33-37.
• 10. Kathuria Y.P. Some aspects of laser surface cladding in the turbine industry, Surface Coatings and Technology 2000, 132:262-269.
• 11. Kim H.J. Yoon B.H. and Lee C.H. Wear performance of the Fe-based alloy coatings produced by plasma transferred arc weld-surfacing process, Wear 2002, 249:846-852.
• 12. Selvan J.S. Subramanian K. and Nath A.K. Laser alloying of aluminum with electrodepo-sited nickel: optimization of plating thickness and processing parameters, Journal of Materials Processing Technology 1999, 91:29-36.
• 13. Zeng C.L. and Wu W.T. Corrosion of Ni-Ti alloys in the molten (Li,K)2CO3 eutectic mixture, Corrosion Science 2002, 44:1-12.
• 14. Wang H.M. Wang C.M. and Cai L.X. Wear and corrosion resistance of laser clad Ni2Si/NiSi composite coatings, Surface and Coatings Technology 2003, 168:202-208.
• 15. Pantelis D.I. Bouyiouri E. Kouloumbi N. Vassiliou P. and Koutsomichalis A. Wear and corrosion resistance of laser surface hardened structural steel, Surface and Coatings Technology 2002, 298:125-134.
• 16. Corbin S.F. Toyserkani E. and Khajepour A. Cladding of an Fe-aluminide coating on mild steel using pulsed laser assisted powder deposi-tion, Materials Science and Engineering A 2003, 354:48-57.
• 17. Buytoz S. Gür A.K. ve Sarsılmaz F. Tungsten asal gaz yöntemiyle üretilen SiCp esaslı kapla-maların mikroyapısı, Metal Makine Dergisi 2005, 180-187.
• 18. Raghu D. and Webber R. PTA proves its work in high-volume hard facing jobs, Welding Journal 1996, 75:34-40.
• 19. Chen T.M. Liu T.S. and. Chen L.H. Overlaying of Stellite 6 superalloy on austenitic manganese steel by PTA method, Proceedings of the Sixth Conference on Surface Modification Technologies 1992, Chicago/USA.
• 20. Sagawa H. Fundamental research on metal composition and layer structure of clad metal with high-corrosion resistance and brazing-strength, Hitachi Cable Review 2007, Germany.