Creep behavior of a closed-cell aluminum foam

作者: E.W. Andrews , J.-S. Huang , L.J. Gibson

DOI: 10.1016/S1359-6454(99)00161-5

关键词: HoneycombStrain rateMicrostructureMaterials scienceActivation energyComposite materialPower lawHoneycomb structureMetal foamCreep

摘要: The results of creep tests on a closed-cell aluminum foam (Alporas) are reported. At low stresses and temperatures, the behavior is well described by existing models for foams. high power law exponent increases from about 4 to 15 activation energy 100 450 kJ/mol. increase in may be related damage; finite element damage model two-dimensional honeycomb gives consistent with measured behavior.

参考文章(9)
Howard Ensign Evans, Mechanisms of creep fracture ,(1984)
William R. Heller, Iain Finnie, Creep of engineering materials ,(1959)
H. Burt, J. P. Dennison, B. Wilshire, Friction stress measurements during creep of Nimonic 105 Metal science. ,vol. 13, pp. 295- 300 ,(1979) , 10.1179/MSC.1979.13.5.295
Y. Sugimura, J. Meyer, M.Y. He, H. Bart-Smith, J. Grenstedt, A.G. Evans, On the mechanical performance of closed cell Al alloy foams Acta Materialia. ,vol. 45, pp. 5245- 5259 ,(1997) , 10.1016/S1359-6454(97)00148-1
H Bart-Smith, A.-F Bastawros, D.R Mumm, A.G Evans, D.J Sypeck, H.N.G Wadley, Compressive deformation and yielding mechanisms in cellular Al alloys determined using X-ray tomography and surface strain mapping Acta Materialia. ,vol. 46, pp. 3583- 3592 ,(1998) , 10.1016/S1359-6454(98)00025-1
A.E. Simone, L.J. Gibson, Aluminum foams produced by liquid-state processes Acta Materialia. ,vol. 46, pp. 3109- 3123 ,(1998) , 10.1016/S1359-6454(98)00017-2
D. Sidey, B. Wilshire, Mechanisms of Creep and Recovery in Nimonic 80A Metal Science Journal. ,vol. 3, pp. 56- 60 ,(1969) , 10.1179/MSC.1969.3.1.56
R. Lagneborg, B. Bergman, The stress/creep rate behaviour of precipitation-hardened alloys Metal science. ,vol. 10, pp. 20- 28 ,(1976) , 10.1179/030634576790431462