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Sert dolgu kaplamalar, pek çok mühendislik uygulamasında iş parçalarının aşınma ve korozyon direncini artırmak amacıyla kullanılan yöntemlerden biridir. Bu çalışmanın amacı, karbür yapıcı elementlerden molibden ve vanadyumun Fe-Cr-C esaslı sert dolgu alaşımlarına ilave edilerek mikroyapı ve aşınma özelliklerinde meydana gelecek değişimleri incelemektir. Her kaplama hem vanadyum hem de molibden içermektedir. Fe-Cr-C alaşımlarına %3, %4 oranlarında ferromolibden, %10, %12 oranlarında ferrovanadyum ilave edilmiştir. Kaplama içeriğinin primer M7C3 (M: Fe, Cr) ve M2C (M: Mo, Fe, Cr) karbürlerinden ve matrise yayılmış ince taneli sekonder karbürlerden oluştuğu gözlenmiştir. Artan ferromolibden ve ferrovanadyum ilavesinin karbür tane boyutunu küçülttüğü tespit edilmiştir. Bununla birlikte hacimsel karbür oranı ve sertlik artış eğilimi sergilemiştir. En yüksek sertlik ve buna bağlı olarak en düşük hacimsel aşınma kaybı %4 ferromolibden +%10 ferrovanadyum ilave edilen kaplamada tespit edilmiştir.
Hard filling coatings are one of the methods used in many engineering applications to increase the thinning and corrosion resistance of work parts. The aim of this study is to explore the future changes in the microbuilding and coating properties by adding carbon building elements to the molyb and vanadium fe-Cr-C-based hard filling alloys. Each coating contains both vanadium and molybdenum. Fe-Cr-C alloys were added ferromolibden at 3.4% and ferrovanadide at 10.12%. It has been observed that the coating content consists of primary M7C3 (M: Fe, Cr) and M2C (M: Mo, Fe, Cr) carbs, and thin tanel secondary carbs spread into the matrix. It has been found that increased ferromolibden and ferrovanadium additives have reduced the size of carbure one. However, the volume carbs rate and hardness tend to increase. The highest hardness and consequently the lowest volume deforestation loss was detected in the 4% ferromolibden + 10% ferrovanadium added coating.
Hardfacing coatings are one of the methods used in many engineering applications to increase the wear and corrosion resistance of workpieces. This study aims to examine the changes in microstructure and wear properties by adding carbide forming elements of molybdenum and vanadium together to Fe-Cr-C based hardfacing alloys. Each coating contains both vanadium and molybdenum. 3%, 4% ferromolybdenum, and 10%, 12% ferrovanadium were added to the Fe-Cr-C alloys. It was observed that the microstructure of coatings consists of primary M7C3 (M: Fe, Cr) and M2C (M: Mo, Fe, Cr) carbides and fine-grained secondary carbides dispersed in the matrix. It was observed that increasing ferromolybdenum and ferrovanadium addition reduces the carbide grain size. However, the volumetric carbide ratio and hardness showed an increasing trend with increasing ferrovanadium and ferromolybdenum. The highest hardness and consequently the lowest volumetric wear loss was determined in the coating including 4% ferromolybdenum + 10% ferrovanadium.
Alan : Mühendislik
Dergi Türü : Ulusal
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