Influence of volume fraction of component materials and interlayer bond strength on fracture toughness of multi-layer Al 6090-25 vol % SiCp and Al 5182 laminates

Conference · Mon Nov 01 04:00:00 EST 1993

OSTI ID:10125816

Syn, C K; Stoner, S; Lesuer, D R ^[1]; Sherby, O D ^[2]

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1. Lawrence Livermore National Lab., CA (United States)
2. Stanford Univ., CA (United States). Dept. of Materials Science and Engineering

Multilayer laminates of Al 6090/SiC/25p MMC and Al 5182 were prepared by hot pressing alternating layers of the component materials at 450{degree}C in an argon gas atmosphere. Tensile properties, interlayer normal and shear bond strengths, and fracture toughness were measured in the T6-treated and untreated conditions. Fracture toughness was also measured as a function of the volume fraction of the MMC component. Yield and tensile strengths increased substantially by the T6 treatment while the total-elongation and interlayer bond strengths decreased even more substantially. Fracture toughness, on the other hand, did not change appreciably by the T6 treatment. The fracture toughness increased perceptibly with an increase in the volume percent of the MMC component.

• 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: 10125816
• Report Number(s): UCRL-JC--115698; CONF-940204--5; ON: DE94007141
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603
ALUMINIUM
COMPOSITE MATERIALS
FRACTURE PROPERTIES
INTERFACES
LAMELLAE
LAYERS
MECHANICAL PROPERTIES
SILICON CARBIDES
TENSILE PROPERTIES
THERMOMECHANICAL TREATMENTS