Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi 1309-1751 Kahramanmaraş Sütçü İmam Üniversitesi 10.17780/ksujes.292373 Engineering Mühendislik Ferroniyobyum ve Ferrobor İçeren Tozaltı Kaynak Tozları ile Elde Edilen Kaplamaların Mikroyapı ve Aşınma Özelliklerinin Araştırılması Microstructure and Wear Properties of Hardfacings Obtained Using Submerged Arc Welding Powders Containing Ferroniobium and Ferroboron Kaptanoğlu Mustafa FIRAT UNIV Eroğlu Mehmet FIRAT UNIV 04 27 2017 20 1 64 75 02 15 2017 Copyright © 1998, Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi 1998 Kahramanmaraş Sütçü İmam Üniversitesi Mühendislik Bilimleri Dergisi

Bu çalışmada, SAE 1020 çelik yüzeylerde sert dolgu kaplama eldeetmek amacıyla, 4 farklı oranda ferroniyobyum ve ferrobor içeren tozaltı kaynaktozları, S1 kaynak telleri ile kombine edilerek tozaltı kaynak testlerine tabitutulmuştur. Gerçekleştirilen kaynak testleri neticesinde; elde edilenkaplamaların mikroyapı, sertlik ve aşınma özellikleri incelenmiştir. Artanmiktarlardaki ferroniyobyum ve ferroborun toz bünyesinde kullanılmasıyla eldeedilen kaplama mikroyapılarında yer alan borürlerin yüzdesi artmış, sertliklerartmış ve kaplamaların aşınma kayıpları azalmıştır. En yüksek sertlikler %12ferroniyobyum ve %10 ferrobor içeren kaynak tozu ile elde edilen kaplamada 48HRC olarak tespit edilirken, en düşük sertlikler ise %3 ferroniyobyum ve %2.5ferrobor içeren kaynak tozu ile elde edilen kaplamada 41 HRC olarak tespitedilmiştir.

In this study, submerged arc welding powders containingferroniobium and ferroboron at four different rates combined withS1 welding wires subjected to the welding test with the aim ofhardfacing on SAE 1020 steel surface. As a results of welding tests,microstructure, hardness and wear properties of hardfacings wereinvestigated. With an increase in amounts of ferroniobium andferroboron in welding powders, both percentage of boride structurelocated in hardfacing microstructure were increased, and thehardness increased. Therefore, the wear losses decreased. Thehighest hardness result was determined with the hardfacingobtained from the welding powder containing %12 ferroniobiumand %10 ferroboron as 48 HRC, the lowest hardness result wasdetermined with the hardfacing obtained from the welding powdercontaining %3 ferroniobium and %2,5 ferroboron as 41 HRC

