Ductility enhancement of layered stainless steel with nanograined interface layers

被引：28

作者：

Guo, X. ^{[1
,2
,3
]}

Weng, G. J. ^{[3
,4
]}

Soh, A. K. ^{[3
]}

机构：

[1] Tianjin Univ, Sch Mech Engn, Dept Mech, Tianjin 300072, Peoples R China

[2] Tianjin Key Lab Nonlinear Dynam & Chaos Control, Tianjin 300072, Peoples R China

[3] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China

[4] Rutgers State Univ, Dept Mech & Aerosp Engn, New Brunswick, NJ 08903 USA

来源：

COMPUTATIONAL MATERIALS SCIENCE | 2012年 / 55卷

基金：

中国国家自然科学基金;

关键词：

Nanograined interface layer; Mechanical attrition treatment; Interface; Enhanced ductility; Cohesive finite element method; STRENGTH; FRACTURE; NANOCRYSTALLINE;

D O I：

10.1016/j.commatsci.2011.11.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 mu m. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：350 / 355

页数：6

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