期刊
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
卷 51, 期 7, 页码 3504-3517出版社
SPRINGER
DOI: 10.1007/s11661-020-05771-8
关键词
-
资金
- European Space Agency [Bl-inter 09_473220]
- National Natural Science Foundation of China [51571056, 51690164]
- Shanghai Science and Technology Committee Grant [19XD1401600, 19010500300]
Microstructure, crystallographic orientation and mechanical properties in the AlCoCrFeNi2.1 eutectic high-entropy alloy (EHEA) formed using magnetic field-assisted directional solidification were studied experimentally. An aligned eutectic structure formed using magnetic field-assisted directional solidification. Both eutectic lamellar spacing and eutectic cellular spacing decreased with the increasing growth speed and the application of a magnetic field. The crystallographic orientation relationship between FCC phase and BCC (B2) phase in AlCoCrFeNi2.1 EHEAs was investigated and only one orientation relationship, {110}(BCC)//{111}(FCC)< 11 over bar & rang;(FCC) was found. Significantly, the magnetic field-assisted directionally solidified AlCoCrFeNi2.1 EHEA possessed the highest elongation to failure (epsilon(f)) relative to the same EHEA series reported so far. The epsilon(f) reached about 45 pct with an ultimate tensile strength of similar to 1058 MPa. This enhancement in mechanical properties can be attributed to the microstructural modification caused by the directional solidification and/or the magnetic field, highlighting an effective pathway to achieve superior mechanical properties in EHEAs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据