Processing

Please wait...

Settings

Settings

Goto Application

1. WO2020128681 - CRYOGENIC PRESSURE VESSELS FORMED FROM LOW-CARBON, HIGH-STRENGTH 9% NICKEL STEELS

Publication Number WO/2020/128681
Publication Date 25.06.2020
International Application No. PCT/IB2019/060019
International Filing Date 21.11.2019
IPC
C21D 6/00 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
6Heat treatment of ferrous alloys
C21D 1/18 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening; Quenching with or without subsequent tempering
C21D 1/22 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening; Quenching with or without subsequent tempering
19by interrupted quenching
22Martempering
C22C 38/08 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
08containing nickel
C22C 38/12 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
12containing tungsten, tantalum, molybdenum, vanadium or niobium
C22C 38/44 2006.01
CCHEMISTRY; METALLURGY
22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
CALLOYS
38Ferrous alloys, e.g. steel alloys
18containing chromium
40with nickel
44with molybdenum or tungsten
Applicants
  • ARCELORMITTAL [LU]/[LU]
Inventors
  • FRALEY, George Jay
  • FLETCHER, Frederick
Agents
  • PLAISANT, Sophie
Priority Data
PCT/IB2018/06032319.12.2018IB
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) CRYOGENIC PRESSURE VESSELS FORMED FROM LOW-CARBON, HIGH-STRENGTH 9% NICKEL STEELS
(FR) RÉCIPIENTS SOUS PRESSION CRYOGÉNIQUES FORMÉS À PARTIR D'ACIERS AU NICKEL À 9 % À HAUTE RÉSISTANCE ET À FAIBLE TENEUR EN CARBONE
Abstract
(EN)
A cryogenic pressure vessel of formed of an ASTM A553 Type 1 cryogenic steel alloy comprising in wt.%: C: 0.01 - 0.04; Mn: up tp 2.0; P: up to 0.02; S: up to 0.15; Si: up to 1.0; Ni: 7 - 11; Cr: up to 1.0; Mo: up to 0.75; V: up to 0.2; Nb: up to 0.1; Al: up to 0.1; and N: up to 0.01. The steel alloy may have an ultimate tensile strength of at least 900 MPa, a total elongation of at least 20%; a microstructure comprised of between 5 and 20 area % reverted austenite and the remainder tempered martensite; a transverse Charpy impact energy of at least 27 J at -196 °C; and a lateral expansion of at least 0.381 mm at -196 °C.
(FR)
L'invention concerne un récipient sous pression cryogénique formé d'un alliage d'acier cryogénique de Type 1 ASTM A553 comprenant en % en poids : C : 0,01 - 0,04 ; Mn : jusqu'à 2,0 ; P : jusqu'à 0,02 ; S : jusqu'à 0,15 ; Si : jusqu'à 1,0 ; Ni : 7 - 11 ; Cr : jusqu'à 1,0 ; Mo : jusqu'à 0,75 ; V : jusqu'à 0,2 ; Nb : jusqu'à 0,1 ; Al : jusqu'à 0,1 ; et N : jusqu'à 0,01. L'alliage d'acier peut avoir une résistance à la traction à rupture d'au moins 900 MPa, un allongement total d'au moins 20 % ; une microstructure constituée d'entre 5 et 20 % en surface d'austénite inversée et le reste de martensite revenue ; une énergie d'impact Charpy transversal d'au moins 27 J à -196 °C ; et une expansion latérale d'au moins 0,381 mm à -196 °C.
Latest bibliographic data on file with the International Bureau