Grain refinement and localized amorphization of additively manufactured high-entropy alloy matrix composites reinforced by nano ceramic particles via selective-laser-melting/remelting

被引：55
|
作者：
Li, Bo [1 ]
Zhang, Lei [1 ]
Yang, Bin [1 ]
机构：
[1] East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China
来源：
COMPOSITES COMMUNICATIONS | 2020年 / 19卷
关键词：
Additive manufacturing; High-entropy alloy matrix composite; Grain refinement; Amorphous; MICROSTRUCTURE;
D O I：
10.1016/j.coco.2020.03.001
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Nano TiN-particle reinforced CoCrFeMnNi high-entropy alloy (HEA) matrix composites were additively manufactured via selective laser melting (SLM) and that with a remelting laser-scan strategy (RLSS). The RLSS process promoted the reinforcement-dispersity and thus further refined the HEA matrix grains. The generated hybrid amorphous-crystalline microstructure was benefited by RLSS-SLM to enhance strength and regulate plasticity. The dispersion behaviors and effects of nano TiN-particles were expounded. The amorphous formation mechanism was also discussed.
引用
收藏
页码：56 / 60
页数：5
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