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1. (WO2018055687) STEEL PLATE
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.:    WO/2018/055687    International Application No.:    PCT/JP2016/077801
Publication Date: 29.03.2018 International Filing Date: 21.09.2016
IPC:
C22C 38/00 (2006.01), C21D 9/46 (2006.01), C22C 38/06 (2006.01), C22C 38/58 (2006.01)
Applicants: NIPPON STEEL & SUMITOMO METAL CORPORATION [JP/JP]; 6-1, Marunouchi 2-chome, Chiyoda-ku, Tokyo 1008071 (JP)
Inventors: SANO Kohichi; (JP).
AZUMA Masafumi; (JP).
SAKAKIBARA Mutsumi; (JP).
UENISHI Akihiro; (JP).
HAYASHI Koutarou; (JP)
Agent: SHIGA Masatake; (JP).
TERAMOTO Mitsuo; (JP).
TANAI Sumio; (JP).
KATSUMATA Tomoo; (JP).
YAMAGUCHI Yoh; (JP)
Priority Data:
Title (EN) STEEL PLATE
(FR) TÔLE D'ACIER
(JA) 鋼板
Abstract: front page image
(EN)The steel plate pertaining to an embodiment of the present invention contains a predetermined chemical component, the metallographic structure in a 1/4t part includes 4-70% by volume of residual austenite, [Mn]γ/[Mn]ave > 1.5 in the 1/4t part, and fγs/fγ ≤ 0.30 and [C] × [Mn] ≥ 0.15 in the 1/4t part.
(FR)Selon un mode de réalisation, la présente invention concerne une tôle d'acier contenant un composant chimique prédéterminé, la structure métallographique un composant chimique prédéterminé, la structure métallographique dans une partie 1/4t comprenant de 4 à 70 % en volume d'austénite résiduelle, [Mn]gamma/[Mn]ave > 1,5 dans la partie 1/4t, et fγs/fgamma ≤ 0,30 et [C] × [Mn] ≥ 0,15 dans la partie 1/4t.
(JA)本発明の一態様に係る鋼板は、所定の化学成分を含有し、1/4t部の金属組織が、残留オーステナイトを4~70体積%含み、前記1/4t部において、[Mn]γ/[Mn]ave>1.5であり、前記1/4t部において、fγs/fγ≦0.30であり、[C]×[Mn]≧0.15である。
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG).
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)