Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser melting
Metal lattice structural materials are widely used in aerospace, automotive industry, and other fields due to their advantages of lightweight, high specific strength, energy absorption, and porosity. High strength and toughness FeCrNi medium entropy alloy (MEA) was taken as the research object, and...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2024-01-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000508 |
| _version_ | 1797335468945178624 |
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| author | SUN Chi WANG Jian HE He QIN Dongyang CAO Yuankui FU Ao LIU Bin |
| author_facet | SUN Chi WANG Jian HE He QIN Dongyang CAO Yuankui FU Ao LIU Bin |
| author_sort | SUN Chi |
| collection | DOAJ |
| description | Metal lattice structural materials are widely used in aerospace, automotive industry, and other fields due to their advantages of lightweight, high specific strength, energy absorption, and porosity. High strength and toughness FeCrNi medium entropy alloy (MEA) was taken as the research object, and selective laser melting (SLM) was used to prepare FeCrNi medium entropy alloy lattice structure materials with four simulated lattice structures: BCC, BCCZ, FCC and FCC. The microstructure, mechanical properties, and deformation behavior of these materials were systematically studied.The results indicate that the FeCrNi medium entropy alloy lattice structure prepared by the skip scanning strategy has high node overlap quality, dense interlaced stacking of molten pools, and uniform and fine grains. When the relative density is similar, the specific strength and specific energy absorption values of BCC, FCC, BCCZ, and FCCZ lattice structures increase sequentially.The specific energy absorption of FeCrNi medium entropy alloy material with FCCZ lattice structure reaches 49.8J·g-1, significantly higher than that of Ti6Al4V and 316L stainless steel lattice materials.The finite element simulation analysis shows that the presence of Z-shaped pillars increases the apparent strength and stiffness of the lattice material, and leads to a transition in deformation behavior from bending dominated to tensile dominated, which is the main reason for the strength improvement of the FCCZ lattice structure. |
| first_indexed | 2024-03-08T08:37:31Z |
| format | Article |
| id | doaj.art-a14c3cce71974fc3873a54443d5b6a5f |
| institution | Directory Open Access Journal |
| issn | 1001-4381 |
| language | zho |
| last_indexed | 2024-03-08T08:37:31Z |
| publishDate | 2024-01-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-a14c3cce71974fc3873a54443d5b6a5f2024-02-02T00:34:38ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43812024-01-0152121121910.11868/j.issn.1001-4381.2023.00050820240120Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser meltingSUN Chi0WANG Jian1HE He2QIN Dongyang3CAO Yuankui4FU Ao5LIU Bin6Powder Metallurgy Research Institute of Central South University, Changsha 410083, ChinaPowder Metallurgy Research Institute of Central South University, Changsha 410083, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, ChinaSchool of Aeronautics, Northwestern Polytechnical University, Xi'an 710072, ChinaPowder Metallurgy Research Institute of Central South University, Changsha 410083, ChinaPowder Metallurgy Research Institute of Central South University, Changsha 410083, ChinaPowder Metallurgy Research Institute of Central South University, Changsha 410083, ChinaMetal lattice structural materials are widely used in aerospace, automotive industry, and other fields due to their advantages of lightweight, high specific strength, energy absorption, and porosity. High strength and toughness FeCrNi medium entropy alloy (MEA) was taken as the research object, and selective laser melting (SLM) was used to prepare FeCrNi medium entropy alloy lattice structure materials with four simulated lattice structures: BCC, BCCZ, FCC and FCC. The microstructure, mechanical properties, and deformation behavior of these materials were systematically studied.The results indicate that the FeCrNi medium entropy alloy lattice structure prepared by the skip scanning strategy has high node overlap quality, dense interlaced stacking of molten pools, and uniform and fine grains. When the relative density is similar, the specific strength and specific energy absorption values of BCC, FCC, BCCZ, and FCCZ lattice structures increase sequentially.The specific energy absorption of FeCrNi medium entropy alloy material with FCCZ lattice structure reaches 49.8J·g-1, significantly higher than that of Ti6Al4V and 316L stainless steel lattice materials.The finite element simulation analysis shows that the presence of Z-shaped pillars increases the apparent strength and stiffness of the lattice material, and leads to a transition in deformation behavior from bending dominated to tensile dominated, which is the main reason for the strength improvement of the FCCZ lattice structure.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000508selective laser meltingmedium entropy alloylattice structuremechanical property |
| spellingShingle | SUN Chi WANG Jian HE He QIN Dongyang CAO Yuankui FU Ao LIU Bin Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser melting Cailiao gongcheng selective laser melting medium entropy alloy lattice structure mechanical property |
| title | Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser melting |
| title_full | Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser melting |
| title_fullStr | Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser melting |
| title_full_unstemmed | Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser melting |
| title_short | Lattice structures and mechanical properties of FeCrNi medium-entropy alloy prepared by selective laser melting |
| title_sort | lattice structures and mechanical properties of fecrni medium entropy alloy prepared by selective laser melting |
| topic | selective laser melting medium entropy alloy lattice structure mechanical property |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2023.000508 |
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