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research
Ductility enhancement of layered stainless steel with nanograined interface layers
Authors
X Guo
AK Soh
GJ Weng
Publication date
1 January 2012
Publisher
'Elsevier BV'
Doi
Cite
Abstract
Combination of surface mechanical attrition treatment (SMAT) and co-rolling is a promising experimental methodology to design metals with high strength and high ductility. Recent results have revealed that brittle nanograined interface layer (NGIL) can enhance the ductility of the co-rolled SMATed stainless steel (SS). In the present study, the cohesive finite element method is used to show that the SS ductility is significantly enhanced with the increase of fracture toughness of coarse-grained layers and failure strain of NGIL. However the ductility will not increase if the NGIL thickness goes beyond 60 μm. © 2011 Elsevier B.V. All rights reserved.postprin
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Last time updated on 01/06/2016