期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2014.01.002
关键词
Micropillar compression; Size effect; Mechanical properties; Focused ion beam; Cast duplex stainless steel
类别
资金
- National Science and Technology Major Project of the Ministry of Science and Technology of China [2011ZX04014-052, 2012ZX04012011]
- Doctoral Fun of Ministry of Education of China [20130002110012]
- Chinese Scholarship Council
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 mu m 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. (C) 2014 Elsevier B.V. All rights reserved.
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