EFFECTS OF ELECTRO-SLAG REMELTING PROCESS (ESR) ON MACROSTRUCTURE AND REFINEMENT OF A MEDICAL GRADE OF STAINLESS STEEL
محل انتشار: مجله علم مواد و مهندسی ایران، دوره: 11، شماره: 3
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 38
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شناسه ملی سند علمی:
JR_IJMSEI-11-3_002
تاریخ نمایه سازی: 26 مرداد 1402
چکیده مقاله:
This study is focused on the effects of electroslag remelting by prefused slag (CaO, Al۲O۳, and CaF۲) on macrostructure and reduction of inclusions in the medical grad of ۳۱۶LC (۳۱۶LVM) stainless steel. Results showed that in order to obtain uniform ingot structures during electroslag remelting, the shape and depth of the molten pool should be carefully controlled. High melting rates lead to deeper pool depths and interior radial solidification characteristics. Furthermore, decrease in the melting rate caused more reduction of non-metallic inclusions. In practice, large shrinkage cavities formed during the conventional casting process in the primary ingots were the cause of the fluctuation in the melting rate, pool depth and extension of equiaxal crystals zone
کلیدواژه ها:
ultra clean steel ، electroslag remelting ، prefused slag ، vertical solidification ، radial solidification and ۳۱۶LVM
نویسندگان
S. Ahmadi
Bio-materials group, Materials & Bio-materials research Center, Tehran, Iran
H.R. Shahverdi
Department of Materials Science, Faculty of Engineering, Tarbiat Modares University, Tehran, Iran
H. Arabi
Center of Excellence for Advanced Materials and Processing (CEAMP), School of Metallurgy and Materials Engineering, Iran university of Science & Technology , Tehran, Iran