期刊
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
卷 217, 期 -, 页码 278-285出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jmatprotec.2014.11.027
关键词
High manganese austenitic steel; Annealing temperature; Microstructure; Mechanical property
资金
- National High Technology Research and Development Program of China [2012AA03A508]
By using scanning electron microscope (SEM) equipped with electron back-scattered diffraction (EBSD), transmission electron microscope (TEM) and room temperature tensile deformation test, the mechanical properties and microstructure evolution of a high manganese austenitic twinning-induced plasticity (TWIP) steel 25Mn-3Cr-3Al-0.3C-0.01N were investigated for the cold-rolled sheets annealed at different temperatures. The results show that annealing temperature has a tremendous effect on grain size and mechanical properties of the cold rolled high manganese austenitic TWIP steel. The features of the annealed grain microstructures of this steel can be characterized by coincidence site lattice (CSL) Sigma 3 at grain boundary. The occurrence frequency of Sigma 3 grain boundary and deformation twins in this steel has a close relation to annealing temperature. The microstructure evolution at different strain levels was finally described for the annealed and tensile deformed high manganese austenitic steel. (C) 2014 Elsevier B.V. All rights reserved.
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