Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloys
The microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy (x = 1, 3, 4 and y = 4, 2, 1 (at.%)) high-entropy alloys (HEAs) were systematically investigated. The low Al and Ti addition is designed to inhibit the formation of precipitation, which is ai...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423013091 |
| _version_ | 1797745269453881344 |
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| author | Yin Cunhong Huang Hua Qin Jiaqing Zheng Baochao An Xulong Yi Yanliang |
| author_facet | Yin Cunhong Huang Hua Qin Jiaqing Zheng Baochao An Xulong Yi Yanliang |
| author_sort | Yin Cunhong |
| collection | DOAJ |
| description | The microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy (x = 1, 3, 4 and y = 4, 2, 1 (at.%)) high-entropy alloys (HEAs) were systematically investigated. The low Al and Ti addition is designed to inhibit the formation of precipitation, which is aimed to reach solution strengthening, so as to realize its engineering processing better. The results show that the HEAs mainly contain face-centered cubic (FCC) structure without precipitation. As the Ti/Al ratio increases from 1/4 to 4/1, the average geometrically necessary dislocations (GNDs) density of the HEAs increases from 1.04 × 1014 m−2 to 1.11 × 1014 m−2, and the average Schmid factor decreases from 0.442 to 0.288. Moreover, the ductility, strength, and microhardness of the HEAs change from 13.87%, 910.31 MPa, and 306.12 HV to 10.62%, 1221.09 MPa, and 382.97 HV, respectively. The sliding wear mechanism of HEAs against SiC is mainly composed of abrasive wear and adhesive wear. The increment of Ti/Al ratio improves the tribology performance of HEAs, e.g. the wear rate decreases from 3.95 × 106 mm3/(N·m) to 2.58 × 106 mm3/(N·m) with the increased Ti/Al ratio at a normal load of 7 N. |
| first_indexed | 2024-03-12T15:20:59Z |
| format | Article |
| id | doaj.art-95aad42d1c8140e2843fe77fd92f8a14 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:59Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-95aad42d1c8140e2843fe77fd92f8a142023-08-11T05:33:25ZengElsevierJournal of Materials Research and Technology2238-78542023-07-012517611773Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloysYin Cunhong0Huang Hua1Qin Jiaqing2Zheng Baochao3An Xulong4Yi Yanliang5Key Laboratory of Advanced Manufacturing Technology, Ministry of Education, Guizhou University, Guiyang, 550025, China; School of Mechanical Engineering, Guizhou University, Guiyang, 550025, ChinaSchool of Mechanical Engineering, Guizhou University, Guiyang, 550025, ChinaInstitute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, ChinaInstitute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, ChinaSchool of Materials Science and Engineering, Changzhou University, Changzhou, 213164, China; Corresponding author.Institute of Advance Wear & Corrosion Resistant and Functional Materials, Jinan University, Guangzhou, Guangdong, 510632, China; Shaoguan Research Institute of Jinan University, 168 Muxi Avenue, Shaoguan, 512027, China; Corresponding author.The microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy (x = 1, 3, 4 and y = 4, 2, 1 (at.%)) high-entropy alloys (HEAs) were systematically investigated. The low Al and Ti addition is designed to inhibit the formation of precipitation, which is aimed to reach solution strengthening, so as to realize its engineering processing better. The results show that the HEAs mainly contain face-centered cubic (FCC) structure without precipitation. As the Ti/Al ratio increases from 1/4 to 4/1, the average geometrically necessary dislocations (GNDs) density of the HEAs increases from 1.04 × 1014 m−2 to 1.11 × 1014 m−2, and the average Schmid factor decreases from 0.442 to 0.288. Moreover, the ductility, strength, and microhardness of the HEAs change from 13.87%, 910.31 MPa, and 306.12 HV to 10.62%, 1221.09 MPa, and 382.97 HV, respectively. The sliding wear mechanism of HEAs against SiC is mainly composed of abrasive wear and adhesive wear. The increment of Ti/Al ratio improves the tribology performance of HEAs, e.g. the wear rate decreases from 3.95 × 106 mm3/(N·m) to 2.58 × 106 mm3/(N·m) with the increased Ti/Al ratio at a normal load of 7 N.http://www.sciencedirect.com/science/article/pii/S2238785423013091High-entropy alloyMicrostructureMechanical propertyFriction and wear |
| spellingShingle | Yin Cunhong Huang Hua Qin Jiaqing Zheng Baochao An Xulong Yi Yanliang Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloys Journal of Materials Research and Technology High-entropy alloy Microstructure Mechanical property Friction and wear |
| title | Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloys |
| title_full | Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloys |
| title_fullStr | Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloys |
| title_full_unstemmed | Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloys |
| title_short | Microstructure, mechanical and tribological properties of thermomechanical processed (CoNiCr0.5)95AlxTiy high-entropy alloys |
| title_sort | microstructure mechanical and tribological properties of thermomechanical processed conicr0 5 95alxtiy high entropy alloys |
| topic | High-entropy alloy Microstructure Mechanical property Friction and wear |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423013091 |
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