| 多孔CoCrNi中熵合金的制备和吸能特性分析 |
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| 引用本文： | 贾桥瑞,王晓花,刘杰,马胜国.多孔CoCrNi中熵合金的制备和吸能特性分析[J].稀有金属材料与工程,2024,53(4):1149-1154. |
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| 作者姓名： | 贾桥瑞 王晓花 刘杰 马胜国 |
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| 作者单位： | 太原理工大学机械与运载工程学院,太原理工大学航空航天学院,太原理工大学航空航天学院,太原理工大学机械与运载工程学院 |
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| 基金项目： | 国家杰出青年科学基金资助(项目号12225207)；国家自然科学基金面上项目资助(项目号12072220) |
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| 摘 要： | 本文采用粉末烧结-溶解法成功制备了孔隙率为63%~78%,孔径1.3~2.2mm的多孔CoCrNi中熵合金,借助SEM和XRD对试样的孔形貌和物相组成进行分析,并对试样进行轴向准静态压缩实验研究。结果表明：多孔CoCrNi中熵合金的弹性模量和屈服平台应力均随孔隙率、孔径的增大而减小；相对孔隙率而言,孔径对力学性能的影响程度较低；不同孔隙率的多孔CoCrNi中熵合金其致密应变下单位体积的能量吸收值为34.8~14.3MJ/m3,约为泡沫铝的3.8倍,且5种孔隙率的理想吸能效率(I)都接近0.8,说明该多孔CoCrNi中熵合金有潜力成为一种理想的吸能材料。
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| 关 键 词： | 多孔中熵合金 粉末冶金 CaCl2 力学性能，吸能特性 |
| 收稿时间： | 2023/2/22 0:00:00 |
| 修稿时间： | 2023/3/14 0:00:00 |
Preparation and energy absorption analysis of entropy alloy in porous CoCrNi |
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| Jia Qiaorui,Wang Xiaohu,Liu Jie and Ma Shengguo.Preparation and energy absorption analysis of entropy alloy in porous CoCrNi[J].Rare Metal Materials and Engineering,2024,53(4):1149-1154. |
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| Authors: | Jia Qiaorui Wang Xiaohu Liu Jie and Ma Shengguo |
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| Affiliation: | School of mechanical and transportation engineering,Taiyuan University of technology,Taiyuan,College of Aeronautics and Astronautics,Taiyuan University of technology,Taiyuan,College of Aeronautics and Astronautics,Taiyuan University of technology,Taiyuan,School of mechanical and transportation engineering,Taiyuan University of technology,Taiyuan |
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| Abstract: | In this paper, porous CoCrNi mesentropic alloys with porosity of 63%~78% and pore size of 1.3~2.2mm were successfully prepared by powder sintering and dissolution method. The pore morphology and phase composition of the samples were analyzed by SEM and XRD, and the axial quasi-static compression experiments were conducted on the samples. The results show that the elastic modulus and yield platform stress of porous CoCrNi alloy decrease with the increase of porosity and pore size. Compared with porosity, the effect of pore size on mechanical properties is low. The energy absorption values per unit volume of porous CoCrNi mesentropy alloys with different porosity range from 34.8 to 14.3MJ/m3 under dense strain, about 3.8 times that of aluminum foam, and the ideal energy absorption efficiency (I) of the five porosity ratios is close to 0.8, indicating that the porous CoCrNi mesentropy alloy has the potential to become an ideal energy absorption material. |
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| Keywords: | Porous medium entropy alloy Powder metallurgy CaCl2 Mechanical properties Energy absorption characteristic |
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