Phase Stability and Mechanical Properties of FCC Structural CoCrCu_0.5FeNi High-Entropy Alloy with Silicon or Boron Addition

Abstract:

Microstructures, phase stability and properties of the as-solidified CoCrCu_0.5FeNi(Si/B)_x alloys were studied in this work. Intermetallic compounds are found when Si or B was added in a FCC structural CoCrCu_0.5FeNi high-entropy alloy, and B possess a better intermetallic formation ability than Si. On the other, solute ability of Si is better than that of B in CoCrCu_0.5FeNi alloy. The strength of CoCrCu_0.5FeNi high-entropy alloy was improved after the addition of Si and B, and the strengthen mechanism was discussed. Moreover, parameter g can provide a reference to predict the ability of forming intermetallic compounds in CoCrCu_0.5FeNi(Si/B)_x alloys. The increase of δ is prone to the forming of intermetallic compounds. But the volume fraction of intermetallic compounds increase with the decrease of Ω in the same alloy system.

• Periodical: Materials Science Forum (Volume 944)
• Pages: 169-175
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.944.169
• Online since: January 2019
• Authors: Chen Chen, Ning Liu*, Peng Jie Zhou, Hong Fu Xiang
• Keywords: High-Entropy Alloy, Phase Structures, Property, Strengthen Mechanism

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