High ductility of ultrafine-grained steel via phase transformation

被引：0

作者：

Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, United States ^{[1
]}

不详 ^{[2
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]}

机构：

[1] Department of Materials Science and Engineering, University of Tennessee, Knoxville

[2] Neutron Scattering Science Division, Oak Ridge National Laboratory, Oak Ridge

[3] Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge

[4] Materials Science and Technology Division, Los Alamos National Laboratory, Los Alamos

[5] Advanced Photon Source, Argonne National Laboratory, Argonne

[6] Department of Metallurgical Engineering, Yonsei University

来源：

J Mater Res | 2008年 / 6卷 / 1578-1586期

基金：

美国国家科学基金会;

关键词：

Ductility;

D O I：

10.1557/jmr.2008.0213

中图分类号：

学科分类号：

摘要：

There is often a tradeoff between strength and ductility, and the low ductility of ultrafine-grained (UFG) materials has been a major obstacle to their practical structural applications despite their high strength. In this study, we have achieved a ∼40% tensile ductility while increasing the yield strength of FeCrNiMn steel by an order of magnitude via grain refinement and deformation-induced martensitic phase transformation. The strain-rate effect on the inhomogeneous deformation behavior and phase transformation was studied in detail. © 2008 Materials Research Society.

引用

页码：1578 / 1586

页数：8

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