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Microstructure, mechanical and tribological properties of CoCrFeNi high-entropy alloy fabricated by different preparing processes
Li, Wen-jing1; An, Jin-hua1; Zhang, Li1; Tu, Jian1; Wang, Lin-zhi2; Zheng, Shu-kun1,2; Zhou, Zhi-ming1
2023-03-15
摘要The corresponding performance of CoCrFeNi high-entropy alloy (HEA) under different preparing processes can meet the different engineering application requirement. The microstructure, mechanical and tribological prop-erties of CoCrFeNi HEA fabricated by melting-casting (MC), thermomechanical treatment (TMT) and selective laser melting (SLM) are systematically investigated in this work. The results indicate the optimal strength-ductility synergy and wear ability in as-TMTed sample with fine grains decorated with profuse twins. The excellent ductility (75 %) in as-MCed sample with coarse grains while the superior yield strength (472.27 MPa) in as-SLMed sample with nanosized cellular substructure are confirmed. The micropores in as-SLMed sample lead to the poor tribological performance.
关键词High-entropy alloy Selective laser melting Microstructure Wear and tribology
DOI10.1016/j.matlet.2022.133760
发表期刊MATERIALS LETTERS
ISSN0167-577X
卷号335页码:4
通讯作者Tu, Jian(tujian@cqut.edu.cn)
收录类别SCI
WOS记录号WOS:000916948100001
语种英语