Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloys
Abstract This study investigates the influence mechanisms of temperature on the tensile properties of Mg-Zn-Ca alloys, with a focus on the activation differences of slip systems at room temperature (RT) and high temperature (HT), and their effects on work hardening behavior. Observations using elect...
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Nature Portfolio
2025-05-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-025-01805-6 |
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| author | Yang Yu Yuhao Wei Yaoyao Song Haoge Shou Liuyong He |
| author_facet | Yang Yu Yuhao Wei Yaoyao Song Haoge Shou Liuyong He |
| author_sort | Yang Yu |
| collection | DOAJ |
| description | Abstract This study investigates the influence mechanisms of temperature on the tensile properties of Mg-Zn-Ca alloys, with a focus on the activation differences of slip systems at room temperature (RT) and high temperature (HT), and their effects on work hardening behavior. Observations using electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) reveal that Mg-Zn-Ca alloy deformation predominantly relies on basal slip and partial pyramidal slip at RT. The decomposition of pyramidal <c + a> into basal <c + a> dislocations enhance dislocation interactions, which increases the work hardening rate and tensile strength. In contrast, more non-basal and multi-slip systems are activated at HT, reducing dislocation interactions and leading to a decrease in the work hardening rate. The HT samples exhibit lower tensile strength but higher elongation. This study reveals the regulatory mechanism of pyramidal <c + a> dislocation slip decomposition and dislocation interactions at different temperatures, providing a theoretical foundation for designing high-strength, high-ductility magnesium alloys. |
| format | Article |
| id | doaj-art-bd8d9d2de6024b14bb2b5425e02502b0 |
| institution | OA Journals |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-bd8d9d2de6024b14bb2b5425e02502b02025-08-20T02:34:14ZengNature PortfolioScientific Reports2045-23222025-05-0115111210.1038/s41598-025-01805-6Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloysYang Yu0Yuhao Wei1Yaoyao Song2Haoge Shou3Liuyong He4Center for Engineering and Technology, Huanghuai UniversitySchool of Computer Science, University of SydneyLogistics Service Center, Huanghuai UniversityCollege of Intelligent Manufacturing, Huanghuai UniversityCollege of Materials Science and Engineering, Chongqing UniversityAbstract This study investigates the influence mechanisms of temperature on the tensile properties of Mg-Zn-Ca alloys, with a focus on the activation differences of slip systems at room temperature (RT) and high temperature (HT), and their effects on work hardening behavior. Observations using electron backscatter diffraction (EBSD) and transmission electron microscopy (TEM) reveal that Mg-Zn-Ca alloy deformation predominantly relies on basal slip and partial pyramidal slip at RT. The decomposition of pyramidal <c + a> into basal <c + a> dislocations enhance dislocation interactions, which increases the work hardening rate and tensile strength. In contrast, more non-basal and multi-slip systems are activated at HT, reducing dislocation interactions and leading to a decrease in the work hardening rate. The HT samples exhibit lower tensile strength but higher elongation. This study reveals the regulatory mechanism of pyramidal <c + a> dislocation slip decomposition and dislocation interactions at different temperatures, providing a theoretical foundation for designing high-strength, high-ductility magnesium alloys.https://doi.org/10.1038/s41598-025-01805-6Mg-Zn-Ca alloyTemperature dependenceSlip systemDislocation decompositionWork hardening |
| spellingShingle | Yang Yu Yuhao Wei Yaoyao Song Haoge Shou Liuyong He Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloys Scientific Reports Mg-Zn-Ca alloy Temperature dependence Slip system Dislocation decomposition Work hardening |
| title | Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloys |
| title_full | Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloys |
| title_fullStr | Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloys |
| title_full_unstemmed | Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloys |
| title_short | Mechanisms of temperature effects on the tensile properties and dislocation behavior of Mg-Zn-Ca alloys |
| title_sort | mechanisms of temperature effects on the tensile properties and dislocation behavior of mg zn ca alloys |
| topic | Mg-Zn-Ca alloy Temperature dependence Slip system Dislocation decomposition Work hardening |
| url | https://doi.org/10.1038/s41598-025-01805-6 |
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