期刊
MATERIALS LETTERS
卷 224, 期 -, 页码 22-25出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.04.052
关键词
High-entropy alloys; Additive manufacturing; Laser powder bed fusion; Rapid cooling; Competitive growth; Epitaxial growth
资金
- EPSRC [EP/K503733/1]
- AWE Plc.
- EPSRC [EP/N007638/1] Funding Source: UKRI
study, single-layer and multi-layer builds were produced by laser powder bed fusion to study microstructure formation in rapid cooling and its evolution during repeated metal deposition. CoCrFeMnNi showed good printability with high consolidation and uniform high hardness. It is shown that microstructure in the printed alloy is governed by epitaxial growth and competitive grain growth. As a consequence, a bi-directional scanning pattern without rotation in subsequent layers generates a dominant alternating sequence of two crystal orientations. (C) 2018 The Authors. Published by Elsevier B.V.
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