| Title |
Research Paper - Mechanical Working : Effects of Electroslag Remelting on the Ductility and Hot Workability of Austenitic Stainless Steel |
| Authors |
김태규(Tae Kyu Kim); 김성수(Sung Soo Kim) |
| Abstract |
Austenitic stainless steel was melted by air induction melting(AIM) method. Cast structure and amount of nonmetallic inclusion were observed. Ductility at room temperature and hot workability at high temperature were investigated. Air induction melted stainless steel ingot was remelted by electroslag remelting(ESR) process. Slag was composed of CaF₂, CaO and Al₂O₃. ESR ingot exhibited a defect free and unidirectionally grown columnar structure with a good surface finish. The amount of sulphide type inclusion was significantly reduced during ESR. Because of directional solidification structure and reduction of inclusion amount, mechanical properties such as ductility and hot workability of ESR treated ingot were much improved from those of AIM ingot. |