Global Patent Index - EP 1183401 A4

EP 1183401 A4 2002-09-18 - IN-SITU DUCTILE METAL/BULK METALLIC GLASS MATRIX COMPOSITES FORMED BY CHEMICAL PARTITIONING

Title (en)

IN-SITU DUCTILE METAL/BULK METALLIC GLASS MATRIX COMPOSITES FORMED BY CHEMICAL PARTITIONING

Title (de)

IN-SITU DUKTILER METALLISCHER GLAS-MATRIX-VERBUNDWERKSTOFF HERGESTELLT DURCH CHEMISCHE TRENNUNG

Title (fr)

COMPOSITES DE METAL DUCTILE IN SITU/ MATRICE EN VERRE METALLIQUE EN MASSE FORMES PAR PARTAGE CHIMIQUE

Publication

EP 1183401 A4 (EN)

Application

EP 00959118 A

Priority

  • US 0011790 W
  • US 13197399 P

Abstract (en)

[origin: WO0068469A2] A composite metal object comprises ductile crystalline metal particles in an amorphous metal matrix. An alloy is heated above its liquidus temperature. Upon cooling from the high temperature melt, the alloy chemically partitions, forming dendrites in the melt. Upon cooling the remaining liquid below the glass transition temperature it freezes to the amorphous state, producing a two-phase microstructure containing crystalline particles in an amorphous metal matrix. The ductile metal particles have a size in the range of from 0.1 to 15 micrometers and spacing in the range of from 0.1 to 20 micrometers. Preferably, the particle size is in the range of from 0.5 to 8 micrometers and spacing is in the range of from 1 to 10 micrometers. The volume proportion of particles is in the range of from 5 to 50 % and preferably 15 to 35 %. Differential cooling can produce oriented dendrites of ductile metal phase in an amorphous matrix. Examples are given in the Zr-Ti-Cu-Ni-Be alloy bulk glass forming system with added niobium.

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

C22C 16/00; C22C 45/10

IPC 8 full level (invention and additional information)

C22C 47/00 (2006.01); C22C 16/00 (2006.01); C22C 33/00 (2006.01); C22C 45/10 (2006.01); C22C 49/02 (2006.01); C22C 111/00 (2006.01)

CPC (invention and additional information)

C22C 45/10 (2013.01); C22C 33/003 (2013.01)

Citation (search report)

  • [XA] US 5368659 A 19941129 - PEKER ATAKAN [US], et al
  • [XA] GILBERT C J ET AL: "FRACTURE TOUGHNESS AND FATIGUE-CRACK PROPAGATION IN A ZR-TI-NI-CU-BE BULK METALLIC GLASS", APPLIED PHYSICS LETTERS, AMERICAN INSTITUTE OF PHYSICS. NEW YORK, US, vol. 71, no. 4, 28 July 1997 (1997-07-28), pages 476 - 478, XP000698249, ISSN: 0003-6951
  • See also references of WO 0068469A3

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 0068469 A2 20001116; WO 0068469 A3 20010125; AU 7049300 A 20001121; EP 1183401 A2 20020306; EP 1183401 A4 20020918; EP 1183401 B1 20110706; JP 2002544386 A 20021224; JP 2009263797 A 20091112; JP 2014088622 A 20140515; JP 5462537 B2 20140402; JP 6092763 B2 20170308

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