FeCoNiCr0.5Alx High-Entropy Alloys with Dual-Phase Solidification Microstructure and High Compressive Properties

被引：0
|
作者：
Tao Lu
Wenke Chai
Ting Dai
Ye Pan
机构：
[1] Southeast University,School of Materials Science and Engineering, Jiangsu Key Laboratory of Advanced Metallic Materials
来源：
JOM | 2019年 / 71卷
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摘要：
FeCoNiCr0.5Alx high-entropy alloys (HEAs) have been prepared via the self-propagating high-temperature casting method and the phase formation mechanism and related compressive properties systematically investigated. The FeCoNiCr0.5Alx HEAs showed dual-phase nature but complex as-cast microstructure depending on the Al content. The as-cast microstructure of the FeCoNiCr0.5Al0.8 and FeCoNiCr0.5Al1.0 HEAs was composed of ordered/nonordered body-centered cubic (BCC) nanocomposite dendrites, network-like interdendritic face-centered cubic (FCC)/BCC eutectics, and plate-like FCC/BCC eutectics. The high compressive properties can be attributed to the eutectics formed both interdendritically and at grain boundaries, which considerably reduce the embrittlement of the interfaces.
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页码：3460 / 3465
页数：5
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