Materials Reports  2021, Vol. 35 Issue (Z1): 336-341 |
| METALS AND METAL MATRIX COMPOSITES |
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| Establishment of Constitutive Equation of FeCrNiMn High Entropy Alloy |
| MEI Jinna1, XUE Fei1, WU Tiandong2, WEI Na2, CAI Zhen1
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1 Suzhou Nuclear Power Research Institute, Suzhou 215004, China
2 Xi'an Super Crystal Sci-Tech Development Co., Ltd., Xi'an 710200, China |
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Abstract The hot compression of FeCrNiMn high entropy alloy was carried out at the deformation temperature ranging from 900 ℃ to 1 050 ℃ and the strain rate ranging from 0.001 s-1 to 1 s-1. According to the true stress-true strain curves, the relationships between flow stress and deformation parameters were analyzed. Based on Arrhenius hyperbolic sine equation, the constitutive equation of FeCrNiMn high-entropy alloy was established. Error analysis was shown that the established constitutive equation was basically consistent with the experimental value, which can be used as an evidence for the selection of parameters of hot deformation process.
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Published: 16 July 2021
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| About author:: Jinna Mei, senior engineer of Suzhou Thermal Engineering Research Institute, graduated from Northwest Polytechnic University in 2010 with a doctor's degree. After graduation, she entered Suzhou Institute of Thermal Engineering. At present, she is mainly engaged in the research of corrosion evaluation technology for nuclear power plants. She has published 12 papers, including 7 retrieved by SCI and 6 as the first author.Fei Xue, is now the technical director of Suzhou Thermal Engineering Research Institute Co., Ltd., director of Power Plant Life Management Technology Center, and deputy leader of Nuclear Power Plant Aging and Life Management Working Group of China Nuclear Energy Industry Association. In 2019, he was awarded “science and technology award young outstanding innovative person” by China Nuclear Energy Industry Association. Over the past 16 years, he has been engaged in the research of nuclear power plant aging and life management technology. After years of technical accumulation, the life management technology team led by Xue Fei has been engaged in material genetic engineering, power plant metal materials, concrete material, rubber and plastic materials structural vibration, structural integrity, aging corrosion and life management, aging monitoring and evaluation, intelligent, platform and big data. The team has accumulated rich research experience and achieved a lot of scientific research and engineering achievements. In the past five years, it has undertaken more than 20 national key R&D programs, 863, 973 and natural funds, authorized more than 100 patents, drafted more than 50 national/industrial standards and won more than 20 provincial and ministerial awards. The team is in a leading position in the field of nuclear power plant aging and life management technology.Tiandong Wu, received his Ph.D. degree in materials science from the University of Northwest Polytechnical University (NWPU) in Mar. 2011—Mar 2017. He was appointed as the deputy manager of the technology center of the Xi'an Super Crystal Sci-Tech Development Co., Ltd after graduation. At present, He is mainly engaged in the processing and engineering research of rare refractory metal materials such as titanium alloys, superalloys, high entropy alloys and titanium aluminum alloys. As major research, he participated in a national military products supporting project, a National Natural Science Foundation, and a State Key Laboratory of solidification technology. He has applied 7 national invention patents and published 9 journal papers in authoritative journals in the field of energy and materials science, including 4 first authors. |
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