Fracture behavior of laminated discontinuously reinforced aluminum material

Conference · Sun May 01 04:00:00 EDT 1994

OSTI ID:10176195

Osman, T M ^[1]; Lewandowski, J J ^[1]; Lesuer, D R; Syn, C K ^[2]; Hunt, Jr, W H ^[3]

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1. Case Western Reserve Univ., Cleveland, OH (United States). Dept. of Materials Science and Engineering
2. Lawrence Livermore National Lab., CA (United States)
3. Aluminum Co. of America, Alcoa Center, PA (United States). Alcoa Technical Center

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.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 10176195
• Report Number(s): UCRL-JC--117162; CONF-9409179--3; ON: DE94017307
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603
ALUMINIUM
CRACK PROPAGATION
FRACTURE PROPERTIES
LAMELLAE
LAYERS
MECHANICAL PROPERTIES
REINFORCED MATERIALS
SILICON CARBIDES