Toughened austenitic stainless steel by surface severe plastic deformation

被引：27
|
作者：
Fan, Jitang [1 ,2 ]
Fu, Tao [2 ,3 ]
机构：
[1] Delft Univ Technol, Fac Civil Engn & Geosci, Sect Struct Mech, NL-2600 GA Delft, Netherlands
[2] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
[3] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 552卷
关键词：
Steels; Mechanical properties; Nanocrystalline microstructure; Martensitic phase transformation; Toughness mechanism; AL-MG ALLOY; HIGH-PRESSURE TORSION; BONDING ARB PROCESS; BIMODAL GRAIN-SIZE; MICROSTRUCTURAL EVOLUTION; NANOSTRUCTURED MATERIALS; MECHANICAL-PROPERTIES; DUCTILITY; TENSILE; NANOCRYSTALLINE;
D O I：
10.1016/j.msea.2012.05.052
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Deformation-induced nanocrystallization and martensite transformation were induced in the single surface of coarse-grained austenitic stainless steel sheet by severe plastic deformation, which formed the gradient, multiscale grain sizes distribution and composite microstructures of austenite and martensite. Resultant mechanical properties were optimized with improved yield strength of 1000 MPa (from the 300 MPa), large elongation to failure of 50% and good strain hardenability. Finally, observations on the deformation and fracture behavior clarify the inherent toughness mechanism. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：359 / 363
页数：5
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