AUSTENITIC STAINLESS STEEL HAVING NIOBIUM AND MANUFACTURING METHOD OF THE SAME

According to an embodiment of the present invention, an austenitic stainless steel having niobium comprises: 16-26 wt% of chromium (Cr); 8-22 wt% of nickel (Ni); 0.02-0.1 wt% of carbon (C); 0.2-1 wt% of niobium (Nb); 0.015-0.025 wt% of titanium (Ti); 0.004-0.01 wt% of nitrogen (N); and 0.5-2 wt% of...

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Bibliographische Detailangaben
Hauptverfasser:	KONG BYEONG SEO, KIM HO SUB, LEE HYEON BAE, JANG CHANG HEUI, SHIN JI HO
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS PERFORMING OPERATIONS PUNCHING METAL ROLLING OF METAL TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	According to an embodiment of the present invention, an austenitic stainless steel having niobium comprises: 16-26 wt% of chromium (Cr); 8-22 wt% of nickel (Ni); 0.02-0.1 wt% of carbon (C); 0.2-1 wt% of niobium (Nb); 0.015-0.025 wt% of titanium (Ti); 0.004-0.01 wt% of nitrogen (N); and 0.5-2 wt% of manganese (Mn). The austenitic stainless steel has an austenitic base structure, and fine niobium carbide and fine titanium nitride are precipitated in the austenitic base structure, thereby the fine niobium carbide being uniformly dispersed in the austenitic base structure. 본 발명의 실시예에 따른 나이오븀 함유 오스테나이트계 스테인리스강 은 크롬(Cr) 16 ~ 26 중량%, 니켈(Ni) 8 ~ 22 중량%, 탄소(C) 0.02 ~ 0.1 중량%, 나이오븀(Nb) 0.2 ~ 1 중량%, 티타늄(Ti) 0.015 ~ 0.025 중량%, 질소(N) 0.004 ~ 0.01 중량%, 그리고 망간(Mn) 0.5 ~ 2 중량%을 포함하고, 오스테나이트계 기지 조직을 가지며, 오스테나이트계 기지 조직 내에 미세 나이오븀 탄화물 및 미세 티타늄 질화물이 석출되어 있으며, 미세 나이오븀 탄화물이 오스테나이트계 기지 조직 내에 균일하게 분산되어 있다.