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1. (WO2018159219) MARAGING STEEL AND METHOD FOR MANUFACTURING SAME
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Pub. No.: WO/2018/159219 International Application No.: PCT/JP2018/003763
Publication Date: 07.09.2018 International Filing Date: 05.02.2018
IPC:
C22C 38/00 (2006.01) ,C21D 6/00 (2006.01) ,C21D 8/02 (2006.01) ,C22C 38/52 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
6
Heat treatment of ferrous alloys
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
8
Modifying the physical properties by deformation combined with, or followed by, heat treatment
02
during manufacturing of plates or strips
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
38
Ferrous alloys, e.g. steel alloys
18
containing chromium
40
with nickel
52
with cobalt
Applicants:
株式会社神戸製鋼所 KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD.) [JP/JP]; 兵庫県神戸市中央区脇浜海岸通二丁目2番4号 2-4, Wakinohama-Kaigandori 2-chome, Chuo-ku, Kobe-shi, Hyogo 6518585, JP
Inventors:
陳 朱耀 CHEN, Zhuyao; --
宮村 剛夫 MIYAMURA, Takeo; --
難波 茂信 NAMBA, Shigenobu; --
Agent:
小谷 悦司 KOTANI, Etsuji; JP
小谷 昌崇 KOTANI, Masataka; JP
宇佐美 綾 USAMI, Aya; JP
Priority Data:
2017-03914902.03.2017JP
2017-09387710.05.2017JP
Title (EN) MARAGING STEEL AND METHOD FOR MANUFACTURING SAME
(FR) ACIER MARAGING ET SON PROCÉDÉ DE FABRICATION
(JA) マルエージング鋼およびその製造方法
Abstract:
(EN) The present invention relates to a maraging steel containing, in terms of mass%, 0.02% or less of C, 0.3% or less of Si, 0.3% or less of Mn, 7.0-15.0% Ni, 5.0% or less of Cr, 8.0-12.0% Co, 0.1-2.0% Mo, 1.0-3.0% Ti, and 0.01-0.2% Sol. Al, the remainder comprising Fe and unavoidable impurities, the content of P, S, N, and O included as the unavoidable impurities being, in terms of mass%, 0.01% or less of P, 0.01% or less of S, 0.01% or less of N, and 0.01% or less of O, the parent phase being composed of a martensitic phase, and the parent phase including an area fraction of 25%-75% of a martensitic phase transformed from an austenitic phase after reverse transformation of a martensitic phase to the austenitic phase.
(FR) La présente invention concerne un acier maraging contenant, en termes de % en masse, 0,02 % ou moins de C, 0,3 % ou moins de Si, 0,3 % ou moins de Mn, de 7,0 à 15,0 % de Ni, 5,0 % ou moins de Cr, de 8,0 à 12,0 % de Co, 0,1 à 2,0 % de Mo, de 1,0 à 3,0 % de Ti et 0,01 à 0,2 % de Sol. Al, le reste comprenant du Fe et des impuretés inévitables, la teneur en P, S, N et O étant comprise en tant qu'impuretés inévitables, en termes de % en masse, de 0,01 % ou moins de P, 0,01 % ou moins de S, 0,01 % ou moins de N, et 0,01 % ou moins de O, la phase parente étant composée d'une phase martensitique, et la phase parente comprenant une fraction de surface de 25 % à 75 % d'une phase martensitique transformée à partir d'une phase austénitique après transformation inverse d'une phase martensitique en phase austénitique.
(JA) 本発明は、C:0.02質量%以下、Si:0.3質量%以下、Mn:0.3質量%以下、Ni:7.0~15.0質量%、Cr:5.0質量%以下、Co:8.0~12.0質量%、Mo:0.1~2.0質量%、Ti:1.0~3.0質量%、Sol.Al:0.01~0.2質量%を含有し、残部がFeおよび不可避不純物からなり、前記不可避不純物として含まれるP、S、NおよびOがそれぞれ、P:0.01質量%以下、S:0.01質量%以下、N:0.01質量%以下、O:0.01質量%以下であり、母相がマルテンサイト相で構成されており、かつ前記母相は、マルテンサイト相からオーステナイト相に逆変態した後に、当該オーステナイト相から変態したマルテンサイト相を25%~75%の面積分率で含むマルエージング鋼に関する。
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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, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, KE, KG, KH, 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 (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)