Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy
The effects of 2% Ca addition on the microstructure and the mechanical properties of the asymmetric double-sided friction stir welded magnesium alloy AZ61 were investigated. Compared to the Ca-free AZ61magnesium alloy, the addition of 2% Ca significantly refines the grains in the stir zone after wel...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
KeAi Communications Co., Ltd.
2020-03-01
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| Series: | Journal of Magnesium and Alloys |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956720300189 |
| _version_ | 1797203392307658752 |
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| author | Mengran Zhou Yoshiaki Morisada Hidetoshi Fujii |
| author_facet | Mengran Zhou Yoshiaki Morisada Hidetoshi Fujii |
| author_sort | Mengran Zhou |
| collection | DOAJ |
| description | The effects of 2% Ca addition on the microstructure and the mechanical properties of the asymmetric double-sided friction stir welded magnesium alloy AZ61 were investigated. Compared to the Ca-free AZ61magnesium alloy, the addition of 2% Ca significantly refines the grains in the stir zone after welding. Due to the existence of thermally stable Al2Ca particles, there is no noticeable change in the grain size in the stir zone regardless of the welding heat input. The electron backscattered diffraction analysis at the center of the stir zone confirmed the significant deterioration of the (0001) texture strength from the addition of 2% Ca. The tensile test of the joint suggested that the addition of 2% Ca provides stable tensile properties to the joint regardless of the welding parameters. The critical (0001) texture strength that determines the ultimate tensile strength decreased from 20 to 15 by the Ca addition. The addition of Ca enhanced the deterioration of the plastic elongation when the (0001) texture strength increased. Keywords: Mg alloy, Friction stir welding, Microstructure, Mechanical properties, Texture |
| first_indexed | 2024-04-24T08:18:36Z |
| format | Article |
| id | doaj.art-cf5e6001cfbc4541b068d02ebeb29129 |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T08:18:36Z |
| publishDate | 2020-03-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-cf5e6001cfbc4541b068d02ebeb291292024-04-17T02:44:37ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672020-03-018191102Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloyMengran Zhou0Yoshiaki Morisada1Hidetoshi Fujii2Joining and Welding Research Institute (JWRI), Osaka University, JapanJoining and Welding Research Institute (JWRI), Osaka University, JapanCorresponding author.; Joining and Welding Research Institute (JWRI), Osaka University, JapanThe effects of 2% Ca addition on the microstructure and the mechanical properties of the asymmetric double-sided friction stir welded magnesium alloy AZ61 were investigated. Compared to the Ca-free AZ61magnesium alloy, the addition of 2% Ca significantly refines the grains in the stir zone after welding. Due to the existence of thermally stable Al2Ca particles, there is no noticeable change in the grain size in the stir zone regardless of the welding heat input. The electron backscattered diffraction analysis at the center of the stir zone confirmed the significant deterioration of the (0001) texture strength from the addition of 2% Ca. The tensile test of the joint suggested that the addition of 2% Ca provides stable tensile properties to the joint regardless of the welding parameters. The critical (0001) texture strength that determines the ultimate tensile strength decreased from 20 to 15 by the Ca addition. The addition of Ca enhanced the deterioration of the plastic elongation when the (0001) texture strength increased. Keywords: Mg alloy, Friction stir welding, Microstructure, Mechanical properties, Texturehttp://www.sciencedirect.com/science/article/pii/S2213956720300189 |
| spellingShingle | Mengran Zhou Yoshiaki Morisada Hidetoshi Fujii Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy Journal of Magnesium and Alloys |
| title | Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy |
| title_full | Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy |
| title_fullStr | Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy |
| title_full_unstemmed | Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy |
| title_short | Effect of Ca addition on the microstructure and the mechanical properties of asymmetric double-sided friction stir welded AZ61 magnesium alloy |
| title_sort | effect of ca addition on the microstructure and the mechanical properties of asymmetric double sided friction stir welded az61 magnesium alloy |
| url | http://www.sciencedirect.com/science/article/pii/S2213956720300189 |
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