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Influence of copper amount on the pack boronizing behaviour of Fe-Cu binary alloys [Fe-Cu ̄kili alaşimlarinin kutu borlama davranişina bakir miktarinin etkisi]
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نویسنده
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cengiz s. ,gençer y. ,tarakçi m. ,azakli y.
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منبع
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journal of the faculty of engineering and architecture of gazi university - 2015 - دوره : 30 - شماره : 3 - صفحه:339 -349
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چکیده
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The fe-cu binary alloys prepared with the addition of 1,2,4,8 and 16 at. % copper along with pure iron were pack boronised at 1000°c' for 3 h. the microstructure,chemical composition,phase contents and microhardness of the formed boride layers were characterized by means of xrd,(scanning electron microscopy-energy dispersive x-ray diffraction) sem-eds and vickers microhardness measurements. the increasing amount of cu in the fe-cu alloys resulted in change of boride morphology and boride crystals growing towards the substrates become thinner and longer with saw tooth morphology. copper atoms has neither formed a cuxby compound nor made a solid solution in fe-b. however,copper rich precipitates were accumulated parallel to the growth direction of the boride crystals. the amount and size of these precipitates increased with the increase of cu in fe-cu alloys. the boron rich feb phase formation was favored and total boride layer thickness increased though the hardness of the boride layer decreased with the increase of cu in the substrates.
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کلیدواژه
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Boride layer morphology; Fe-Cu alloy; Fe2B; FeB; Pack boriding
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آدرس
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gebze teknik üniversitesi,malzeme bilimi ve mühendisliʇi,gebze, Turkey, gebze teknik üniversitesi,malzeme bilimi ve mühendisliʇi,gebze, Turkey, gebze teknik üniversitesi,malzeme bilimi ve mühendisliʇi,gebze, Turkey, gebze teknik üniversitesi,malzeme bilimi ve mühendisliʇi,gebze, Turkey
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Authors
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