Novel cost-effective Fe-based high entropy alloys with balanced strength and ductility
Based on the current pseudo-binary design strategy of eutectic high entropy alloy (EHEA), a novel approach to design eutectic or near-eutectic HEA was proposed. The eutectic composition can be experimentally specified through adjusting the atomic content ratio (RI/F) of the intermetallic forming ele...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-01-01
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| Series: | Materials & Design |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127518308402 |
| _version_ | 1818511317290450944 |
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| author | Yu Yin Jingqi Zhang Qiyang Tan Wyman Zhuang Ning Mo Michael Bermingham Ming-Xing Zhang |
| author_facet | Yu Yin Jingqi Zhang Qiyang Tan Wyman Zhuang Ning Mo Michael Bermingham Ming-Xing Zhang |
| author_sort | Yu Yin |
| collection | DOAJ |
| description | Based on the current pseudo-binary design strategy of eutectic high entropy alloy (EHEA), a novel approach to design eutectic or near-eutectic HEA was proposed. The eutectic composition can be experimentally specified through adjusting the atomic content ratio (RI/F) of the intermetallic forming elements to the face-centered cubic (FCC) forming elements in an equiatomic HEA system. This adjustment was done by reducing the contents of intermetallic forming elements (Mo and Cr) and accordingly increasing the content of FCC forming element (Fe). Based on this new design strategy, a cost-effective Fe-based near EHEA (Fe45Ni25Cr5Mo25 alloys) were designed and produced after decreasing the RI/F value from 1 to 3/7. The as-cast alloy was associated with compressive strength of 1661 MPa and ductility of 17%. It was considered that the hard trigonal μ phase together with the relatively ductile lamellar eutectic structure were responsible for the high combined properties. In addition, the effects of solute content, Mo and Cr in particular, on the microstructure and mechanical properties of this type of HEAs were also studied. Keywords: High entropy alloys, Eutectic, Microstructure evolution, Mechanical properties |
| first_indexed | 2024-12-10T23:31:40Z |
| format | Article |
| id | doaj.art-5c36b469cd114534878fe541f4f65e62 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-10T23:31:40Z |
| publishDate | 2019-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-5c36b469cd114534878fe541f4f65e622022-12-22T01:29:21ZengElsevierMaterials & Design0264-12752019-01-011622433Novel cost-effective Fe-based high entropy alloys with balanced strength and ductilityYu Yin0Jingqi Zhang1Qiyang Tan2Wyman Zhuang3Ning Mo4Michael Bermingham5Ming-Xing Zhang6School of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, AustraliaAerospace Division, Defence Science and Technology Organisation, Melbourne, VIC 3207, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, AustraliaSchool of Mechanical and Mining Engineering, The University of Queensland, St Lucia, QLD 4072, Australia; Corresponding author.Based on the current pseudo-binary design strategy of eutectic high entropy alloy (EHEA), a novel approach to design eutectic or near-eutectic HEA was proposed. The eutectic composition can be experimentally specified through adjusting the atomic content ratio (RI/F) of the intermetallic forming elements to the face-centered cubic (FCC) forming elements in an equiatomic HEA system. This adjustment was done by reducing the contents of intermetallic forming elements (Mo and Cr) and accordingly increasing the content of FCC forming element (Fe). Based on this new design strategy, a cost-effective Fe-based near EHEA (Fe45Ni25Cr5Mo25 alloys) were designed and produced after decreasing the RI/F value from 1 to 3/7. The as-cast alloy was associated with compressive strength of 1661 MPa and ductility of 17%. It was considered that the hard trigonal μ phase together with the relatively ductile lamellar eutectic structure were responsible for the high combined properties. In addition, the effects of solute content, Mo and Cr in particular, on the microstructure and mechanical properties of this type of HEAs were also studied. Keywords: High entropy alloys, Eutectic, Microstructure evolution, Mechanical propertieshttp://www.sciencedirect.com/science/article/pii/S0264127518308402 |
| spellingShingle | Yu Yin Jingqi Zhang Qiyang Tan Wyman Zhuang Ning Mo Michael Bermingham Ming-Xing Zhang Novel cost-effective Fe-based high entropy alloys with balanced strength and ductility Materials & Design |
| title | Novel cost-effective Fe-based high entropy alloys with balanced strength and ductility |
| title_full | Novel cost-effective Fe-based high entropy alloys with balanced strength and ductility |
| title_fullStr | Novel cost-effective Fe-based high entropy alloys with balanced strength and ductility |
| title_full_unstemmed | Novel cost-effective Fe-based high entropy alloys with balanced strength and ductility |
| title_short | Novel cost-effective Fe-based high entropy alloys with balanced strength and ductility |
| title_sort | novel cost effective fe based high entropy alloys with balanced strength and ductility |
| url | http://www.sciencedirect.com/science/article/pii/S0264127518308402 |
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