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1. (WO2017037851) Cr-BASED TWO-PHASE ALLOY AND PRODUCT USING SAID TWO-PHASE ALLOY
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/037851 International Application No.: PCT/JP2015/074786
Publication Date: 09.03.2017 International Filing Date: 31.08.2015
IPC:
C22C 27/06 (2006.01) ,C22C 30/00 (2006.01) ,C22F 1/11 (2006.01) ,C22F 1/00 (2006.01)
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
27
Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/ or C22C16/130
06
Alloys based on chromium
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
C
ALLOYS
30
Alloys containing less than 50% by weight of each constituent
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
F
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
11
of chromium or alloys based thereon
C CHEMISTRY; METALLURGY
22
METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
F
CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS OR NON-FERROUS ALLOYS
1
Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
Applicants:
株式会社日立製作所 HITACHI, LTD. [JP/JP]; 東京都千代田区丸の内一丁目6番6号 6-6, Marunouchi 1-chome, Chiyoda-ku, Tokyo 1008280, JP
Inventors:
木村 友則 KIMURA Tomonori; JP
能島 雅史 NOUJIMA Masafumi; JP
青野 泰久 AONO Yasuhisa; JP
山内 博史 YAMAUCHI Hiroshi; JP
Agent:
ポレール特許業務法人 POLAIRE I.P.C.; 東京都中央区日本橋茅場町二丁目13番11号 13-11, Nihonbashikayabacho 2-chome, Chuo-ku, Tokyo 1030025, JP
Priority Data:
Title (EN) Cr-BASED TWO-PHASE ALLOY AND PRODUCT USING SAID TWO-PHASE ALLOY
(FR) ALLIAGE À DEUX PHASES À BASE DE Cr ET PRODUIT UTILISANT LEDIT ALLIAGE À DEUX PHASES
(JA) Cr基二相合金および該二相合金を用いた製造物
Abstract:
(EN) The purpose of the present invention is to provide a low-cost Cr-based two-phase alloy which is a metal material suitable for applications in a highly corrosive environment and in a temperature range of oil wells or the like, and which has high corrosion resistance and good mechanical characteristics equivalent to or higher than those of conventional metal materials for such applications. A Cr-based two-phase alloy according to the present invention has an austenite phase and a ferrite phase, and is characterized in that: the chemical composition of the Cr-based two-phase alloy contains from 34% by mass to 70% by mass (inclusive) of Cr, from 17% by mass to 45% by mass (inclusive) of Ni, from 10% by mass to 35% by mass (inclusive) of Fe, from 0.1% by mass to 2% by mass (inclusive) of Mn, from 0.1% by mass to 3% by mass (inclusive) of Mo, from 0.1% by mass to 1% by mass (inclusive) of Si and impurities; and the total content of Ni and Fe is from 30% by mass to 65% by mass (inclusive).
(FR) La présente invention a pour objet un alliage à deux phases à base de Cr de faible coût qui est un matériau métallique approprié pour des applications dans un environnement hautement corrosif et dans une plage de température de puits de pétrole ou similaire et qui a une résistance à la corrosion élevée et de bonnes caractéristiques mécaniques équivalentes ou supérieures à celles de matériaux métalliques classiques pour de telles applications. À cet effet, la présente invention porte sur un alliage à deux phases à base de Cr qui a une phase d'austénite et une phase de ferrite et qui est caractérisé en ce que : la composition chimique de l'alliage à deux phases à base de Cr contient de 34 % en masse à 70 % en masse (inclus) de Cr, de 17 % en masse à 45 % en masse (inclus) de Ni, de 10 % en masse à 35 % en masse (inclus) de Fe, de 0,1 % en masse à 2 % en masse (inclus) de Mn, de 0,1 % en masse à 3 % en masse (inclus) de Mo, de 0,1 % en masse à 1 % en masse (inclus) de Si et des impuretés; et la teneur totale de Ni et de Fe est de 30 % en masse à 65 % en masse (inclus)
(JA) 本発明は、油井のような温度域・高腐食環境下においても好適に利用できるような金属材料であって、従来と同等以上の高い耐食性と良好な機械的特性とを有しかつ低コストのCr基二相合金を提供することを目的とする。本発明に係るCr基二相合金は、オーステナイト相とフェライト相とを有するCr基二相合金であって、前記Cr基二相合金の化学組成は、34質量%以上70質量%以下のCrと、17質量%以上45質量%以下のNiと、10質量%以上35質量%以下のFeと、0.1質量%以上2質量%以下のMnと、0.1質量%以上3質量%以下のMoと、0.1質量%以上1質量%以下のSiと、不純物とを含み、前記Niと前記Feとの合計含有率が30質量%以上65質量%以下であることを特徴とする。
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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, 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, 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)