| METALS AND METAL MATRIX COMPOSITES |
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| Effect of Mo Content on Microstructure, Mechanical Properties and Corrosion Resistance of Al0.1CoCrCu0.5FeNiMox High-entropy Alloys |
| TAO Jichuang, LU Yiping
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| Key Laboratory of Solidification Control and Digital Preparation Technology (Liaoning Province), School of Materials Science and Engineering, Dalian University of Technology, Dalian 116024, China |
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Abstract The addition of molybdenum in stainless steel stabilizes the passivation film of stainless steel and improves its corrosion resistance. The effects of Mo content on the microstructure, mechanical properties and corrosion resistance of Al0.1CoCrCu0.5FeNiMox high-entropy alloys have been investigated by XRD, EPMA, hardness test, compression test and potentiodynamic polarization test. The results show that the alloys have a dendritic structure, and are composed of the FCC phase and the FCC-structured Cu-rich phase and the σ phase. The hardness and yield strength of the alloys increase as the content of Mo element increases. Besides, with the increase of Mo content, the corrosion potential first increases and then decreases, the corrosion current density decreases, its resistance to general corrosion is improved and the passive area increases significantly, showing better resistance to Cl-.
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Published: 25 April 2020
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| Fund:This work was financially supported by the National Natural Science Foundation of China (51822402,51671044), the Fundamental Research Funds for the Central Universities (DUT16ZD206) and the Dalian Support Plan for Innovation of Highlevel Talents (Youth Technology Stars,2016RQ005). |
About author:: Jichuang Tao, a master student at Dalian University of Technology, focuses on high-entropy alloys and studies the effects of Mo elements on the microstructure and properties of high-entropy alloys.
Yiping Lu, professor and doctoral tutor of Dalian University of Technology, presided over 2 projects of the National Natural Science Foundation, 1 youth fund project, 1st funded and specially funded by the China Postdoctoral Science Foundation, and participated in the National Natural Science Foundation of China Projects, etc. He has published 71 SCI papers, 47 first authors and communication authors, including internationally renowned journals such as Acta Materialia, Nanoscale, Scientific Report, Applied Physics Letters, and Journal of Applied Physics. The above results were cited 471 times by 52 research institutions. The first author, Acta Materlia, cited a high-cited paper that authorized six invention patents. He was awarded the first prize of the 2015 Ministry of
Education Technology Invention and the second prize of the 2015 National Technology Invention. Won the gold medal of the 44th Geneva International Invention Exhibition, China International Industry Fair Award (special grade). The international conference invited the report 4 times, the domestic invitation report 6 times, and the branch chairman 1 time. He is also the director and deputy secretary-general of the Solidification Science and Technology Branch of the China Society for Materials Research, and the director of the Youth Work Committee of the China Society for Materials Research. |
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2020, Vol. 34 
