期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 146, 期 1-2, 页码 50-57出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2014.02.041
关键词
Carbides; Precipitation; Tomography; Metals
资金
- ORNL's Shared Research Equipment (ShaRE)
- Office of Basic Energy Sciences, Scientific User Facilities Division, U.S. Department of Energy
- Research Fund for Coal and Steel [RFS-PR-11019]
- Spanish Ministry of Science and Innovation [MAT2010-15330, IPT-2012-0320-420000]
The nature of different carbides formed during the lower bainite reaction at different transformation temperatures was determined by atom probe tomography in three steels with different carbon and silicon contents. It is known that steel composition and temperature alter the carbide precipitation sequence during low-temperature bainite formation. However, present results confirm that dislocations in lower bainite that are more prominent at the lower the transformation temperature, trap a substantial amount of carbon and hence, can influence the carbide precipitation sequence and, in particular, can determine where epsilon-carbide forms before the growth of cementite. (C) 2014 Elsevier B.V. All rights reserved.
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