Processing and mechanical properties of laminated metal composites of Al 6090-25 vol % SiC{sub p} and Al 5182
- Lawrence Livermore National Lab., CA (United States)
- Stanford Univ., CA (United States). Dept. of Materials Science and Engineering
Multi-layer laminate metal composites (LMCs) containing equal volume percent of Al 5182 and Al 6090--25 Vol.% SiC{sub p} were made. The laminates were prepared by hot pressing alternate layers to a fourth of initial height at 450C in argon gas atmosphere. Some laminates were warm rolled by repeatedly heating to 450C and rolling. The large plastic deformation ensured good bonding between layers. Tensile properties, fracture toughness, and damping capacity of these deformation-bonded laminates were measured. Surface descaling prior to lamination enhanced the tensile properties and toughness substantially. Post-lamination T6 heat treatment increased tensile yield and flow stress and reduced the ductility. Interfaces and dissimilar properties of the component materials enhanced the damping capacity. Yield and tensile strengths were slightly lower than values calculated from rule-of-averages based on the component materials. Toughness and damping capacity were, on the other hand, far superior to those of component materials. Ductility of the laminates was increased as the layer thickness was reduced.
- 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:
- 10190550
- Report Number(s):
- UCRL-JC-113468; CONF-9306274-1; ON: DE94001070
- Resource Relation:
- Conference: International symposium on light materials for transportation systems,Kyongju (Korea, Republic of),20-23 Jun 1993; Other Information: PBD: 19 Mar 1993
- Country of Publication:
- United States
- Language:
- English
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