期刊
SCRIPTA MATERIALIA
卷 159, 期 -, 页码 89-93出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.09.017
关键词
Additive manufacturing; Selective laser melting; Texture; Lamellae; 316L stainless steel
类别
资金
- Council for Science, Technology and Innovation (CSTI)
- Cross-Ministerial Strategic Innovation Promotion Program (SIP)
- New Energy and Industrial Technology Development Organization (NEDO)
- Japan Society for Promotion of Science [JP18H05254, JP18H03844]
- Iron and Steel Institute of Japan (ISIJ)
We first developed a unique crystallographic lamellar microstructure (CLM), in which two differently oriented grains appear alternately, in a 316L stainless steel specimen via selective laser melting technology. The CLM was composed of major < 011 > grains and minor < 001 > grains aligned along the build direction, which stemmed from vertical and approximately +/- 45 degrees inclined columnar cells formed in the central and side parts of melt-pools, respectively. The development of CLM was found to largely improve the material properties via the strengthening of the product, simultaneously showing superior corrosion resistance to commercially obtained specimens. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd.
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