Global Patent Index - EP 1002882 A1

EP 1002882 A1 2000-05-24 - A beta titanium alloy

Title (en)

A beta titanium alloy

Title (de)

Legierung auf Titan-Basis mit Beta-Stuktur

Title (fr)

Une alliage de titane de phase beta

Publication

EP 1002882 A1 (EN)

Application

EP 99308274 A

Priority

GB 9824611 A

Abstract (en)

A beta titanium alloy comprises 25wt% vanadium, 15wt% chromium, 2wt% aluminium, up to 0.15wt% oxygen, 0.1 to 0.3wt% carbon and the balance titanium plus incidental impurities. The carbon is present in the form of titanium carbide precipitates distributed throughout the beta titanium alloy matrix, the titanium carbide precipitates refine the grain size of the beta titanium alloy matrix and remove oxygen from the beta titanium alloy matrix to reduce precipitation of alpha titanium in the beta titanium alloy matrix to increase the ductility of the beta titanium alloy. The alloy is useful for gas turbine engine compressor blades (10), compressor vanes, compressor casings etc.

IPC 1-7 (main, further and additional classification)

C22C 14/00

IPC 8 full level (invention and additional information)

C22C 14/00 (2006.01)

CPC (invention and additional information)

C22C 14/00 (2013.01)

Citation (search report)

  • [A] US 5759484 A 19980602 - KASHII HIDEAKI [JP], et al
  • [A] US 5176762 A 19930105 - BERCZIK DOUGLAS M [US]
  • [A] LI, Y.G. (UNIVERSITY OF BIRMINGHAM (UK)) ET AL: "Order-disorder transformation and deformation structure in beta TiVCrAl alloys.", ELECTRON MICROSCOPY 1998. VOLUME 2. MATERIALS SCIENCE 1 (1998), 59-60, PHOTOMICROGRAPHS, 3 REF. INSTITUTE OF PHYSICS PUBLISHING. TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, BS1 6NX, UK CONFERENCE: 14TH INTERNATIONAL CONGRESS ON ELECTRON MICROSCOPY, CANCUN,, XP002128835
  • [A] LI, Y.G. (UNIVERSITY OF BIRMINGHAM (ENGLAND)) ET AL: "Effect of aluminium on ordering of highly stabilised beta -Ti-V-Cr alloys", MATERIALS SCIENCE AND TECHNOLOGY (AUG. 1998) 14, (8), 732-737, PHOTOMICROGRAPHS, DIFFRACTION PATTERNS, 15 REF. ISSN: 0267-0836, XP002128836
  • [A] LI, Y.G. (UNIVERSITY OF BIRMINGHAM (ENGLAND)) ET AL: "Structure and stability of precipitates in 500 deg C exposed Ti-25V-15Cr-xAl alloys.", ACTA MATERIALIA (1998) 46, (16), 5777-5794, PHOTOMICROGRAPHS, DIFFRACTION PATTERNS, NUMERICAL DATA, GRAPHS, 11 REF. ISSN: 1359-6454, XP002128837

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

EP 1002882 A1 20000524; EP 1002882 B1 20021211; DE 69904430 D1 20030123; DE 69904430 T2 20031030; GB 9824611 D0 19990106; US 2002108682 A1 20020815; US 2006021680 A1 20060202; US 2010047076 A1 20100225

INPADOC legal status


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