期刊
SCRIPTA MATERIALIA
卷 92, 期 -, 页码 19-22出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2014.07.019
关键词
Metastable austenitic steel; Stacking fault energy; Transmission electron microscopy (TEM); Lattice parameter
类别
资金
- Advanced Steel Processing and Products Research Center (ASPPRC)
- National Science Foundation CAREER Award [0955236]
- US Department of Energy Office of Science Graduate Fellowship Award
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0955236] Funding Source: National Science Foundation
The influence of Si and Al on the lattice parameter and stacking fault energy (SFE) of austenitic steel was studied. X-ray diffraction indicated that 2.5 wt.% Al alloying increased the austenite lattice parameter by 1.41 x 10(-3) nm, whereas 2.5 wt.% Si alloying had little effect. Partial dislocation separation measurements from weak-beam dark-field images indicated that 2.5 wt.% Al alloying increased the SFE by 12-17 mJ m(-2) and 2.5 wt.% Si alloying decreased the SFE by 6-7 mJ m(-2). (C) 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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