Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold Rolling
The as-cast (Fe50Mn30Co10Cr10)97C2Mo1 HEA (high entropy alloy) was prepared and cold-rolled at 70%. Subsequently, annealing heat treatment at different temperatures (900 °C, 950 °C, 1000 °C) was carried out. The microstructure evolution and mechanical properties of the HEA were systematically invest...
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MDPI AG
2024-01-01
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| Online Access: | https://www.mdpi.com/1996-1944/17/3/676 |
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| author | Yukun Lv Pingtao Song Yuzhe Wang Xuerou Zhao Wei Gao Jie Zhang Yutian Lei Jian Chen |
| author_facet | Yukun Lv Pingtao Song Yuzhe Wang Xuerou Zhao Wei Gao Jie Zhang Yutian Lei Jian Chen |
| author_sort | Yukun Lv |
| collection | DOAJ |
| description | The as-cast (Fe50Mn30Co10Cr10)97C2Mo1 HEA (high entropy alloy) was prepared and cold-rolled at 70%. Subsequently, annealing heat treatment at different temperatures (900 °C, 950 °C, 1000 °C) was carried out. The microstructure evolution and mechanical properties of the HEA were systematically investigated. The results showed that the HEA annealed at 900 °C and 950 °C exhibited uneven grain size and rich σ precipitation phase at grain boundaries. The grains began to grow and complete recrystallization, and no σ phases were observed in HEA annealed at 1000 °C, which resulted in a higher tensile strength of ~885 MPa and elongation of ~68% compared with other annealed HEAs. The higher volume fraction of annealing twins with 60°<111> orientation was produced in HEA annealed at 1000 °C, which enhanced the tensile strength and plasticity via the Twinning-induced plasticity (TWIP) mechanism. |
| first_indexed | 2024-03-08T03:52:48Z |
| format | Article |
| id | doaj.art-7f006abc959c4cff8c6b0a5b4ae6d97f |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-08T03:52:48Z |
| publishDate | 2024-01-01 |
| publisher | MDPI AG |
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| spelling | doaj.art-7f006abc959c4cff8c6b0a5b4ae6d97f2024-02-09T15:17:41ZengMDPI AGMaterials1996-19442024-01-0117367610.3390/ma17030676Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold RollingYukun Lv0Pingtao Song1Yuzhe Wang2Xuerou Zhao3Wei Gao4Jie Zhang5Yutian Lei6Jian Chen7School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Railway Equipment Manufacturing, Shaanxi Railway Institute, Weinan 714099, ChinaSchool of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaSchool of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, ChinaThe as-cast (Fe50Mn30Co10Cr10)97C2Mo1 HEA (high entropy alloy) was prepared and cold-rolled at 70%. Subsequently, annealing heat treatment at different temperatures (900 °C, 950 °C, 1000 °C) was carried out. The microstructure evolution and mechanical properties of the HEA were systematically investigated. The results showed that the HEA annealed at 900 °C and 950 °C exhibited uneven grain size and rich σ precipitation phase at grain boundaries. The grains began to grow and complete recrystallization, and no σ phases were observed in HEA annealed at 1000 °C, which resulted in a higher tensile strength of ~885 MPa and elongation of ~68% compared with other annealed HEAs. The higher volume fraction of annealing twins with 60°<111> orientation was produced in HEA annealed at 1000 °C, which enhanced the tensile strength and plasticity via the Twinning-induced plasticity (TWIP) mechanism.https://www.mdpi.com/1996-1944/17/3/676microstructureHEAannealingdeformation twin |
| spellingShingle | Yukun Lv Pingtao Song Yuzhe Wang Xuerou Zhao Wei Gao Jie Zhang Yutian Lei Jian Chen Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold Rolling Materials microstructure HEA annealing deformation twin |
| title | Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold Rolling |
| title_full | Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold Rolling |
| title_fullStr | Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold Rolling |
| title_full_unstemmed | Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold Rolling |
| title_short | Improving Mechanical Properties of Fe-Mn-Co-Cr High-Entropy Alloy via Annealing after Cold Rolling |
| title_sort | improving mechanical properties of fe mn co cr high entropy alloy via annealing after cold rolling |
| topic | microstructure HEA annealing deformation twin |
| url | https://www.mdpi.com/1996-1944/17/3/676 |
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