Global Patent Index - EP 0091279 B1

EP 0091279 B1 19861210 - NI-BASE ALLOY MEMBER AND METHOD OF PRODUCING THE SAME

Title (en)

NI-BASE ALLOY MEMBER AND METHOD OF PRODUCING THE SAME

Publication

EP 0091279 B1 19861210 (EN)

Application

EP 83301811 A 19830330

Priority

JP 5578082 A 19820402

Abstract (en)

[origin: EP0091279A1] A nickel-base alloy with high stress corrosion cracking resistance and suitable for use as material for springs and bolts used in nuclear reactors consists essentially of, by weight, up to 0,15%C, up to 1%Si, up to 1,5%Mn, 14 to 25%Cr, up to 30%Fe, 0,2 to 2%Al, 0,5 to 3%Ti, 0,7 to 4,5%Nb and the balance substantially Ni, the high stress corrosion cracking resistance of this alloy in high-purity water at high temperatures and pressures (typically 288 DEG C, 86kg(cm<2>) is obtained by 1) cold plastic working at a ratio of at least 40% between the solution heat treatment and the direct aging treatment or 2) cold plastic working at a ratio of beyond 25% between the solution heat treatment and a two-stepped aging treatment.

IPC 1-7

C22F 1/10; C22C 19/05

IPC 8 full level

C22C 19/05 (2006.01); C22F 1/00 (2006.01); C22F 1/10 (2006.01)

CPC (source: EP)

C22C 19/058 (2013.01); C22F 1/10 (2013.01)

Citation (examination)

Designated contracting state (EPC)

DE FR SE

DOCDB simple family (publication)

EP 0091279 A1 19831012; EP 0091279 B1 19861210; DE 3368289 D1 19870122; JP S58174538 A 19831013; JP S6211058 B2 19870310

DOCDB simple family (application)

EP 83301811 A 19830330; DE 3368289 T 19830330; JP 5578082 A 19820402