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EFFECTS OF ELECTRO-SLAG REMELTING PROCESS (ESR) ON MACROSTRUCTURE AND REFINEMENT OF A MEDICAL GRADE OF STAINLESS STEEL
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نویسنده
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Ahmadi S. ,Shahverdi H. R. ,Arabi H.
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منبع
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iranian journal of materials science and engineering - 2014 - دوره : 11 - شماره : 3 - صفحه:11 -17
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چکیده
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This study is focused on the effects of electroslag remelting by prefused slag (cao, al2o3, and caf2) onmacrostructure and reduction of inclusions in the medical grad of 316lc (316lvm) stainless steel. results showedthat in order to obtain uniform ingot structures during electroslag remelting, the shape and depth of the molten poolshould be carefully controlled. high melting rates lead to deeper pool depths and interior radial solidificationcharacteristics. furthermore, decrease in the melting rate caused more reduction of non-metallic inclusions. inpractice, large shrinkage cavities formed during the conventional casting process in the primary ingots were the causeof the fluctuation in the melting rate, pool depth and extension of equiaxal crystals zone.
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کلیدواژه
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ultra clean steel ,electroslag remelting ,prefused slag ,vertical solidification ,radial solidification and 316LVM
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آدرس
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Bio-materials group, Materials & Bio-materials research Center, Tehran, Iran., ایران, tarbiat modares university, ایران, iran university of science and technology, ایران
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Authors
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