Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 532, Issue -, Pages 500-504Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2011.10.116
Keywords
Nanoindentation; High Mn steel; Elastic modulus; Mechanical twinning; Surface orientation
Categories
Funding
- Fundamental R&D Program for Core Technology of Materials
- Ministry of Commerce, Industry and Energy, Republic of Korea
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The dependencies of indentation modulus and yielding behavior on the crystallographic orientation in a high Mn twinning induced plasticity (TWIP) steel were systematically investigated by spherical nanoindentation. A series of nanoindentation experiments revealed that the values of the plane-strain modulus and maximum shear stress at the pop-in increased with an order of (001), (101), and (111) grains. Mechanical twins were only observed in the indented (001) grains, as was expected from Schmid factor for twinning in fcc crystals. (C) 2011 Elsevier B.V. All rights reserved.
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