Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium content
In this study, the microstructure and mechanical properties of Al0.45CoCrFeNiTix (x = 0, 0.25, 0.5, 0.75, 1.0) high-entropy alloys were investigated. Various techniques including XRD, SEM, EBSD, and TEM were employed, along with hardness tests, compressive tests, and tensile tests conducted at room...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423031459 |
| _version_ | 1797338325279834112 |
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| author | Enhao Wang Jiaqi Li Fuwei Kang Fengchun Jiang Lisong Lv Bo Dai Yang Cao Wei Jiang |
| author_facet | Enhao Wang Jiaqi Li Fuwei Kang Fengchun Jiang Lisong Lv Bo Dai Yang Cao Wei Jiang |
| author_sort | Enhao Wang |
| collection | DOAJ |
| description | In this study, the microstructure and mechanical properties of Al0.45CoCrFeNiTix (x = 0, 0.25, 0.5, 0.75, 1.0) high-entropy alloys were investigated. Various techniques including XRD, SEM, EBSD, and TEM were employed, along with hardness tests, compressive tests, and tensile tests conducted at room temperature. Our findings reveal that the alloy's microstructure changes from FCC + BCC to FCC + BCC + L21 phase as the Ti content increases. Specifically, the BCC content increases from 0.9 % to 62.3 %. This alteration in microstructure leads to a significant enhancement in the compressive yield strength of the alloy, from 305.96 MPa to 1492.53 MPa. The observed strengthening effect can be attributed to the increased BCC content and the formation of the L21 phase within the alloy. The results of the tensile experiments demonstrate that the Ti0.25 alloy exhibits the most favorable overall properties, possessing a yield strength of 619 MPa. This represents a significant increase of 64.6 % when compared to Ti0. The strengthening mechanism of the Al0.45CoCrFeNiTix high-entropy alloy is thoroughly discussed. The main strengthening mechanisms of the alloy system are fine grain strengthening, solid solution strengthening and second phase strengthening. This study achieves a balance between strength and ductility by modulating the phase composition of the alloy, laying the foundation for further development and research into the properties of the high-entropy alloys. |
| first_indexed | 2024-03-08T09:29:24Z |
| format | Article |
| id | doaj.art-fb4f274522204aac8f502e8145074f75 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-08T09:29:24Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-fb4f274522204aac8f502e8145074f752024-01-31T05:43:32ZengElsevierJournal of Materials Research and Technology2238-78542024-01-0128967979Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium contentEnhao Wang0Jiaqi Li1Fuwei Kang2Fengchun Jiang3Lisong Lv4Bo Dai5Yang Cao6Wei Jiang7School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China; Corresponding author.School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, China; Corresponding author.Yantai Research Institute, Harbin Engineering University, Yantai, 264006, ChinaSchool of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, ChinaHarbin Dong'an High Precision Tube Shaft Manufacturing Co., Ltd., Harbin, 150060, ChinaCollege of Mechanical and Electrical Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China; Corresponding author.School of Materials Science and Chemical Engineering, Harbin University of Science and Technology, Harbin, 150040, ChinaIn this study, the microstructure and mechanical properties of Al0.45CoCrFeNiTix (x = 0, 0.25, 0.5, 0.75, 1.0) high-entropy alloys were investigated. Various techniques including XRD, SEM, EBSD, and TEM were employed, along with hardness tests, compressive tests, and tensile tests conducted at room temperature. Our findings reveal that the alloy's microstructure changes from FCC + BCC to FCC + BCC + L21 phase as the Ti content increases. Specifically, the BCC content increases from 0.9 % to 62.3 %. This alteration in microstructure leads to a significant enhancement in the compressive yield strength of the alloy, from 305.96 MPa to 1492.53 MPa. The observed strengthening effect can be attributed to the increased BCC content and the formation of the L21 phase within the alloy. The results of the tensile experiments demonstrate that the Ti0.25 alloy exhibits the most favorable overall properties, possessing a yield strength of 619 MPa. This represents a significant increase of 64.6 % when compared to Ti0. The strengthening mechanism of the Al0.45CoCrFeNiTix high-entropy alloy is thoroughly discussed. The main strengthening mechanisms of the alloy system are fine grain strengthening, solid solution strengthening and second phase strengthening. This study achieves a balance between strength and ductility by modulating the phase composition of the alloy, laying the foundation for further development and research into the properties of the high-entropy alloys.http://www.sciencedirect.com/science/article/pii/S2238785423031459Al0.45CoCrFeNiTixHigh-entropy alloysL21 phaseMechanical propertiesStrengthening mechanisms |
| spellingShingle | Enhao Wang Jiaqi Li Fuwei Kang Fengchun Jiang Lisong Lv Bo Dai Yang Cao Wei Jiang Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium content Journal of Materials Research and Technology Al0.45CoCrFeNiTix High-entropy alloys L21 phase Mechanical properties Strengthening mechanisms |
| title | Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium content |
| title_full | Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium content |
| title_fullStr | Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium content |
| title_full_unstemmed | Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium content |
| title_short | Balancing the mechanical properties of Al0.45CoCrFeNiTix high-entropy alloys by tailoring titanium content |
| title_sort | balancing the mechanical properties of al0 45cocrfenitix high entropy alloys by tailoring titanium content |
| topic | Al0.45CoCrFeNiTix High-entropy alloys L21 phase Mechanical properties Strengthening mechanisms |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423031459 |
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