| Y2O3对CoCrFeMnNi高熵合金退火稳定性的影响 |
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| 引用本文： | 张太超,李俊魁,杨春辉,吴起鹏.Y2O3对CoCrFeMnNi高熵合金退火稳定性的影响[J].金属热处理,2019,44(1):195-204. |
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| 作者姓名： | 张太超 李俊魁 杨春辉 吴起鹏 |
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| 作者单位： | 1.中原工学院 材料与化工学院；2.燕山大学 亚稳材料制备技术与科学国家重点实验室；3.中国电建集团长春发电设备有限公司；4.中建七局建筑工程装饰有限公司 |
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| 基金项目： | 国家自然科学基金(U1204508);河南省自然科学基金(U1204508) |
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| 摘 要： | 利用放电等离子烧结技术和真空熔炼技术,制备了CoCrFeMnNi高熵合金,并分析了稀土氧化物Y2O3对CoCrFeMnNi高熵合金退火稳定性的影响。结果显示,未退火CoCrFeMnNi高熵合金均由面心立方结构组成;在800℃退火72 h后,没有添加Y2O3和添加2. 0%（质量分数） Y2O3的CoCrFeMnNi高熵合金中分别析出了层片状的富Cr相和大颗粒状的Cr-Mn相,添加1. 0%Y2O3的合金中退火后则没有第二相生成。退火试验结果与XRD结果一致,表明添加1. 0%Y2O3可提高CoCrFeMnNi高熵合金的退火稳定性。
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| 关 键 词： | 高熵合金 Y2O3 退火 相稳定性 |
Effect of Y_2O_3 on phase stability of CoCrFeMnNi high entropy alloy after annealing |
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| Zhang Taichao,Li Junkui,Yang Chunhui,Wu Qipeng.Effect of Y_2O_3 on phase stability of CoCrFeMnNi high entropy alloy after annealing[J].Heat Treatment of Metals,2019,44(1):195-204. |
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| Authors: | Zhang Taichao Li Junkui Yang Chunhui Wu Qipeng |
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| Affiliation: | (Department of Material and Chemical Engineering,Zhongyuan University of Technology,Zhengzhou Henan 450005,China;State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao Hebei 066004,China;Power China Changchun Generating Equipment Group Limited,Changchun Jilin 056004,China;The Construction Decoration Corporation of China Construction No.5 Engineering Bureau,Zhengzhou Henan 450005,China) |
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| Abstract: | CoCrFeMnNi high entropy alloys with and without Y2O3 addition were prepared by spark plasma sintering and vacuum smelting technology,and the phase stability of CoCrFeMnNi alloys after annealing was studied. The research results indicate that the CoCrFeMnNi alloys without annealing are composed of face centered cubic structure. After annealing at 800 ℃ for 72 h,lamellar Cr-ich phase and large particle Cr-Mn phase are found in the alloys without Y2O3 and with 2. 0% Y2O3( mass fraction) respectively,while there is no secondary phase formation in the alloy with 1. 0% Y2O3. The annealing experiment results are consistent with that of XRD and EDS mapping,showing that the addition of 1. 0% Y2O3 can improve the annealing stability of CoCrFeMnNi high entropy alloy. |
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| Keywords: | highentropy alloys Y2O3 annealing phase stability |
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