EP 0198570 B1 19900829 - PROCESS FOR PRODUCING A THIN-WALLED TUBING FROM A ZIRCONIUM-NIOBIUM ALLOY
Title (en)
PROCESS FOR PRODUCING A THIN-WALLED TUBING FROM A ZIRCONIUM-NIOBIUM ALLOY
Publication
Application
Priority
US 69354685 A 19850122
Abstract (en)
[origin: EP0198570A2] Thin-walled tubing of a zirconium-niobium alloy is fabricated by a process using a beta-quench prior to extrusion, the material being extruded at a temperature of 650 DEG C or lower and cold worked with annealing, between a plurality of cold working stages, effected at a temperature of below 650 DEG C, and the tubes then being subjected to a final anneal at a temperature below 600 DEG C. The resultant thin-walled tubing has a microstructure of homgeneously dispersed niobium particles of a size less than about 800 angstroms, with the tubing exhibiting excellent corrosion resistance.
IPC 1-7
IPC 8 full level
B21C 37/08 (2006.01); C22F 1/00 (2006.01); C22F 1/18 (2006.01)
CPC (source: EP KR)
C21D 9/08 (2013.01 - KR); C22F 1/186 (2013.01 - EP)
Designated contracting state (EPC)
BE FR GB IT
DOCDB simple family (publication)
EP 0198570 A2 19861022; EP 0198570 A3 19871014; EP 0198570 B1 19900829; ES 551049 A0 19870901; ES 8708021 A1 19870901; JP S61210166 A 19860918; KR 860005894 A 19860816; KR 930009986 B1 19931013
DOCDB simple family (application)
EP 86300259 A 19860116; ES 551049 A 19860120; JP 1180286 A 19860122; KR 860000376 A 19860122