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Title: Fracture behavior of laminated discontinuously reinforced aluminum material

Laminated metallic composites are being developed for applications which require high specific stiffness and fracture resistance. Recent work with laminated discontinuously reinforced aluminum (DRA) materials has demonstrated the potential for marked improvements in stable crack growth resistance via extrinsic toughening. The purpose of this work is to compare the fracture mechanisms and fracture resistance of laminated DRA materials to unlaminated DRA materials. In particular, the production of extensive stable crack growth and the associated improvement in damage tolerance in DRA laminates is documented.
Authors:
 [1] ;  [2] ; ;  [3] ;  [4]
  1. Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Materials Science and Engineering|[Lawrence Livermore National Lab., CA (United States)
  2. Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Materials Science and Engineering
  3. Lawrence Livermore National Lab., CA (United States)
  4. Aluminum Co. of America, Alcoa Center, PA (United States). Alcoa Technical Center
Publication Date:
OSTI Identifier:
10176195
Report Number(s):
UCRL-JC--117162; CONF-9409179--3
ON: DE94017307
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: 4. international conference of aluminum alloys,Atlanta, GA (United States),11-16 Sep 1994; Other Information: PBD: May 1994
Research Org:
Lawrence Livermore National Lab., CA (United States)
Sponsoring Org:
USDOE, Washington, DC (United States)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; REINFORCED MATERIALS; FRACTURE PROPERTIES; LAYERS; LAMELLAE; ALUMINIUM; CRACK PROPAGATION; SILICON CARBIDES 360603; MECHANICAL PROPERTIES