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1. (WO2018143837) HIGH STRENGTH CRYOGENIC AUSTENITIC CORROSION RESISTANT WELDABLE CONSTRUCTION STEEL AND PRODUCTION METHOD
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Pub. No.:
WO/2018/143837
International Application No.:
PCT/RU2017/000662
Publication Date:
09.08.2018
International Filing Date:
11.09.2017
IPC:
C22C 38/58
(2006.01) ,
C21D 8/02
(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
18
containing chromium
40
with nickel
58
with more than 1.5% by weight of manganese
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
Applicants:
ФЕДЕРАЛЬНОЕ ГОСУДАРСТВЕННОЕ АВТОНОМНОЕ ОБРАЗОВАТЕЛЬНОЕ УЧРЕЖДЕНИЕ ВЫСШЕГО ОБРАЗОВАНИЯ "НАЦИОНАЛЬНЫЙ ИССЛЕДОВАТЕЛЬСКИЙ ТЕХНОЛОГИЧЕСКИЙ УНИВЕРСИТЕТ "МИСИС" NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY "MISIS"
[RU/RU]; Ленинский проспект, 4 Москва, Leninsky prospect, 4 Moscow, 119049, RU
Inventors:
ФИЛОНОВ, Михаил Рудольфович FILONOV, Mikhail Rudolfovich
; RU
БАЖЕНОВ, Вячеслав Евгеньевич BAZHENOV, Viacheslav Evgenevich
; RU
ГЛЕБОВ, Александр Георгиевич GLEBOV, Alexandr Georgievich
; RU
КАПУТКИНА, Людмила Михайловна KAPUTKINA, Liudmila Michailovna
; RU
КАПУТКИН, Дмитрий Ефимович KAPUTKIN, Dmitry Efimovich
; RU
КИНДОП, Владимир Эдельбертович KINDOP, Vladimir Edelbertovich
; RU
СВЯЖИН, Анатолий Григорьевич SVYAZHIN, Anatoly Grigorievich
; RU
СМАРЫГИНА, Инга Владимировна SMARYGINA, Inga Vladimirovna
; RU
Agent:
ПРОТАСЕНКО, Марина Николаевна PROTASENKO, Marina Nikolaevna
; RU
Priority Data:
2017103168
31.01.2017
RU
Title
(EN)
HIGH STRENGTH CRYOGENIC AUSTENITIC CORROSION RESISTANT WELDABLE CONSTRUCTION STEEL AND PRODUCTION METHOD
(FR)
ACIER CRYOGÉNIQUE ET AUSTÉNITIQUE À RÉSISTANCE ÉLEVÉE DESTINÉ À LA CONSTRUCTION, SOUDABLE ET RÉSISTANT À LA CORROSION ET PROCÉDÉ DE PRODUCTION
Abstract:
(EN)
This invention relates to the metallurgy. The structural high strength cryogenic austenitic corrosion resistant weldable construction steel comprises the following elements in the ratios, wt.%: C - 0.05-0.07, Cr - 18.0-20.0, Ni - 5.0-7.0, Mn - 9.0- 11.0, Mo - 1.8-2.2, Si - 0.25-0.35, N - 0.30-0.38, Cu - 0.6-1.4, B - 0.005-0.015, Al - 0.015-0.035, S≤0.0025, P≤0.015, Sn≤0.005, Pb≤0.005, Bi≤0.005, As≤0.005, Fe - balance. The method of thermal deformation processing of the construction steel comprises: steel ingot heating, ingot deformation to a workpiece in the 1250-1050°C temperature range with a total strain rate of at least 50%, air cooling of the workpiece, straining of the resultant plate in the 1180-1080°C temperature range with a total compression rate of at least 40% and final straining in 2-3 runs with a total compression rate of 30-80% in the 1150- 1080°C temperature range with the finishing rolling temperature of 1050-1080°C, followed by rapid cooling at a 20-100°C/s rate to room temperature.
(FR)
La présente invention concerne la métallurgie. L'acier structural cryogénique et austénitique à résistance élevée destiné à la construction, soudable et résistant à la corrosion comprend les éléments selon les rapports suivants, en % en poids : C de 0,05 à 0,07, Cr de 18,0 à 20,0, Ni de 5,0 à 7,0, Mn de 9,0 à 11,0, Mo de 1,8 à 2,2, Si de 0,25 à 0,35, N de 0,30 à 0,38, Cu de 0,6 à 1,4, B de 0,005 à 0,015, Al de 0,015 à 0,035, S ≤ 0,0025, P ≤ 0,015, Sn ≤ 0,005, Pb ≤ 0,005, Bi ≤ 0,005, As ≤ 0,005, et le reste étant du Fe. Le procédé de traitement de déformation thermique de l'acier de construction comprend : le chauffage de lingot d'acier, la déformation de lingot en une pièce à usiner dans la plage de température allant de 1 250 à 1 050 °C présentant une vitesse de déformation totale d'au moins 50 %, le refroidissement à l'air de la pièce à usiner, le bridage de la plaque résultante dans la plage de température allant de 1 180 à 1 080 °C présentant un taux de compression total d'au moins 40 % et un bridage final en 2 à 3 courses présentant un taux de compression total de 30 à 80 % dans la plage de température allant de 1 150 à 1 080 °C à la température de laminage de finition de 1 050 à 1 080 °C, suivi d'un refroidissement rapide à une vitesse de 20 à 100 °C/s jusqu'à température ambiante.
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, JP, 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:
English (
EN
)
Filing Language:
English (
EN
)