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Twins Observation During Deformation of Fe28Mn3Si3Al TWIP Steel |
MI Zhenli,TANG Di,JIANG Haitao,DAI Yongjuan,WANG Haiquan |
National Engineering Research Center for Advanced Rolling Technology, University of Science and Technology Beijing, Beijing 100083, China |
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Abstract The microstructure of Twinning Induced Plasticity (TWIP) steel during tensile deformation was investigated with SEM and TEM. The results showed that the twins deformed firstly with workhardening, then other grains turn to favorable orientation to complete further deformation. This deformation mechanism of twinning induced plasticity provides excellent elongation with nonecking phenomenon. The orientations of first deformed twins are transferred to annealing twin’s hereditarily. The twintwin interaction, the twindislocation interaction and the twinsliding interaction play an important role during deformation.
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Received: 01 January 1900
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