FERRITE-MARTENSITE TWO-PHASE STAINLESS STEEL, AND

专利名称：FERRITE-MARTENSITE TWO-PHASE

STAINLESS STEEL, AND METHOD FORPRODUCING SAME

发明人：ISHII, TOMOHIRO,OTA, HIROKI,KAMI,

CHIKARA,MURATA, SAIICHI,FUJISAWA,MITSUYUKI,ISHIBASHI, GENICHI

申请号：EP14859015申请日：20141027公开号：EP3029170A4公开日：20161005

摘要：Provided are ferrite-martensite dual-phase stainless steel having satisfactorycorrosion resistance and workability, which are required for a material for the body of afreight car, and having excellent low-temperature toughness and a method for

manufacturing the stainless steel. The ferrite-martensite dual-phase stainless steel has aspecified chemical composition, in which inequalities (I) and (II) below are satisfied, and asteel microstructure including a dual phase of a ferrite phase and a martensite phase, inwhich the content of the martensite phase is 5% or more and 95% or less in terms ofvol.%: 10.5 ‰¤ Cr + 1.5 × Si ‰¤ 13.5 1.5 ‰¤ 30 × C + N + Ni + 0.5 × Mn ‰¤ 6.0 where Crand Si in inequality (I) above and C, N, Ni, and Mn in inequality (II) above respectivelyrepresent the contents (mass%) of the corresponding chemical elements.

申请人：JFE STEEL CORPORATION

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