Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 480, Issue 1-2, Pages 434-438Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2007.07.052
Keywords
AEREX (TM) 350; cold work; aging; shear band; superalloy
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The influence of different amounts of cold work on the evolution of microstructure during subsequent aging of AEREX (TM) 350 superalloy was investigated. Simple compression testing was used to impose desired plastic strain while microhardness testing, XRD, SEM and TEM techniques were used to characterize the response of the alloy following aging treatment. It was found that high levels of cold work followed by aging resulted in a drastic increase in the formation of Widmanstdttan eta phase and incidence of shear bands in the microstructure. Based on microstructural data, the effect of plastic strain on eta phase formation and the physical origin of the localized shear bands are discussed. (c) 2007 Elsevier B.V. All rights reserved.
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