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2016
Journal Article
Titel

Fracture, fatigue, and creep of nanotwinned metals

Abstract
As a relatively new class of hierarchically structured materials, nanotwinned (NT) metals exhibit an exceptional combination of high strength, good ductility, large fracture toughness, remarkable fatigue resistance, and creep stability. This article reviews current studies on fracture, fatigue, and creep of NT metals, with an emphasis on the fundamental deformation and failure mechanisms. We focus on the complex interactions among cracks, dislocations, and twin boundaries, the influence of microstructure, twin size, and twinning/detwinning on damage evolution, and the contribution of nanoscale twins to fatigue and creep under indentation and irradiation conditions. The article also includes critical discussions on the effects of twin thickness and grain size on the fracture toughness, fatigue resistance, and creep stability of NT metals.
Author(s)
Li, X.
Dao, M.
Eberl, C.
Hodge, A.M.
Gao, H.
Zeitschrift
MRS Bulletin
Funder
National Science Foundation NSF
Thumbnail Image
DOI
10.1557/mrs.2016.65
Language
English
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Fraunhofer-Institut für Werkstoffmechanik IWM
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