Significant Improvement the Mechanical Properties of CoCrNi Alloy by Tailoring a Dual FCC-Phase Structure

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ID: 270478
2020
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Abstract
In this work, SixCoCrNi (x = 0, 0.1, 0.2, 0.3, 0.4, molar ratio) alloys were designed by introducing elemental Si into CoCrNi, a medium-entropy alloy (MEA). The effects of Si addition on the microstructure and mechanical properties of the as-cast SiCoCrNi alloys were investigated. The results suggested that a novel Si-rich face-centred cubic (FCC) phase formed in the Si0.3CoCrNi and Si0.4CoCrNi alloys. The Si-rich FCC phase, which featured high hardness and was located between the dendrites of the matrix FCC phase (with higher phase fraction), significantly increased the yield strength of the Si0.4CoCrNi alloys five times compared with the CoCrNi alloy.
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yi2020materialssignificant Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Hailong Yi;Mengyuan Bi;Kang Yang;Bing Zhang;Yi, Hailong;Bi, Mengyuan;Yang, Kang;Zhang, Bing;
Journal Materials (Basel, Switzerland)
Year 2020
DOI
10.3390/ma13214909
URL
https://www.mdpi.com/1996-1944/13/21/4909
Keywords
mechanical properties microstructure sicocrni alloy fcc phase yield strength

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