Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy
ZK60 magnesium alloy was prepared by the hot-pressed sintering combined with the hot-extruded technique. The microstructure and mechanical properties evolution of ZK60 alloy with a reduced extrusion temperature from 350 °C to 250 °C were investigated in detailed. The extruded alloy was mainly compos...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2023-01-01
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| Series: | Materials Research Express |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/2053-1591/ad125e |
| _version_ | 1797385996219711488 |
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| author | Luosheng Ma Lili Ma Ming Chen Jilan Zhou Xinya Feng Lei Jia |
| author_facet | Luosheng Ma Lili Ma Ming Chen Jilan Zhou Xinya Feng Lei Jia |
| author_sort | Luosheng Ma |
| collection | DOAJ |
| description | ZK60 magnesium alloy was prepared by the hot-pressed sintering combined with the hot-extruded technique. The microstructure and mechanical properties evolution of ZK60 alloy with a reduced extrusion temperature from 350 °C to 250 °C were investigated in detailed. The extruded alloy was mainly composed of fine α -Mg grains and MgZn _2 phase. The grains size gradually decreased with a reduction in extrusion temperature, and the yield strength obviously increased accordingly. The alloy extruded at 250 °C exhibited the smallest average grain size of 2.5 μ m and the best combination of strength and plasticity, with a yield strength of 279 MPa and fracture strain of 18.1% in compressive condition, and 263 MPa and 13.7% in tensile condition, as well as a tension-compression yield asymmetry of 0.94. Both the fine grains formed by the continuous and twin induced dynamic crystallization mechanism and the precipitation strengthening contributed to the strength improvement. |
| first_indexed | 2024-03-08T22:02:28Z |
| format | Article |
| id | doaj.art-c24e4605099146dab2a2911c3e627a1d |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-08T22:02:28Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-c24e4605099146dab2a2911c3e627a1d2023-12-19T10:59:59ZengIOP PublishingMaterials Research Express2053-15912023-01-01101212650810.1088/2053-1591/ad125eEffect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloyLuosheng Ma0Lili Ma1https://orcid.org/0000-0003-3182-7265Ming Chen2Jilan Zhou3Xinya Feng4Lei Jia5School of Mechanical Engineering, Qinghai University , Xining, 810016, People’s Republic of ChinaSchool of Mechanical Engineering, Qinghai University , Xining, 810016, People’s Republic of ChinaSchool of Mechanical Engineering, Qinghai University , Xining, 810016, People’s Republic of ChinaSchool of Mechanical Engineering, Qinghai University , Xining, 810016, People’s Republic of ChinaSchool of Materials Science, Beijing Institute of Technology , Beijing, 100081, People’s Republic of ChinaSchool of Materials Science and Engineering, Xi’an University of Technology , Xi’an, 710048, People’s Republic of ChinaZK60 magnesium alloy was prepared by the hot-pressed sintering combined with the hot-extruded technique. The microstructure and mechanical properties evolution of ZK60 alloy with a reduced extrusion temperature from 350 °C to 250 °C were investigated in detailed. The extruded alloy was mainly composed of fine α -Mg grains and MgZn _2 phase. The grains size gradually decreased with a reduction in extrusion temperature, and the yield strength obviously increased accordingly. The alloy extruded at 250 °C exhibited the smallest average grain size of 2.5 μ m and the best combination of strength and plasticity, with a yield strength of 279 MPa and fracture strain of 18.1% in compressive condition, and 263 MPa and 13.7% in tensile condition, as well as a tension-compression yield asymmetry of 0.94. Both the fine grains formed by the continuous and twin induced dynamic crystallization mechanism and the precipitation strengthening contributed to the strength improvement.https://doi.org/10.1088/2053-1591/ad125emagnesium alloyhot-extrudedmicrostructuremechanical propertiesstrengthening mechanism |
| spellingShingle | Luosheng Ma Lili Ma Ming Chen Jilan Zhou Xinya Feng Lei Jia Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy Materials Research Express magnesium alloy hot-extruded microstructure mechanical properties strengthening mechanism |
| title | Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy |
| title_full | Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy |
| title_fullStr | Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy |
| title_full_unstemmed | Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy |
| title_short | Effect of extrusion temperature on the microstructure and mechanical properties of hot-extruded ZK60 magnesium alloy |
| title_sort | effect of extrusion temperature on the microstructure and mechanical properties of hot extruded zk60 magnesium alloy |
| topic | magnesium alloy hot-extruded microstructure mechanical properties strengthening mechanism |
| url | https://doi.org/10.1088/2053-1591/ad125e |
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