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

页码：56 / 60

页数：5

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