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Effect of Elastic Deformation of High-Entropy Alloy on Geometrically Necessary Dislocation Density in Micro- and Nano-indentation Test
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Jianjun ZHOU1, Jie CHEN2, Yi WANG3
Mining and Metallurgical Engineering | 2023, 43(4) : 139 - 143
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Mining and Metallurgical Engineering | 2023, 43(4): 139-143
• MATERIALS •
Effect of Elastic Deformation of High-Entropy Alloy on Geometrically Necessary Dislocation Density in Micro- and Nano-indentation Test
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Jianjun ZHOU1, Jie CHEN2, Yi WANG3
Affiliations
  • 1.Tangshan Guye District Vocational and Technical Education Center School, Tangshan 063100, Hebei, China
  • 2.Anyang Vocational and Technical College, Anyang 455000, Henan, China
  • 3.Civil Aviation Flight University of China, Guanghan 618300, Sichuan, China
Published: 2023-08-01 doi: 10.3969/j.issn.0253-6099.2023.04.030
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A micro- and nano-indentation test was performed for CoCrFeNiMn high entropy alloy. The relationship between the geometrically necessary dislocation (GND) density of CoCrFeNiMn and reciprocal value of real indentation depth (1/h) was obtained under different working conditions, and the influence of elastic factor (Δe) on GND density was also explored. The results show that GND density with the consideration of elastic deformation (ρGe) presents a nonlinear relationship with 1/h, while GND density without the consideration of influence of elastic deformation (ρG) has a linear relation with 1/h. Based on the comparison of variation of ρG/ρGe with the indentation depth, it is found that the ratio of ρG/ρGe is 3-4 when the indentation depth is less than 500 nm, indicating that elastic factor can have an obvious impact on the GND density at shallow indentation. And, the ratio of ρG/ρGe is approaching 1 when the indentation depth is up to 3 000 nm. It is shown that as indentation depth increases, dislocation slip gradually dominates deformation.

high entropy alloy  /  micro- and nano-indentation  /  geometrically necessary dislocation (GND)  /  elastic factor  /  elastic deformation  /  dislocation density
Jianjun ZHOU, Jie CHEN, Yi WANG. Effect of Elastic Deformation of High-Entropy Alloy on Geometrically Necessary Dislocation Density in Micro- and Nano-indentation Test[J]. Mining and Metallurgical Engineering, 2023 , 43 (4) : 139 -143 . DOI: 10.3969/j.issn.0253-6099.2023.04.030
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Year 2023 volume 43 Issue 4
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Article Info
doi: 10.3969/j.issn.0253-6099.2023.04.030
  • Receive Date：2023-02-27
  • Online Date：2026-03-05
  • Published：2023-08-01
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  • Received：2023-02-27
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Affiliations
    1.Tangshan Guye District Vocational and Technical Education Center School, Tangshan 063100, Hebei, China
    2.Anyang Vocational and Technical College, Anyang 455000, Henan, China
    3.Civil Aviation Flight University of China, Guanghan 618300, Sichuan, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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