 Tozaltı kaynağı Sert Dolgu Kaynağı Tozaltı Kaynak Tozu Submerged Arc Welding Hardfacing Submerged Arc Welding Powder [6] Kanjilal P., Pal T.K., Majumdar S.K. (2006) ‘’ Combined effect of flux and welding parameters on chemical composition and mechanical properties of submerged arc weld metal’’, Journal of Materials Processing Technology, 171, 223-231. [7] Mercado A.M.P., Lopez V.M., Rosales J.D., Diaz P.E., Valdez E.D. (2009). Effect of TiO2-containing fluxes on the mechanical properties and microstructure in submerged-arc weld steels, 60, 1, 36-39. [10] www.askaynak.com.tr, (25 Kasım 2016). [11] www.gedikkaynak.com.tr, (25 Kasım 2016). [12] www.oerlikon.com.tr, ( 25 Kasım 2016). [13] Berns H., Fischer A. (1987) ‘’Microstructure of Fe-Cr -C-B alloys addition of Nb,Ti and B’’ Metallography, 20:401-429. [14] Ke Y. , Zhi-xi Z., Wang- qin H., Ye-feng B., Yang-Feng J. (2011). ‘’A new type of submerged arc flux cored wired used for hardfacing continous casting rolls’’ Journal of iron and steel research international 18(11), 74-79. [15] Singh B., Khan Z.A., Siddiquee A.N. October 2013 ’’Review on effect offlux composition on its behavior and bead geometry in submerged arc welding(SAW), Journal of Mechanical Engineering Research, Vol. 5(7), pp.12-12. [16] Kim1 J.T., Hong S.H., Park H.J., Park G.H.,. Suh J.Y, Park J.M. Kim K.B. (2015). ‘Influence of microstructural evolution on mechanical behavior of Fe-Nb-B ultrafine composites with a correlation to elastic modulus and hardness’’, Journal of Alloys and Compounds 2015, (10.1016/j.jallcom.2015.05.246). [17] Koga G.Y., Nogueira R.P., Roche V., Yavari A.R.,Melle A.K., Gallegod J., Bolfarini C., Kiminami C.S., Botta W.J., (2014), ‘’Corrosion properties of Fe–Cr–Nb–B amorphous alloys and coatings’’, Surface & Coatings Technology 254, 238–243. [18] Kim2 J.T., Hong S.H., ParkH.J. , Kim Y.S. Park G.Y. Park J.Y. Lee N., Seo Y. ,Park J.M. ,Kim K.B., (2015), ‘’Improving the plasticity and strength of Fe–Nb–B ultrafine eutectic composite’’, Materials and Design 76 190–195. [19] Savaşkan T. (2009), Malzeme Bilgisi Ve Muayenesi, Genişletilmiş 5.Baskı Trabzon. [20] Azimi G.H., (2012).’’ Microstructure and wear properties of Fe-Cr-C and Fe-Cr-Nb-C clads on carbon steel by TIG surfacing process’’, Int. J.Surface Science andEngineering,Vol.6,Nos. ½. [21] Wang Q. Xiaoyan L., (2010), ‘‘Effects of Nb, V, and W on Microstructureand Abrasion Resistance of Fe-Cr-C Hardfacing Alloys’ ,Supplement to the welding journal, Welding Journal Page 133-139. [22] Kılınc B., Durmaz Abakay M., Sen U. , Sen S., (2015), ‘’Wear behavior of the surface alloyed AISI 1020 steel with Fe-Nb-B by TIG welding technique’’, AIP Conference Proceedings 1653, 020058 ; doi: 10.1063/1.4914249. [16] Kim1 J.T., Hong S.H., Park H.J., Park G.H.,. Suh J.Y, Park J.M. Kim K.B. (2015). ‘Influence of microstructural evolution on mechanical behavior of Fe-Nb-B ultrafine composites with a correlation to elastic modulus and hardness’’, Journal of Alloys and Compounds 2015, (10.1016/j.jallcom.2015.05.246). [17] Koga G.Y., Nogueira R.P., Roche V., Yavari A.R.,Melle A.K., Gallegod J., Bolfarini C., Kiminami C.S., Botta W.J., (2014), ‘’Corrosion properties of Fe–Cr–Nb–B amorphous alloys and coatings’’, Surface & Coatings Technology 254, 238–243. [18] Kim2 J.T., Hong S.H., ParkH.J. , Kim Y.S. Park G.Y. Park J.Y. Lee N., Seo Y. ,Park J.M. ,Kim K.B., (2015), ‘’Improving the plasticity and strength of Fe–Nb–B ultrafine eutectic composite’’, Materials and Design 76 190–195. [19] Savaşkan T. (2009), Malzeme Bilgisi Ve Muayenesi, Genişletilmiş 5.Baskı Trabzon. [20] Azimi G.H., (2012).’’ Microstructure and wear properties of Fe-Cr-C and Fe-Cr-Nb-C clads on carbon steel by TIG surfacing process’’, Int. J.Surface Science andEngineering,Vol.6,Nos. ½. [21] Wang Q. Xiaoyan L., (2010), ‘‘Effects of Nb, V, and W on Microstructureand Abrasion Resistance of Fe-Cr-C Hardfacing Alloys’ ,Supplement to the welding journal, Welding Journal Page 133-139. [22] Kılınc B., Durmaz Abakay M., Sen U. , Sen S., (2015), ‘’Wear behavior of the surface alloyed AISI 1020 steel with Fe-Nb-B by TIG welding technique’’, AIP Conference Proceedings 1653, 020058 ; doi: 10.1063/1.4914249.