Effects of extended overaging on fracture and fatigue of particulate reinforced aluminum alloy composites

G. Liu, Jian Ku Shang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Metal matrix composites are being considered for many elevated temperature applications where the matrix microstructure is likely to change with time. The effects of long-term exposure at the elevated temperature on the fracture toughness and fatigue crack growth behavior are examined in a cast particulate reinforced aluminum alloy composite. Significant reductions in fracture toughness and fatigue crack growth threshold were found to occur following extended overaging of the composite. These reductions are explained in terms of microstructural evolution and the change in the matrix flow property.

Original languageEnglish (US)
Title of host publicationFirst International Conference on Microstructures and Mechanical Properties of Aging Materials
EditorsP.K. Liaw, R. Viswanathan, K.L. Murty, E.P. Simonen, D. Frear
PublisherPubl by Minerals, Metals & Materials Soc (TMS)
Pages475-479
Number of pages5
ISBN (Print)0873392078
StatePublished - 1993
EventFirst International Conference on Microstructures and Mechanical Properties of Aging Materials - Chicago, IL, USA
Duration: Nov 2 1992Nov 5 1992

Other

OtherFirst International Conference on Microstructures and Mechanical Properties of Aging Materials
CityChicago, IL, USA
Period11/2/9211/5/92

ASJC Scopus subject areas

  • Engineering(all)

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