Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloy
A series of Al0.1CoCrFeNi-xNb (x = 0, 1, 3, 5, 7, 9 wt%) high-entropy alloys (HEAs) were prepared using high-energy ball milling and Spark Plasma Sintering (SPS) methods. The influence of Nb element doping on the microstructure and properties of Al0.1CoCrFeNi HEAs was systematically studied through...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-07-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425018046 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849408934431948800 |
|---|---|
| author | Mingchun Zhao Lin Huang Ke Zhang Ke Xiong Dashan Guo Wei Feng |
| author_facet | Mingchun Zhao Lin Huang Ke Zhang Ke Xiong Dashan Guo Wei Feng |
| author_sort | Mingchun Zhao |
| collection | DOAJ |
| description | A series of Al0.1CoCrFeNi-xNb (x = 0, 1, 3, 5, 7, 9 wt%) high-entropy alloys (HEAs) were prepared using high-energy ball milling and Spark Plasma Sintering (SPS) methods. The influence of Nb element doping on the microstructure and properties of Al0.1CoCrFeNi HEAs was systematically studied through tensile testing, hardness testing, friction and wear testing, and microstructure observation. The results showed that with the increase of Nb content, the phase structure of Al0.1CoCrFeNi-xNb high-entropy alloys (subsequently represented by Al0.1-xNb HEAs changed, transforming the alloy structure from a single FCC to a dual-phase structure of FCC and HCP (Laves phase) mixture. Its tensile strength increased with the increase of Nb content, while its plasticity showed a decreasing trend. As the Nb content increases, the hardness of the alloy significantly increases, from 174.2HV in 0Nb alloy to 384.7HV in 9Nb alloy. Through the analysis of the tensile fracture morphology, it is found that the fracture mainly occurs at brittle intermetallic compounds. For Al0.1-xNb HEAs, when x > 3, the alloy exhibits a quasi-cleavage fracture mechanism, while when x ≤ 3, the alloy exhibits a plastic fracture mechanism. With the increase of Nb content, the average friction coefficient of the alloy shows a trend of first increasing and then decreasing. The wear rate of the alloy gradually decreases from 4.04 × 10−4 mm3/(N · m) of 0Nb to 2.03 × 10−4 mm3/(N · m) of 9Nb, indicating that the wear resistance of the alloy increases. Analysis shows that the wear mechanism of Al0.1-xNb HEAs is abrasive wear, adhesive wear, and slight oxidative wear. |
| format | Article |
| id | doaj-art-3331b8d5865e4efa8a7361897c72f924 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-3331b8d5865e4efa8a7361897c72f9242025-08-20T03:35:40ZengElsevierJournal of Materials Research and Technology2238-78542025-07-01375578559210.1016/j.jmrt.2025.07.146Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloyMingchun Zhao0Lin Huang1Ke Zhang2Ke Xiong3Dashan Guo4Wei Feng5School of Mechanical Engineering, Chengdu University, Chengdu, 610106, China; Sichuan Province Engineering Technology Research Center of Powder Metallurgy, Chengdu, 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu, 610106, China; Sichuan Province Engineering Technology Research Center of Powder Metallurgy, Chengdu, 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu, 610106, China; Sichuan Province Engineering Technology Research Center of Powder Metallurgy, Chengdu, 610106, ChinaSchool of Architecture and Environment, Sichuan University, Chengdu, 610065, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu, 610106, China; Sichuan Province Engineering Technology Research Center of Powder Metallurgy, Chengdu, 610106, ChinaSchool of Mechanical Engineering, Chengdu University, Chengdu, 610106, China; Sichuan Province Engineering Technology Research Center of Powder Metallurgy, Chengdu, 610106, ChinaA series of Al0.1CoCrFeNi-xNb (x = 0, 1, 3, 5, 7, 9 wt%) high-entropy alloys (HEAs) were prepared using high-energy ball milling and Spark Plasma Sintering (SPS) methods. The influence of Nb element doping on the microstructure and properties of Al0.1CoCrFeNi HEAs was systematically studied through tensile testing, hardness testing, friction and wear testing, and microstructure observation. The results showed that with the increase of Nb content, the phase structure of Al0.1CoCrFeNi-xNb high-entropy alloys (subsequently represented by Al0.1-xNb HEAs changed, transforming the alloy structure from a single FCC to a dual-phase structure of FCC and HCP (Laves phase) mixture. Its tensile strength increased with the increase of Nb content, while its plasticity showed a decreasing trend. As the Nb content increases, the hardness of the alloy significantly increases, from 174.2HV in 0Nb alloy to 384.7HV in 9Nb alloy. Through the analysis of the tensile fracture morphology, it is found that the fracture mainly occurs at brittle intermetallic compounds. For Al0.1-xNb HEAs, when x > 3, the alloy exhibits a quasi-cleavage fracture mechanism, while when x ≤ 3, the alloy exhibits a plastic fracture mechanism. With the increase of Nb content, the average friction coefficient of the alloy shows a trend of first increasing and then decreasing. The wear rate of the alloy gradually decreases from 4.04 × 10−4 mm3/(N · m) of 0Nb to 2.03 × 10−4 mm3/(N · m) of 9Nb, indicating that the wear resistance of the alloy increases. Analysis shows that the wear mechanism of Al0.1-xNb HEAs is abrasive wear, adhesive wear, and slight oxidative wear.http://www.sciencedirect.com/science/article/pii/S2238785425018046AlCoCrFeNi HEASPSHigh-energy ball millingMechanical propertiesFriction and wear |
| spellingShingle | Mingchun Zhao Lin Huang Ke Zhang Ke Xiong Dashan Guo Wei Feng Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloy Journal of Materials Research and Technology AlCoCrFeNi HEA SPS High-energy ball milling Mechanical properties Friction and wear |
| title | Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloy |
| title_full | Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloy |
| title_fullStr | Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloy |
| title_full_unstemmed | Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloy |
| title_short | Effect of Nb content on the properties of Al0.1CoCrFeNi high-entropy alloy |
| title_sort | effect of nb content on the properties of al0 1cocrfeni high entropy alloy |
| topic | AlCoCrFeNi HEA SPS High-energy ball milling Mechanical properties Friction and wear |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425018046 |
| work_keys_str_mv | AT mingchunzhao effectofnbcontentonthepropertiesofal01cocrfenihighentropyalloy AT linhuang effectofnbcontentonthepropertiesofal01cocrfenihighentropyalloy AT kezhang effectofnbcontentonthepropertiesofal01cocrfenihighentropyalloy AT kexiong effectofnbcontentonthepropertiesofal01cocrfenihighentropyalloy AT dashanguo effectofnbcontentonthepropertiesofal01cocrfenihighentropyalloy AT weifeng effectofnbcontentonthepropertiesofal01cocrfenihighentropyalloy |