Mechanical characterization of microconstituents in a cast duplex stainless steel by micropillar compression

En Yu Guo; Hu Xiao Xie; Sudhanshu S. Singh; Antony Kirubanandham; Tao Jing; Nikhilesh Chawla

doi:10.1016/j.msea.2014.01.002

Mechanical characterization of microconstituents in a cast duplex stainless steel by micropillar compression

En Yu Guo, Hu Xiao Xie, Sudhanshu S. Singh, Antony Kirubanandham, Tao Jing, Nikhilesh Chawla

Research output: Contribution to journal › Article › peer-review

43 Scopus citations

Abstract

The mechanical properties of individual constituent in a cast austenitic-ferritic stainless steel were studied using uniaxial micropillar compression tests. The results of compression tests of the micropillars with the diameter ranging from 1 to 5 and 1 to 10. μm for ferrite and austenite, respectively, reveal that the strength of both austenite and ferrite increases with a decrease in sample size. The compression results also confirm that the strength of ferrite phase is higher than the austenite. The average yield stress value of ferrite is approximately 200. MPa higher than that of the austenite phase with the same sample size. The critical resolved shear stress (CRSS) was also calculated based on pillar compression and electron backscatter diffraction (EBSD) results.

Original language	English (US)
Pages (from-to)	98-105
Number of pages	8
Journal	Materials Science and Engineering A
Volume	598
DOIs	https://doi.org/10.1016/j.msea.2014.01.002
State	Published - Mar 26 2014

Keywords

Cast duplex stainless steel
Focused ion beam
Mechanical properties
Micropillar compression
Size effect

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.msea.2014.01.002

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title = "Mechanical characterization of microconstituents in a cast duplex stainless steel by micropillar compression",

abstract = "The mechanical properties of individual constituent in a cast austenitic-ferritic stainless steel were studied using uniaxial micropillar compression tests. The results of compression tests of the micropillars with the diameter ranging from 1 to 5 and 1 to 10. μm for ferrite and austenite, respectively, reveal that the strength of both austenite and ferrite increases with a decrease in sample size. The compression results also confirm that the strength of ferrite phase is higher than the austenite. The average yield stress value of ferrite is approximately 200. MPa higher than that of the austenite phase with the same sample size. The critical resolved shear stress (CRSS) was also calculated based on pillar compression and electron backscatter diffraction (EBSD) results.",

keywords = "Cast duplex stainless steel, Focused ion beam, Mechanical properties, Micropillar compression, Size effect",

author = "Guo, {En Yu} and Xie, {Hu Xiao} and Singh, {Sudhanshu S.} and Antony Kirubanandham and Tao Jing and Nikhilesh Chawla",

note = "Funding Information: We acknowledge financial support for this work from the National Science and Technology Major Project of the Ministry of Science and Technology of China , under Project nos. 2011ZX04014-052 and 2012ZX04012011 ; and Doctoral Fun of Ministry of Education of China , under Grant no. 20130002110012 . We acknowledge use of the focus ion beam instrument at the Leroy Eyring Center for Solid State Science (LE-CSSS). E.-Y. G also acknowledges the Chinese Scholarship Council for financial support during his stay at Arizona State University.",

year = "2014",

month = mar,

day = "26",

doi = "10.1016/j.msea.2014.01.002",

language = "English (US)",

volume = "598",

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journal = "Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing",

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AU - Guo, En Yu

AU - Xie, Hu Xiao

AU - Singh, Sudhanshu S.

AU - Kirubanandham, Antony

AU - Jing, Tao

AU - Chawla, Nikhilesh

N1 - Funding Information: We acknowledge financial support for this work from the National Science and Technology Major Project of the Ministry of Science and Technology of China , under Project nos. 2011ZX04014-052 and 2012ZX04012011 ; and Doctoral Fun of Ministry of Education of China , under Grant no. 20130002110012 . We acknowledge use of the focus ion beam instrument at the Leroy Eyring Center for Solid State Science (LE-CSSS). E.-Y. G also acknowledges the Chinese Scholarship Council for financial support during his stay at Arizona State University.

PY - 2014/3/26

Y1 - 2014/3/26

N2 - The mechanical properties of individual constituent in a cast austenitic-ferritic stainless steel were studied using uniaxial micropillar compression tests. The results of compression tests of the micropillars with the diameter ranging from 1 to 5 and 1 to 10. μm for ferrite and austenite, respectively, reveal that the strength of both austenite and ferrite increases with a decrease in sample size. The compression results also confirm that the strength of ferrite phase is higher than the austenite. The average yield stress value of ferrite is approximately 200. MPa higher than that of the austenite phase with the same sample size. The critical resolved shear stress (CRSS) was also calculated based on pillar compression and electron backscatter diffraction (EBSD) results.

AB - The mechanical properties of individual constituent in a cast austenitic-ferritic stainless steel were studied using uniaxial micropillar compression tests. The results of compression tests of the micropillars with the diameter ranging from 1 to 5 and 1 to 10. μm for ferrite and austenite, respectively, reveal that the strength of both austenite and ferrite increases with a decrease in sample size. The compression results also confirm that the strength of ferrite phase is higher than the austenite. The average yield stress value of ferrite is approximately 200. MPa higher than that of the austenite phase with the same sample size. The critical resolved shear stress (CRSS) was also calculated based on pillar compression and electron backscatter diffraction (EBSD) results.

KW - Cast duplex stainless steel

KW - Focused ion beam

KW - Mechanical properties

KW - Micropillar compression

KW - Size effect

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Mechanical characterization of microconstituents in a cast duplex stainless steel by micropillar compression

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